ceph: on-wire types
These headers describe the types used to exchange messages between the Ceph client and various servers. All types are little-endian and packed. These headers are shared between the kernel and userspace, so all types are in terms of e.g. __u32. Additionally, we define a few magic values to identify the current version of the protocol(s) in use, so that discrepancies to be detected on mount. Signed-off-by: Sage Weil <sage@newdream.net>
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Sage Weil
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5 changed files with 1401 additions and 0 deletions
80
fs/ceph/ceph_fs.c
Normal file
80
fs/ceph/ceph_fs.c
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/*
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* Some non-inline ceph helpers
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*/
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#include "types.h"
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int ceph_flags_to_mode(int flags)
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{
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#ifdef O_DIRECTORY /* fixme */
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if ((flags & O_DIRECTORY) == O_DIRECTORY)
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return CEPH_FILE_MODE_PIN;
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#endif
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#ifdef O_LAZY
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if (flags & O_LAZY)
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return CEPH_FILE_MODE_LAZY;
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#endif
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if ((flags & O_APPEND) == O_APPEND)
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flags |= O_WRONLY;
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flags &= O_ACCMODE;
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if ((flags & O_RDWR) == O_RDWR)
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return CEPH_FILE_MODE_RDWR;
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if ((flags & O_WRONLY) == O_WRONLY)
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return CEPH_FILE_MODE_WR;
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return CEPH_FILE_MODE_RD;
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}
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int ceph_caps_for_mode(int mode)
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{
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switch (mode) {
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case CEPH_FILE_MODE_PIN:
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return CEPH_CAP_PIN;
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case CEPH_FILE_MODE_RD:
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return CEPH_CAP_PIN | CEPH_CAP_FILE_SHARED |
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CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE;
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case CEPH_FILE_MODE_RDWR:
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return CEPH_CAP_PIN | CEPH_CAP_FILE_SHARED |
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CEPH_CAP_FILE_EXCL |
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CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE |
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CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER |
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CEPH_CAP_AUTH_SHARED | CEPH_CAP_AUTH_EXCL |
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CEPH_CAP_XATTR_SHARED | CEPH_CAP_XATTR_EXCL;
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case CEPH_FILE_MODE_WR:
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return CEPH_CAP_PIN | CEPH_CAP_FILE_SHARED |
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CEPH_CAP_FILE_EXCL |
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CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER |
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CEPH_CAP_AUTH_SHARED | CEPH_CAP_AUTH_EXCL |
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CEPH_CAP_XATTR_SHARED | CEPH_CAP_XATTR_EXCL;
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}
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return 0;
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}
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/* Name hashing routines. Initial hash value */
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/* Hash courtesy of the R5 hash in reiserfs modulo sign bits */
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#define ceph_init_name_hash() 0
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/* partial hash update function. Assume roughly 4 bits per character */
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static unsigned long ceph_partial_name_hash(unsigned long c,
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unsigned long prevhash)
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{
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return (prevhash + (c << 4) + (c >> 4)) * 11;
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}
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/*
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* Finally: cut down the number of bits to a int value (and try to avoid
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* losing bits)
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*/
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static unsigned long ceph_end_name_hash(unsigned long hash)
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{
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return hash & 0xffffffff;
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}
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/* Compute the hash for a name string. */
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unsigned int ceph_full_name_hash(const char *name, unsigned int len)
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{
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unsigned long hash = ceph_init_name_hash();
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while (len--)
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hash = ceph_partial_name_hash(*name++, hash);
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return ceph_end_name_hash(hash);
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}
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629
fs/ceph/ceph_fs.h
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629
fs/ceph/ceph_fs.h
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/*
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* ceph_fs.h - Ceph constants and data types to share between kernel and
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* user space.
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*
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* Most types in this file are defined as little-endian, and are
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* primarily intended to describe data structures that pass over the
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* wire or that are stored on disk.
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*
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* LGPL2
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*/
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#ifndef _FS_CEPH_CEPH_FS_H
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#define _FS_CEPH_CEPH_FS_H
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#include "msgr.h"
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#include "rados.h"
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/*
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* Ceph release version
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*/
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#define CEPH_VERSION_MAJOR 0
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#define CEPH_VERSION_MINOR 16
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#define CEPH_VERSION_PATCH 1
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#define _CEPH_STRINGIFY(x) #x
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#define CEPH_STRINGIFY(x) _CEPH_STRINGIFY(x)
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#define CEPH_MAKE_VERSION(x, y, z) CEPH_STRINGIFY(x) "." CEPH_STRINGIFY(y) \
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"." CEPH_STRINGIFY(z)
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#define CEPH_VERSION CEPH_MAKE_VERSION(CEPH_VERSION_MAJOR, \
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CEPH_VERSION_MINOR, CEPH_VERSION_PATCH)
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/*
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* subprotocol versions. when specific messages types or high-level
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* protocols change, bump the affected components. we keep rev
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* internal cluster protocols separately from the public,
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* client-facing protocol.
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*/
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#define CEPH_OSD_PROTOCOL 7 /* cluster internal */
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#define CEPH_MDS_PROTOCOL 9 /* cluster internal */
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#define CEPH_MON_PROTOCOL 4 /* cluster internal */
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#define CEPH_OSDC_PROTOCOL 20 /* server/client */
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#define CEPH_MDSC_PROTOCOL 29 /* server/client */
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#define CEPH_MONC_PROTOCOL 14 /* server/client */
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#define CEPH_INO_ROOT 1
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/* arbitrary limit on max # of monitors (cluster of 3 is typical) */
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#define CEPH_MAX_MON 31
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unsigned int ceph_full_name_hash(const char *name, unsigned int len);
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/*
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* ceph_file_layout - describe data layout for a file/inode
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*/
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struct ceph_file_layout {
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/* file -> object mapping */
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__le32 fl_stripe_unit; /* stripe unit, in bytes. must be multiple
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of page size. */
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__le32 fl_stripe_count; /* over this many objects */
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__le32 fl_object_size; /* until objects are this big, then move to
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new objects */
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__le32 fl_cas_hash; /* 0 = none; 1 = sha256 */
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/* pg -> disk layout */
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__le32 fl_object_stripe_unit; /* for per-object parity, if any */
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/* object -> pg layout */
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__le32 fl_pg_preferred; /* preferred primary for pg (-1 for none) */
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__le32 fl_pg_pool; /* namespace, crush ruleset, rep level */
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} __attribute__ ((packed));
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/*********************************************
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* message layer
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*/
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/*
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* message types
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*/
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/* misc */
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#define CEPH_MSG_SHUTDOWN 1
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#define CEPH_MSG_PING 2
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/* client <-> monitor */
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#define CEPH_MSG_MON_MAP 4
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#define CEPH_MSG_MON_GET_MAP 5
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#define CEPH_MSG_CLIENT_MOUNT 10
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#define CEPH_MSG_CLIENT_MOUNT_ACK 11
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#define CEPH_MSG_STATFS 13
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#define CEPH_MSG_STATFS_REPLY 14
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#define CEPH_MSG_MON_SUBSCRIBE 15
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#define CEPH_MSG_MON_SUBSCRIBE_ACK 16
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/* client <-> mds */
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#define CEPH_MSG_MDS_GETMAP 20
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#define CEPH_MSG_MDS_MAP 21
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#define CEPH_MSG_CLIENT_SESSION 22
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#define CEPH_MSG_CLIENT_RECONNECT 23
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#define CEPH_MSG_CLIENT_REQUEST 24
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#define CEPH_MSG_CLIENT_REQUEST_FORWARD 25
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#define CEPH_MSG_CLIENT_REPLY 26
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#define CEPH_MSG_CLIENT_CAPS 0x310
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#define CEPH_MSG_CLIENT_LEASE 0x311
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#define CEPH_MSG_CLIENT_SNAP 0x312
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#define CEPH_MSG_CLIENT_CAPRELEASE 0x313
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/* osd */
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#define CEPH_MSG_OSD_GETMAP 40
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#define CEPH_MSG_OSD_MAP 41
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#define CEPH_MSG_OSD_OP 42
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#define CEPH_MSG_OSD_OPREPLY 43
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struct ceph_mon_statfs {
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__le64 have_version;
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struct ceph_fsid fsid;
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__le64 tid;
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} __attribute__ ((packed));
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struct ceph_statfs {
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__le64 kb, kb_used, kb_avail;
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__le64 num_objects;
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} __attribute__ ((packed));
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struct ceph_mon_statfs_reply {
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struct ceph_fsid fsid;
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__le64 tid;
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__le64 version;
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struct ceph_statfs st;
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} __attribute__ ((packed));
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struct ceph_osd_getmap {
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__le64 have_version;
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struct ceph_fsid fsid;
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__le32 start;
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} __attribute__ ((packed));
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struct ceph_mds_getmap {
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__le64 have_version;
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struct ceph_fsid fsid;
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} __attribute__ ((packed));
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struct ceph_client_mount {
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__le64 have_version;
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} __attribute__ ((packed));
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struct ceph_mon_subscribe_item {
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__le64 have;
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__u8 onetime;
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} __attribute__ ((packed));
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/*
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* mds states
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* > 0 -> in
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* <= 0 -> out
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*/
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#define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */
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#define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees.
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empty log. */
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#define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */
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#define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */
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#define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */
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#define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */
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#define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */
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#define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */
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#define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed
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operations (import, rename, etc.) */
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#define CEPH_MDS_STATE_RECONNECT 10 /* up, reconnect to clients */
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#define CEPH_MDS_STATE_REJOIN 11 /* up, rejoining distributed cache */
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#define CEPH_MDS_STATE_CLIENTREPLAY 12 /* up, replaying client operations */
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#define CEPH_MDS_STATE_ACTIVE 13 /* up, active */
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#define CEPH_MDS_STATE_STOPPING 14 /* up, but exporting metadata */
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extern const char *ceph_mds_state_name(int s);
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/*
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* metadata lock types.
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* - these are bitmasks.. we can compose them
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* - they also define the lock ordering by the MDS
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* - a few of these are internal to the mds
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*/
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#define CEPH_LOCK_DN 1
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#define CEPH_LOCK_ISNAP 2
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#define CEPH_LOCK_IVERSION 4 /* mds internal */
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#define CEPH_LOCK_IFILE 8 /* mds internal */
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#define CEPH_LOCK_IAUTH 32
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#define CEPH_LOCK_ILINK 64
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#define CEPH_LOCK_IDFT 128 /* dir frag tree */
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#define CEPH_LOCK_INEST 256 /* mds internal */
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#define CEPH_LOCK_IXATTR 512
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#define CEPH_LOCK_INO 2048 /* immutable inode bits; not a lock */
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/* client_session ops */
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enum {
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CEPH_SESSION_REQUEST_OPEN,
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CEPH_SESSION_OPEN,
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CEPH_SESSION_REQUEST_CLOSE,
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CEPH_SESSION_CLOSE,
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CEPH_SESSION_REQUEST_RENEWCAPS,
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CEPH_SESSION_RENEWCAPS,
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CEPH_SESSION_STALE,
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CEPH_SESSION_RECALL_STATE,
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};
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extern const char *ceph_session_op_name(int op);
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struct ceph_mds_session_head {
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__le32 op;
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__le64 seq;
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struct ceph_timespec stamp;
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__le32 max_caps, max_leases;
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} __attribute__ ((packed));
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/* client_request */
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/*
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* metadata ops.
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* & 0x001000 -> write op
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* & 0x010000 -> follow symlink (e.g. stat(), not lstat()).
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& & 0x100000 -> use weird ino/path trace
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*/
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#define CEPH_MDS_OP_WRITE 0x001000
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enum {
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CEPH_MDS_OP_LOOKUP = 0x00100,
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CEPH_MDS_OP_GETATTR = 0x00101,
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CEPH_MDS_OP_LOOKUPHASH = 0x00102,
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CEPH_MDS_OP_LOOKUPPARENT = 0x00103,
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CEPH_MDS_OP_SETXATTR = 0x01105,
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CEPH_MDS_OP_RMXATTR = 0x01106,
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CEPH_MDS_OP_SETLAYOUT = 0x01107,
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CEPH_MDS_OP_SETATTR = 0x01108,
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CEPH_MDS_OP_MKNOD = 0x01201,
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CEPH_MDS_OP_LINK = 0x01202,
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CEPH_MDS_OP_UNLINK = 0x01203,
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CEPH_MDS_OP_RENAME = 0x01204,
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CEPH_MDS_OP_MKDIR = 0x01220,
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CEPH_MDS_OP_RMDIR = 0x01221,
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CEPH_MDS_OP_SYMLINK = 0x01222,
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CEPH_MDS_OP_CREATE = 0x00301,
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CEPH_MDS_OP_OPEN = 0x00302,
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CEPH_MDS_OP_READDIR = 0x00305,
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CEPH_MDS_OP_LOOKUPSNAP = 0x00400,
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CEPH_MDS_OP_MKSNAP = 0x01400,
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CEPH_MDS_OP_RMSNAP = 0x01401,
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CEPH_MDS_OP_LSSNAP = 0x00402,
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};
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extern const char *ceph_mds_op_name(int op);
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#define CEPH_SETATTR_MODE 1
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#define CEPH_SETATTR_UID 2
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#define CEPH_SETATTR_GID 4
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#define CEPH_SETATTR_MTIME 8
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#define CEPH_SETATTR_ATIME 16
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#define CEPH_SETATTR_SIZE 32
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#define CEPH_SETATTR_CTIME 64
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union ceph_mds_request_args {
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struct {
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__le32 mask; /* CEPH_CAP_* */
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} __attribute__ ((packed)) getattr;
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struct {
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__le32 mode;
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__le32 uid;
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__le32 gid;
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struct ceph_timespec mtime;
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struct ceph_timespec atime;
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__le64 size, old_size; /* old_size needed by truncate */
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__le32 mask; /* CEPH_SETATTR_* */
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} __attribute__ ((packed)) setattr;
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struct {
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__le32 frag; /* which dir fragment */
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__le32 max_entries; /* how many dentries to grab */
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} __attribute__ ((packed)) readdir;
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struct {
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__le32 mode;
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__le32 rdev;
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} __attribute__ ((packed)) mknod;
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struct {
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__le32 mode;
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} __attribute__ ((packed)) mkdir;
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struct {
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__le32 flags;
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__le32 mode;
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__le32 stripe_unit; /* layout for newly created file */
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__le32 stripe_count; /* ... */
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__le32 object_size;
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__le32 file_replication;
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__le32 preferred;
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} __attribute__ ((packed)) open;
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struct {
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__le32 flags;
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} __attribute__ ((packed)) setxattr;
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struct {
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struct ceph_file_layout layout;
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} __attribute__ ((packed)) setlayout;
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} __attribute__ ((packed));
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#define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */
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#define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */
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struct ceph_mds_request_head {
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__le64 tid, oldest_client_tid;
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__le32 mdsmap_epoch; /* on client */
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__le32 flags; /* CEPH_MDS_FLAG_* */
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__u8 num_retry, num_fwd; /* count retry, fwd attempts */
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__le16 num_releases; /* # include cap/lease release records */
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__le32 op; /* mds op code */
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__le32 caller_uid, caller_gid;
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__le64 ino; /* use this ino for openc, mkdir, mknod,
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etc. (if replaying) */
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union ceph_mds_request_args args;
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} __attribute__ ((packed));
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/* cap/lease release record */
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struct ceph_mds_request_release {
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__le64 ino, cap_id; /* ino and unique cap id */
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__le32 caps, wanted; /* new issued, wanted */
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__le32 seq, issue_seq, mseq;
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__le32 dname_seq; /* if releasing a dentry lease, a */
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__le32 dname_len; /* string follows. */
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} __attribute__ ((packed));
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/* client reply */
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struct ceph_mds_reply_head {
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__le64 tid;
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__le32 op;
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__le32 result;
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__le32 mdsmap_epoch;
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__u8 safe; /* true if committed to disk */
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__u8 is_dentry, is_target; /* true if dentry, target inode records
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are included with reply */
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} __attribute__ ((packed));
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/* one for each node split */
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struct ceph_frag_tree_split {
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__le32 frag; /* this frag splits... */
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__le32 by; /* ...by this many bits */
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} __attribute__ ((packed));
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struct ceph_frag_tree_head {
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__le32 nsplits; /* num ceph_frag_tree_split records */
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struct ceph_frag_tree_split splits[];
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} __attribute__ ((packed));
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/* capability issue, for bundling with mds reply */
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struct ceph_mds_reply_cap {
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__le32 caps, wanted; /* caps issued, wanted */
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__le64 cap_id;
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__le32 seq, mseq;
|
||||
__le64 realm; /* snap realm */
|
||||
__u8 flags; /* CEPH_CAP_FLAG_* */
|
||||
} __attribute__ ((packed));
|
||||
|
||||
#define CEPH_CAP_FLAG_AUTH 1 /* cap is issued by auth mds */
|
||||
|
||||
/* inode record, for bundling with mds reply */
|
||||
struct ceph_mds_reply_inode {
|
||||
__le64 ino;
|
||||
__le64 snapid;
|
||||
__le32 rdev;
|
||||
__le64 version; /* inode version */
|
||||
__le64 xattr_version; /* version for xattr blob */
|
||||
struct ceph_mds_reply_cap cap; /* caps issued for this inode */
|
||||
struct ceph_file_layout layout;
|
||||
struct ceph_timespec ctime, mtime, atime;
|
||||
__le32 time_warp_seq;
|
||||
__le64 size, max_size, truncate_size;
|
||||
__le32 truncate_seq;
|
||||
__le32 mode, uid, gid;
|
||||
__le32 nlink;
|
||||
__le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */
|
||||
struct ceph_timespec rctime;
|
||||
struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */
|
||||
} __attribute__ ((packed));
|
||||
/* followed by frag array, then symlink string, then xattr blob */
|
||||
|
||||
/* reply_lease follows dname, and reply_inode */
|
||||
struct ceph_mds_reply_lease {
|
||||
__le16 mask; /* lease type(s) */
|
||||
__le32 duration_ms; /* lease duration */
|
||||
__le32 seq;
|
||||
} __attribute__ ((packed));
|
||||
|
||||
struct ceph_mds_reply_dirfrag {
|
||||
__le32 frag; /* fragment */
|
||||
__le32 auth; /* auth mds, if this is a delegation point */
|
||||
__le32 ndist; /* number of mds' this is replicated on */
|
||||
__le32 dist[];
|
||||
} __attribute__ ((packed));
|
||||
|
||||
/* file access modes */
|
||||
#define CEPH_FILE_MODE_PIN 0
|
||||
#define CEPH_FILE_MODE_RD 1
|
||||
#define CEPH_FILE_MODE_WR 2
|
||||
#define CEPH_FILE_MODE_RDWR 3 /* RD | WR */
|
||||
#define CEPH_FILE_MODE_LAZY 4 /* lazy io */
|
||||
#define CEPH_FILE_MODE_NUM 8 /* bc these are bit fields.. mostly */
|
||||
|
||||
int ceph_flags_to_mode(int flags);
|
||||
|
||||
|
||||
/* capability bits */
|
||||
#define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */
|
||||
|
||||
/* generic cap bits */
|
||||
#define CEPH_CAP_GSHARED 1 /* client can reads */
|
||||
#define CEPH_CAP_GEXCL 2 /* client can read and update */
|
||||
#define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */
|
||||
#define CEPH_CAP_GRD 8 /* (file) client can read */
|
||||
#define CEPH_CAP_GWR 16 /* (file) client can write */
|
||||
#define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */
|
||||
#define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */
|
||||
#define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */
|
||||
|
||||
/* per-lock shift */
|
||||
#define CEPH_CAP_SAUTH 2
|
||||
#define CEPH_CAP_SLINK 4
|
||||
#define CEPH_CAP_SXATTR 6
|
||||
#define CEPH_CAP_SFILE 8 /* goes at the end (uses >2 cap bits) */
|
||||
|
||||
#define CEPH_CAP_BITS 16
|
||||
|
||||
/* composed values */
|
||||
#define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH)
|
||||
#define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH)
|
||||
#define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK)
|
||||
#define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK)
|
||||
#define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR)
|
||||
#define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR)
|
||||
#define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE)
|
||||
#define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE)
|
||||
#define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE)
|
||||
#define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE)
|
||||
#define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE)
|
||||
#define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE)
|
||||
#define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE)
|
||||
#define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE)
|
||||
#define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE)
|
||||
|
||||
/* cap masks (for getattr) */
|
||||
#define CEPH_STAT_CAP_INODE CEPH_CAP_PIN
|
||||
#define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */
|
||||
#define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN
|
||||
#define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED
|
||||
#define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED
|
||||
#define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED
|
||||
#define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED
|
||||
#define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED
|
||||
#define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED
|
||||
#define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED
|
||||
#define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */
|
||||
#define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED
|
||||
#define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \
|
||||
CEPH_CAP_AUTH_SHARED | \
|
||||
CEPH_CAP_LINK_SHARED | \
|
||||
CEPH_CAP_FILE_SHARED | \
|
||||
CEPH_CAP_XATTR_SHARED)
|
||||
|
||||
#define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \
|
||||
CEPH_CAP_LINK_SHARED | \
|
||||
CEPH_CAP_XATTR_SHARED | \
|
||||
CEPH_CAP_FILE_SHARED)
|
||||
#define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \
|
||||
CEPH_CAP_FILE_CACHE)
|
||||
|
||||
#define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \
|
||||
CEPH_CAP_LINK_EXCL | \
|
||||
CEPH_CAP_XATTR_EXCL | \
|
||||
CEPH_CAP_FILE_EXCL)
|
||||
#define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \
|
||||
CEPH_CAP_FILE_EXCL)
|
||||
#define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR)
|
||||
#define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \
|
||||
CEPH_CAP_ANY_FILE_WR | CEPH_CAP_PIN)
|
||||
|
||||
#define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \
|
||||
CEPH_LOCK_IXATTR)
|
||||
|
||||
int ceph_caps_for_mode(int mode);
|
||||
|
||||
enum {
|
||||
CEPH_CAP_OP_GRANT, /* mds->client grant */
|
||||
CEPH_CAP_OP_REVOKE, /* mds->client revoke */
|
||||
CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */
|
||||
CEPH_CAP_OP_EXPORT, /* mds has exported the cap */
|
||||
CEPH_CAP_OP_IMPORT, /* mds has imported the cap */
|
||||
CEPH_CAP_OP_UPDATE, /* client->mds update */
|
||||
CEPH_CAP_OP_DROP, /* client->mds drop cap bits */
|
||||
CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */
|
||||
CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */
|
||||
CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */
|
||||
CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */
|
||||
CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */
|
||||
CEPH_CAP_OP_RENEW, /* client->mds renewal request */
|
||||
};
|
||||
|
||||
extern const char *ceph_cap_op_name(int op);
|
||||
|
||||
/*
|
||||
* caps message, used for capability callbacks, acks, requests, etc.
|
||||
*/
|
||||
struct ceph_mds_caps {
|
||||
__le32 op; /* CEPH_CAP_OP_* */
|
||||
__le64 ino, realm;
|
||||
__le64 cap_id;
|
||||
__le32 seq, issue_seq;
|
||||
__le32 caps, wanted, dirty; /* latest issued/wanted/dirty */
|
||||
__le32 migrate_seq;
|
||||
__le64 snap_follows;
|
||||
__le32 snap_trace_len;
|
||||
__le64 client_tid; /* for FLUSH(SNAP) -> FLUSH(SNAP)_ACK */
|
||||
|
||||
/* authlock */
|
||||
__le32 uid, gid, mode;
|
||||
|
||||
/* linklock */
|
||||
__le32 nlink;
|
||||
|
||||
/* xattrlock */
|
||||
__le32 xattr_len;
|
||||
__le64 xattr_version;
|
||||
|
||||
/* filelock */
|
||||
__le64 size, max_size, truncate_size;
|
||||
__le32 truncate_seq;
|
||||
struct ceph_timespec mtime, atime, ctime;
|
||||
struct ceph_file_layout layout;
|
||||
__le32 time_warp_seq;
|
||||
} __attribute__ ((packed));
|
||||
|
||||
/* cap release msg head */
|
||||
struct ceph_mds_cap_release {
|
||||
__le32 num; /* number of cap_items that follow */
|
||||
} __attribute__ ((packed));
|
||||
|
||||
struct ceph_mds_cap_item {
|
||||
__le64 ino;
|
||||
__le64 cap_id;
|
||||
__le32 migrate_seq, seq;
|
||||
} __attribute__ ((packed));
|
||||
|
||||
#define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */
|
||||
#define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */
|
||||
#define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */
|
||||
#define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */
|
||||
|
||||
extern const char *ceph_lease_op_name(int o);
|
||||
|
||||
/* lease msg header */
|
||||
struct ceph_mds_lease {
|
||||
__u8 action; /* CEPH_MDS_LEASE_* */
|
||||
__le16 mask; /* which lease */
|
||||
__le64 ino;
|
||||
__le64 first, last; /* snap range */
|
||||
__le32 seq;
|
||||
__le32 duration_ms; /* duration of renewal */
|
||||
} __attribute__ ((packed));
|
||||
/* followed by a __le32+string for dname */
|
||||
|
||||
/* client reconnect */
|
||||
struct ceph_mds_cap_reconnect {
|
||||
__le64 cap_id;
|
||||
__le32 wanted;
|
||||
__le32 issued;
|
||||
__le64 size;
|
||||
struct ceph_timespec mtime, atime;
|
||||
__le64 snaprealm;
|
||||
__le64 pathbase; /* base ino for our path to this ino */
|
||||
} __attribute__ ((packed));
|
||||
/* followed by encoded string */
|
||||
|
||||
struct ceph_mds_snaprealm_reconnect {
|
||||
__le64 ino; /* snap realm base */
|
||||
__le64 seq; /* snap seq for this snap realm */
|
||||
__le64 parent; /* parent realm */
|
||||
} __attribute__ ((packed));
|
||||
|
||||
/*
|
||||
* snaps
|
||||
*/
|
||||
enum {
|
||||
CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */
|
||||
CEPH_SNAP_OP_CREATE,
|
||||
CEPH_SNAP_OP_DESTROY,
|
||||
CEPH_SNAP_OP_SPLIT,
|
||||
};
|
||||
|
||||
extern const char *ceph_snap_op_name(int o);
|
||||
|
||||
/* snap msg header */
|
||||
struct ceph_mds_snap_head {
|
||||
__le32 op; /* CEPH_SNAP_OP_* */
|
||||
__le64 split; /* ino to split off, if any */
|
||||
__le32 num_split_inos; /* # inos belonging to new child realm */
|
||||
__le32 num_split_realms; /* # child realms udner new child realm */
|
||||
__le32 trace_len; /* size of snap trace blob */
|
||||
} __attribute__ ((packed));
|
||||
/* followed by split ino list, then split realms, then the trace blob */
|
||||
|
||||
/*
|
||||
* encode info about a snaprealm, as viewed by a client
|
||||
*/
|
||||
struct ceph_mds_snap_realm {
|
||||
__le64 ino; /* ino */
|
||||
__le64 created; /* snap: when created */
|
||||
__le64 parent; /* ino: parent realm */
|
||||
__le64 parent_since; /* snap: same parent since */
|
||||
__le64 seq; /* snap: version */
|
||||
__le32 num_snaps;
|
||||
__le32 num_prior_parent_snaps;
|
||||
} __attribute__ ((packed));
|
||||
/* followed by my snap list, then prior parent snap list */
|
||||
|
||||
#endif
|
||||
163
fs/ceph/ceph_strings.c
Normal file
163
fs/ceph/ceph_strings.c
Normal file
|
|
@ -0,0 +1,163 @@
|
|||
/*
|
||||
* Ceph string constants
|
||||
*/
|
||||
#include "types.h"
|
||||
|
||||
const char *ceph_osd_op_name(int op)
|
||||
{
|
||||
switch (op) {
|
||||
case CEPH_OSD_OP_READ: return "read";
|
||||
case CEPH_OSD_OP_STAT: return "stat";
|
||||
|
||||
case CEPH_OSD_OP_MASKTRUNC: return "masktrunc";
|
||||
|
||||
case CEPH_OSD_OP_WRITE: return "write";
|
||||
case CEPH_OSD_OP_DELETE: return "delete";
|
||||
case CEPH_OSD_OP_TRUNCATE: return "truncate";
|
||||
case CEPH_OSD_OP_ZERO: return "zero";
|
||||
case CEPH_OSD_OP_WRITEFULL: return "writefull";
|
||||
|
||||
case CEPH_OSD_OP_APPEND: return "append";
|
||||
case CEPH_OSD_OP_STARTSYNC: return "startsync";
|
||||
case CEPH_OSD_OP_SETTRUNC: return "settrunc";
|
||||
case CEPH_OSD_OP_TRIMTRUNC: return "trimtrunc";
|
||||
|
||||
case CEPH_OSD_OP_TMAPUP: return "tmapup";
|
||||
case CEPH_OSD_OP_TMAPGET: return "tmapget";
|
||||
case CEPH_OSD_OP_TMAPPUT: return "tmapput";
|
||||
|
||||
case CEPH_OSD_OP_GETXATTR: return "getxattr";
|
||||
case CEPH_OSD_OP_GETXATTRS: return "getxattrs";
|
||||
case CEPH_OSD_OP_SETXATTR: return "setxattr";
|
||||
case CEPH_OSD_OP_SETXATTRS: return "setxattrs";
|
||||
case CEPH_OSD_OP_RESETXATTRS: return "resetxattrs";
|
||||
case CEPH_OSD_OP_RMXATTR: return "rmxattr";
|
||||
|
||||
case CEPH_OSD_OP_PULL: return "pull";
|
||||
case CEPH_OSD_OP_PUSH: return "push";
|
||||
case CEPH_OSD_OP_BALANCEREADS: return "balance-reads";
|
||||
case CEPH_OSD_OP_UNBALANCEREADS: return "unbalance-reads";
|
||||
case CEPH_OSD_OP_SCRUB: return "scrub";
|
||||
|
||||
case CEPH_OSD_OP_WRLOCK: return "wrlock";
|
||||
case CEPH_OSD_OP_WRUNLOCK: return "wrunlock";
|
||||
case CEPH_OSD_OP_RDLOCK: return "rdlock";
|
||||
case CEPH_OSD_OP_RDUNLOCK: return "rdunlock";
|
||||
case CEPH_OSD_OP_UPLOCK: return "uplock";
|
||||
case CEPH_OSD_OP_DNLOCK: return "dnlock";
|
||||
|
||||
case CEPH_OSD_OP_CALL: return "call";
|
||||
|
||||
case CEPH_OSD_OP_PGLS: return "pgls";
|
||||
}
|
||||
return "???";
|
||||
}
|
||||
|
||||
const char *ceph_mds_state_name(int s)
|
||||
{
|
||||
switch (s) {
|
||||
/* down and out */
|
||||
case CEPH_MDS_STATE_DNE: return "down:dne";
|
||||
case CEPH_MDS_STATE_STOPPED: return "down:stopped";
|
||||
/* up and out */
|
||||
case CEPH_MDS_STATE_BOOT: return "up:boot";
|
||||
case CEPH_MDS_STATE_STANDBY: return "up:standby";
|
||||
case CEPH_MDS_STATE_STANDBY_REPLAY: return "up:standby-replay";
|
||||
case CEPH_MDS_STATE_CREATING: return "up:creating";
|
||||
case CEPH_MDS_STATE_STARTING: return "up:starting";
|
||||
/* up and in */
|
||||
case CEPH_MDS_STATE_REPLAY: return "up:replay";
|
||||
case CEPH_MDS_STATE_RESOLVE: return "up:resolve";
|
||||
case CEPH_MDS_STATE_RECONNECT: return "up:reconnect";
|
||||
case CEPH_MDS_STATE_REJOIN: return "up:rejoin";
|
||||
case CEPH_MDS_STATE_CLIENTREPLAY: return "up:clientreplay";
|
||||
case CEPH_MDS_STATE_ACTIVE: return "up:active";
|
||||
case CEPH_MDS_STATE_STOPPING: return "up:stopping";
|
||||
}
|
||||
return "???";
|
||||
}
|
||||
|
||||
const char *ceph_session_op_name(int op)
|
||||
{
|
||||
switch (op) {
|
||||
case CEPH_SESSION_REQUEST_OPEN: return "request_open";
|
||||
case CEPH_SESSION_OPEN: return "open";
|
||||
case CEPH_SESSION_REQUEST_CLOSE: return "request_close";
|
||||
case CEPH_SESSION_CLOSE: return "close";
|
||||
case CEPH_SESSION_REQUEST_RENEWCAPS: return "request_renewcaps";
|
||||
case CEPH_SESSION_RENEWCAPS: return "renewcaps";
|
||||
case CEPH_SESSION_STALE: return "stale";
|
||||
case CEPH_SESSION_RECALL_STATE: return "recall_state";
|
||||
}
|
||||
return "???";
|
||||
}
|
||||
|
||||
const char *ceph_mds_op_name(int op)
|
||||
{
|
||||
switch (op) {
|
||||
case CEPH_MDS_OP_LOOKUP: return "lookup";
|
||||
case CEPH_MDS_OP_LOOKUPHASH: return "lookuphash";
|
||||
case CEPH_MDS_OP_LOOKUPPARENT: return "lookupparent";
|
||||
case CEPH_MDS_OP_GETATTR: return "getattr";
|
||||
case CEPH_MDS_OP_SETXATTR: return "setxattr";
|
||||
case CEPH_MDS_OP_SETATTR: return "setattr";
|
||||
case CEPH_MDS_OP_RMXATTR: return "rmxattr";
|
||||
case CEPH_MDS_OP_READDIR: return "readdir";
|
||||
case CEPH_MDS_OP_MKNOD: return "mknod";
|
||||
case CEPH_MDS_OP_LINK: return "link";
|
||||
case CEPH_MDS_OP_UNLINK: return "unlink";
|
||||
case CEPH_MDS_OP_RENAME: return "rename";
|
||||
case CEPH_MDS_OP_MKDIR: return "mkdir";
|
||||
case CEPH_MDS_OP_RMDIR: return "rmdir";
|
||||
case CEPH_MDS_OP_SYMLINK: return "symlink";
|
||||
case CEPH_MDS_OP_CREATE: return "create";
|
||||
case CEPH_MDS_OP_OPEN: return "open";
|
||||
case CEPH_MDS_OP_LOOKUPSNAP: return "lookupsnap";
|
||||
case CEPH_MDS_OP_LSSNAP: return "lssnap";
|
||||
case CEPH_MDS_OP_MKSNAP: return "mksnap";
|
||||
case CEPH_MDS_OP_RMSNAP: return "rmsnap";
|
||||
}
|
||||
return "???";
|
||||
}
|
||||
|
||||
const char *ceph_cap_op_name(int op)
|
||||
{
|
||||
switch (op) {
|
||||
case CEPH_CAP_OP_GRANT: return "grant";
|
||||
case CEPH_CAP_OP_REVOKE: return "revoke";
|
||||
case CEPH_CAP_OP_TRUNC: return "trunc";
|
||||
case CEPH_CAP_OP_EXPORT: return "export";
|
||||
case CEPH_CAP_OP_IMPORT: return "import";
|
||||
case CEPH_CAP_OP_UPDATE: return "update";
|
||||
case CEPH_CAP_OP_DROP: return "drop";
|
||||
case CEPH_CAP_OP_FLUSH: return "flush";
|
||||
case CEPH_CAP_OP_FLUSH_ACK: return "flush_ack";
|
||||
case CEPH_CAP_OP_FLUSHSNAP: return "flushsnap";
|
||||
case CEPH_CAP_OP_FLUSHSNAP_ACK: return "flushsnap_ack";
|
||||
case CEPH_CAP_OP_RELEASE: return "release";
|
||||
case CEPH_CAP_OP_RENEW: return "renew";
|
||||
}
|
||||
return "???";
|
||||
}
|
||||
|
||||
const char *ceph_lease_op_name(int o)
|
||||
{
|
||||
switch (o) {
|
||||
case CEPH_MDS_LEASE_REVOKE: return "revoke";
|
||||
case CEPH_MDS_LEASE_RELEASE: return "release";
|
||||
case CEPH_MDS_LEASE_RENEW: return "renew";
|
||||
case CEPH_MDS_LEASE_REVOKE_ACK: return "revoke_ack";
|
||||
}
|
||||
return "???";
|
||||
}
|
||||
|
||||
const char *ceph_snap_op_name(int o)
|
||||
{
|
||||
switch (o) {
|
||||
case CEPH_SNAP_OP_UPDATE: return "update";
|
||||
case CEPH_SNAP_OP_CREATE: return "create";
|
||||
case CEPH_SNAP_OP_DESTROY: return "destroy";
|
||||
case CEPH_SNAP_OP_SPLIT: return "split";
|
||||
}
|
||||
return "???";
|
||||
}
|
||||
157
fs/ceph/msgr.h
Normal file
157
fs/ceph/msgr.h
Normal file
|
|
@ -0,0 +1,157 @@
|
|||
#ifndef __MSGR_H
|
||||
#define __MSGR_H
|
||||
|
||||
/*
|
||||
* Data types for message passing layer used by Ceph.
|
||||
*/
|
||||
|
||||
#define CEPH_MON_PORT 6789 /* default monitor port */
|
||||
|
||||
/*
|
||||
* client-side processes will try to bind to ports in this
|
||||
* range, simply for the benefit of tools like nmap or wireshark
|
||||
* that would like to identify the protocol.
|
||||
*/
|
||||
#define CEPH_PORT_FIRST 6789
|
||||
#define CEPH_PORT_START 6800 /* non-monitors start here */
|
||||
#define CEPH_PORT_LAST 6900
|
||||
|
||||
/*
|
||||
* tcp connection banner. include a protocol version. and adjust
|
||||
* whenever the wire protocol changes. try to keep this string length
|
||||
* constant.
|
||||
*/
|
||||
#define CEPH_BANNER "ceph v021"
|
||||
#define CEPH_BANNER_MAX_LEN 30
|
||||
|
||||
|
||||
/*
|
||||
* Rollover-safe type and comparator for 32-bit sequence numbers.
|
||||
* Comparator returns -1, 0, or 1.
|
||||
*/
|
||||
typedef __u32 ceph_seq_t;
|
||||
|
||||
static inline __s32 ceph_seq_cmp(__u32 a, __u32 b)
|
||||
{
|
||||
return (__s32)a - (__s32)b;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* entity_name -- logical name for a process participating in the
|
||||
* network, e.g. 'mds0' or 'osd3'.
|
||||
*/
|
||||
struct ceph_entity_name {
|
||||
__u8 type; /* CEPH_ENTITY_TYPE_* */
|
||||
__le64 num;
|
||||
} __attribute__ ((packed));
|
||||
|
||||
#define CEPH_ENTITY_TYPE_MON 1
|
||||
#define CEPH_ENTITY_TYPE_MDS 2
|
||||
#define CEPH_ENTITY_TYPE_OSD 3
|
||||
#define CEPH_ENTITY_TYPE_CLIENT 4
|
||||
#define CEPH_ENTITY_TYPE_ADMIN 5
|
||||
|
||||
/*
|
||||
* entity_addr -- network address
|
||||
*/
|
||||
struct ceph_entity_addr {
|
||||
__le32 erank; /* entity's rank in process */
|
||||
__le32 nonce; /* unique id for process (e.g. pid) */
|
||||
struct sockaddr_storage in_addr;
|
||||
} __attribute__ ((packed));
|
||||
|
||||
static inline bool ceph_entity_addr_is_local(const struct ceph_entity_addr *a,
|
||||
const struct ceph_entity_addr *b)
|
||||
{
|
||||
return a->nonce == b->nonce &&
|
||||
memcmp(&a->in_addr, &b->in_addr, sizeof(a->in_addr)) == 0;
|
||||
}
|
||||
|
||||
static inline bool ceph_entity_addr_equal(const struct ceph_entity_addr *a,
|
||||
const struct ceph_entity_addr *b)
|
||||
{
|
||||
return memcmp(a, b, sizeof(*a)) == 0;
|
||||
}
|
||||
|
||||
struct ceph_entity_inst {
|
||||
struct ceph_entity_name name;
|
||||
struct ceph_entity_addr addr;
|
||||
} __attribute__ ((packed));
|
||||
|
||||
|
||||
/* used by message exchange protocol */
|
||||
#define CEPH_MSGR_TAG_READY 1 /* server->client: ready for messages */
|
||||
#define CEPH_MSGR_TAG_RESETSESSION 2 /* server->client: reset, try again */
|
||||
#define CEPH_MSGR_TAG_WAIT 3 /* server->client: wait for racing
|
||||
incoming connection */
|
||||
#define CEPH_MSGR_TAG_RETRY_SESSION 4 /* server->client + cseq: try again
|
||||
with higher cseq */
|
||||
#define CEPH_MSGR_TAG_RETRY_GLOBAL 5 /* server->client + gseq: try again
|
||||
with higher gseq */
|
||||
#define CEPH_MSGR_TAG_CLOSE 6 /* closing pipe */
|
||||
#define CEPH_MSGR_TAG_MSG 7 /* message */
|
||||
#define CEPH_MSGR_TAG_ACK 8 /* message ack */
|
||||
#define CEPH_MSGR_TAG_KEEPALIVE 9 /* just a keepalive byte! */
|
||||
#define CEPH_MSGR_TAG_BADPROTOVER 10 /* bad protocol version */
|
||||
|
||||
|
||||
/*
|
||||
* connection negotiation
|
||||
*/
|
||||
struct ceph_msg_connect {
|
||||
__le32 host_type; /* CEPH_ENTITY_TYPE_* */
|
||||
__le32 global_seq; /* count connections initiated by this host */
|
||||
__le32 connect_seq; /* count connections initiated in this session */
|
||||
__le32 protocol_version;
|
||||
__u8 flags; /* CEPH_MSG_CONNECT_* */
|
||||
} __attribute__ ((packed));
|
||||
|
||||
struct ceph_msg_connect_reply {
|
||||
__u8 tag;
|
||||
__le32 global_seq;
|
||||
__le32 connect_seq;
|
||||
__le32 protocol_version;
|
||||
__u8 flags;
|
||||
} __attribute__ ((packed));
|
||||
|
||||
#define CEPH_MSG_CONNECT_LOSSY 1 /* messages i send may be safely dropped */
|
||||
|
||||
|
||||
/*
|
||||
* message header
|
||||
*/
|
||||
struct ceph_msg_header {
|
||||
__le64 seq; /* message seq# for this session */
|
||||
__le16 type; /* message type */
|
||||
__le16 priority; /* priority. higher value == higher priority */
|
||||
|
||||
__le32 front_len; /* bytes in main payload */
|
||||
__le32 middle_len;/* bytes in middle payload */
|
||||
__le32 data_len; /* bytes of data payload */
|
||||
__le16 data_off; /* sender: include full offset;
|
||||
receiver: mask against ~PAGE_MASK */
|
||||
|
||||
struct ceph_entity_inst src, orig_src;
|
||||
__le32 dst_erank;
|
||||
__le32 crc; /* header crc32c */
|
||||
} __attribute__ ((packed));
|
||||
|
||||
#define CEPH_MSG_PRIO_LOW 64
|
||||
#define CEPH_MSG_PRIO_DEFAULT 127
|
||||
#define CEPH_MSG_PRIO_HIGH 196
|
||||
#define CEPH_MSG_PRIO_HIGHEST 255
|
||||
|
||||
/*
|
||||
* follows data payload
|
||||
*/
|
||||
struct ceph_msg_footer {
|
||||
__le32 front_crc, middle_crc, data_crc;
|
||||
__u8 flags;
|
||||
} __attribute__ ((packed));
|
||||
|
||||
#define CEPH_MSG_FOOTER_COMPLETE (1<<0) /* msg wasn't aborted */
|
||||
#define CEPH_MSG_FOOTER_NOCRC (1<<1) /* no data crc */
|
||||
|
||||
|
||||
#endif
|
||||
372
fs/ceph/rados.h
Normal file
372
fs/ceph/rados.h
Normal file
|
|
@ -0,0 +1,372 @@
|
|||
#ifndef __RADOS_H
|
||||
#define __RADOS_H
|
||||
|
||||
/*
|
||||
* Data types for the Ceph distributed object storage layer RADOS
|
||||
* (Reliable Autonomic Distributed Object Store).
|
||||
*/
|
||||
|
||||
#include "msgr.h"
|
||||
|
||||
/*
|
||||
* fs id
|
||||
*/
|
||||
struct ceph_fsid {
|
||||
unsigned char fsid[16];
|
||||
};
|
||||
|
||||
static inline int ceph_fsid_compare(const struct ceph_fsid *a,
|
||||
const struct ceph_fsid *b)
|
||||
{
|
||||
return memcmp(a, b, sizeof(*a));
|
||||
}
|
||||
|
||||
/*
|
||||
* ino, object, etc.
|
||||
*/
|
||||
typedef __le64 ceph_snapid_t;
|
||||
#define CEPH_SNAPDIR ((__u64)(-1)) /* reserved for hidden .snap dir */
|
||||
#define CEPH_NOSNAP ((__u64)(-2)) /* "head", "live" revision */
|
||||
#define CEPH_MAXSNAP ((__u64)(-3)) /* largest valid snapid */
|
||||
|
||||
struct ceph_timespec {
|
||||
__le32 tv_sec;
|
||||
__le32 tv_nsec;
|
||||
} __attribute__ ((packed));
|
||||
|
||||
|
||||
/*
|
||||
* object layout - how objects are mapped into PGs
|
||||
*/
|
||||
#define CEPH_OBJECT_LAYOUT_HASH 1
|
||||
#define CEPH_OBJECT_LAYOUT_LINEAR 2
|
||||
#define CEPH_OBJECT_LAYOUT_HASHINO 3
|
||||
|
||||
/*
|
||||
* pg layout -- how PGs are mapped onto (sets of) OSDs
|
||||
*/
|
||||
#define CEPH_PG_LAYOUT_CRUSH 0
|
||||
#define CEPH_PG_LAYOUT_HASH 1
|
||||
#define CEPH_PG_LAYOUT_LINEAR 2
|
||||
#define CEPH_PG_LAYOUT_HYBRID 3
|
||||
|
||||
|
||||
/*
|
||||
* placement group.
|
||||
* we encode this into one __le64.
|
||||
*/
|
||||
union ceph_pg {
|
||||
__u64 pg64;
|
||||
struct {
|
||||
__s16 preferred; /* preferred primary osd */
|
||||
__u16 ps; /* placement seed */
|
||||
__u32 pool; /* object pool */
|
||||
} __attribute__ ((packed)) pg;
|
||||
} __attribute__ ((packed));
|
||||
|
||||
/*
|
||||
* pg_pool is a set of pgs storing a pool of objects
|
||||
*
|
||||
* pg_num -- base number of pseudorandomly placed pgs
|
||||
*
|
||||
* pgp_num -- effective number when calculating pg placement. this
|
||||
* is used for pg_num increases. new pgs result in data being "split"
|
||||
* into new pgs. for this to proceed smoothly, new pgs are intiially
|
||||
* colocated with their parents; that is, pgp_num doesn't increase
|
||||
* until the new pgs have successfully split. only _then_ are the new
|
||||
* pgs placed independently.
|
||||
*
|
||||
* lpg_num -- localized pg count (per device). replicas are randomly
|
||||
* selected.
|
||||
*
|
||||
* lpgp_num -- as above.
|
||||
*/
|
||||
#define CEPH_PG_TYPE_REP 1
|
||||
#define CEPH_PG_TYPE_RAID4 2
|
||||
struct ceph_pg_pool {
|
||||
__u8 type; /* CEPH_PG_TYPE_* */
|
||||
__u8 size; /* number of osds in each pg */
|
||||
__u8 crush_ruleset; /* crush placement rule */
|
||||
__le32 pg_num, pgp_num; /* number of pg's */
|
||||
__le32 lpg_num, lpgp_num; /* number of localized pg's */
|
||||
__le32 last_change; /* most recent epoch changed */
|
||||
__le64 snap_seq; /* seq for per-pool snapshot */
|
||||
__le32 snap_epoch; /* epoch of last snap */
|
||||
__le32 num_snaps;
|
||||
__le32 num_removed_snap_intervals;
|
||||
} __attribute__ ((packed));
|
||||
|
||||
/*
|
||||
* stable_mod func is used to control number of placement groups.
|
||||
* similar to straight-up modulo, but produces a stable mapping as b
|
||||
* increases over time. b is the number of bins, and bmask is the
|
||||
* containing power of 2 minus 1.
|
||||
*
|
||||
* b <= bmask and bmask=(2**n)-1
|
||||
* e.g., b=12 -> bmask=15, b=123 -> bmask=127
|
||||
*/
|
||||
static inline int ceph_stable_mod(int x, int b, int bmask)
|
||||
{
|
||||
if ((x & bmask) < b)
|
||||
return x & bmask;
|
||||
else
|
||||
return x & (bmask >> 1);
|
||||
}
|
||||
|
||||
/*
|
||||
* object layout - how a given object should be stored.
|
||||
*/
|
||||
struct ceph_object_layout {
|
||||
__le64 ol_pgid; /* raw pg, with _full_ ps precision. */
|
||||
__le32 ol_stripe_unit; /* for per-object parity, if any */
|
||||
} __attribute__ ((packed));
|
||||
|
||||
/*
|
||||
* compound epoch+version, used by storage layer to serialize mutations
|
||||
*/
|
||||
struct ceph_eversion {
|
||||
__le32 epoch;
|
||||
__le64 version;
|
||||
} __attribute__ ((packed));
|
||||
|
||||
/*
|
||||
* osd map bits
|
||||
*/
|
||||
|
||||
/* status bits */
|
||||
#define CEPH_OSD_EXISTS 1
|
||||
#define CEPH_OSD_UP 2
|
||||
|
||||
/* osd weights. fixed point value: 0x10000 == 1.0 ("in"), 0 == "out" */
|
||||
#define CEPH_OSD_IN 0x10000
|
||||
#define CEPH_OSD_OUT 0
|
||||
|
||||
|
||||
/*
|
||||
* osd map flag bits
|
||||
*/
|
||||
#define CEPH_OSDMAP_NEARFULL (1<<0) /* sync writes (near ENOSPC) */
|
||||
#define CEPH_OSDMAP_FULL (1<<1) /* no data writes (ENOSPC) */
|
||||
#define CEPH_OSDMAP_PAUSERD (1<<2) /* pause all reads */
|
||||
#define CEPH_OSDMAP_PAUSEWR (1<<3) /* pause all writes */
|
||||
#define CEPH_OSDMAP_PAUSEREC (1<<4) /* pause recovery */
|
||||
|
||||
/*
|
||||
* osd ops
|
||||
*/
|
||||
#define CEPH_OSD_OP_MODE 0xf000
|
||||
#define CEPH_OSD_OP_MODE_RD 0x1000
|
||||
#define CEPH_OSD_OP_MODE_WR 0x2000
|
||||
#define CEPH_OSD_OP_MODE_RMW 0x3000
|
||||
#define CEPH_OSD_OP_MODE_SUB 0x4000
|
||||
#define CEPH_OSD_OP_MODE_EXEC 0x8000
|
||||
|
||||
#define CEPH_OSD_OP_TYPE 0x0f00
|
||||
#define CEPH_OSD_OP_TYPE_LOCK 0x0100
|
||||
#define CEPH_OSD_OP_TYPE_DATA 0x0200
|
||||
#define CEPH_OSD_OP_TYPE_ATTR 0x0300
|
||||
#define CEPH_OSD_OP_TYPE_EXEC 0x0400
|
||||
#define CEPH_OSD_OP_TYPE_PG 0x0500
|
||||
|
||||
enum {
|
||||
/** data **/
|
||||
/* read */
|
||||
CEPH_OSD_OP_READ = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 1,
|
||||
CEPH_OSD_OP_STAT = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 2,
|
||||
|
||||
/* fancy read */
|
||||
CEPH_OSD_OP_MASKTRUNC = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 4,
|
||||
|
||||
/* write */
|
||||
CEPH_OSD_OP_WRITE = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 1,
|
||||
CEPH_OSD_OP_WRITEFULL = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 2,
|
||||
CEPH_OSD_OP_TRUNCATE = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 3,
|
||||
CEPH_OSD_OP_ZERO = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 4,
|
||||
CEPH_OSD_OP_DELETE = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 5,
|
||||
|
||||
/* fancy write */
|
||||
CEPH_OSD_OP_APPEND = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 6,
|
||||
CEPH_OSD_OP_STARTSYNC = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 7,
|
||||
CEPH_OSD_OP_SETTRUNC = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 8,
|
||||
CEPH_OSD_OP_TRIMTRUNC = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 9,
|
||||
|
||||
CEPH_OSD_OP_TMAPUP = CEPH_OSD_OP_MODE_RMW | CEPH_OSD_OP_TYPE_DATA | 10,
|
||||
CEPH_OSD_OP_TMAPPUT = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 11,
|
||||
CEPH_OSD_OP_TMAPGET = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 12,
|
||||
|
||||
CEPH_OSD_OP_CREATE = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 13,
|
||||
|
||||
/** attrs **/
|
||||
/* read */
|
||||
CEPH_OSD_OP_GETXATTR = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_ATTR | 1,
|
||||
CEPH_OSD_OP_GETXATTRS = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_ATTR | 2,
|
||||
|
||||
/* write */
|
||||
CEPH_OSD_OP_SETXATTR = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_ATTR | 1,
|
||||
CEPH_OSD_OP_SETXATTRS = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_ATTR | 2,
|
||||
CEPH_OSD_OP_RESETXATTRS = CEPH_OSD_OP_MODE_WR|CEPH_OSD_OP_TYPE_ATTR | 3,
|
||||
CEPH_OSD_OP_RMXATTR = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_ATTR | 4,
|
||||
|
||||
/** subop **/
|
||||
CEPH_OSD_OP_PULL = CEPH_OSD_OP_MODE_SUB | 1,
|
||||
CEPH_OSD_OP_PUSH = CEPH_OSD_OP_MODE_SUB | 2,
|
||||
CEPH_OSD_OP_BALANCEREADS = CEPH_OSD_OP_MODE_SUB | 3,
|
||||
CEPH_OSD_OP_UNBALANCEREADS = CEPH_OSD_OP_MODE_SUB | 4,
|
||||
CEPH_OSD_OP_SCRUB = CEPH_OSD_OP_MODE_SUB | 5,
|
||||
|
||||
/** lock **/
|
||||
CEPH_OSD_OP_WRLOCK = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 1,
|
||||
CEPH_OSD_OP_WRUNLOCK = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 2,
|
||||
CEPH_OSD_OP_RDLOCK = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 3,
|
||||
CEPH_OSD_OP_RDUNLOCK = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 4,
|
||||
CEPH_OSD_OP_UPLOCK = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 5,
|
||||
CEPH_OSD_OP_DNLOCK = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 6,
|
||||
|
||||
/** exec **/
|
||||
CEPH_OSD_OP_CALL = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_EXEC | 1,
|
||||
|
||||
/** pg **/
|
||||
CEPH_OSD_OP_PGLS = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_PG | 1,
|
||||
};
|
||||
|
||||
static inline int ceph_osd_op_type_lock(int op)
|
||||
{
|
||||
return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_LOCK;
|
||||
}
|
||||
static inline int ceph_osd_op_type_data(int op)
|
||||
{
|
||||
return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_DATA;
|
||||
}
|
||||
static inline int ceph_osd_op_type_attr(int op)
|
||||
{
|
||||
return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_ATTR;
|
||||
}
|
||||
static inline int ceph_osd_op_type_exec(int op)
|
||||
{
|
||||
return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_EXEC;
|
||||
}
|
||||
static inline int ceph_osd_op_type_pg(int op)
|
||||
{
|
||||
return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_PG;
|
||||
}
|
||||
|
||||
static inline int ceph_osd_op_mode_subop(int op)
|
||||
{
|
||||
return (op & CEPH_OSD_OP_MODE) == CEPH_OSD_OP_MODE_SUB;
|
||||
}
|
||||
static inline int ceph_osd_op_mode_read(int op)
|
||||
{
|
||||
return (op & CEPH_OSD_OP_MODE) == CEPH_OSD_OP_MODE_RD;
|
||||
}
|
||||
static inline int ceph_osd_op_mode_modify(int op)
|
||||
{
|
||||
return (op & CEPH_OSD_OP_MODE) == CEPH_OSD_OP_MODE_WR;
|
||||
}
|
||||
|
||||
#define CEPH_OSD_TMAP_HDR 'h'
|
||||
#define CEPH_OSD_TMAP_SET 's'
|
||||
#define CEPH_OSD_TMAP_RM 'r'
|
||||
|
||||
extern const char *ceph_osd_op_name(int op);
|
||||
|
||||
|
||||
/*
|
||||
* osd op flags
|
||||
*
|
||||
* An op may be READ, WRITE, or READ|WRITE.
|
||||
*/
|
||||
enum {
|
||||
CEPH_OSD_FLAG_ACK = 1, /* want (or is) "ack" ack */
|
||||
CEPH_OSD_FLAG_ONNVRAM = 2, /* want (or is) "onnvram" ack */
|
||||
CEPH_OSD_FLAG_ONDISK = 4, /* want (or is) "ondisk" ack */
|
||||
CEPH_OSD_FLAG_RETRY = 8, /* resend attempt */
|
||||
CEPH_OSD_FLAG_READ = 16, /* op may read */
|
||||
CEPH_OSD_FLAG_WRITE = 32, /* op may write */
|
||||
CEPH_OSD_FLAG_ORDERSNAP = 64, /* EOLDSNAP if snapc is out of order */
|
||||
CEPH_OSD_FLAG_PEERSTAT = 128, /* msg includes osd_peer_stat */
|
||||
CEPH_OSD_FLAG_BALANCE_READS = 256,
|
||||
CEPH_OSD_FLAG_PARALLELEXEC = 512, /* execute op in parallel */
|
||||
CEPH_OSD_FLAG_PGOP = 1024, /* pg op, no object */
|
||||
};
|
||||
|
||||
enum {
|
||||
CEPH_OSD_OP_FLAG_EXCL = 1, /* EXCL object create */
|
||||
};
|
||||
|
||||
#define EOLDSNAPC ERESTART /* ORDERSNAP flag set; writer has old snapc*/
|
||||
#define EBLACKLISTED ESHUTDOWN /* blacklisted */
|
||||
|
||||
/*
|
||||
* an individual object operation. each may be accompanied by some data
|
||||
* payload
|
||||
*/
|
||||
struct ceph_osd_op {
|
||||
__le16 op; /* CEPH_OSD_OP_* */
|
||||
__le32 flags; /* CEPH_OSD_FLAG_* */
|
||||
union {
|
||||
struct {
|
||||
__le64 offset, length;
|
||||
} __attribute__ ((packed)) extent;
|
||||
struct {
|
||||
__le32 name_len;
|
||||
__le32 value_len;
|
||||
} __attribute__ ((packed)) xattr;
|
||||
struct {
|
||||
__le64 truncate_size;
|
||||
__le32 truncate_seq;
|
||||
} __attribute__ ((packed)) trunc;
|
||||
struct {
|
||||
__u8 class_len;
|
||||
__u8 method_len;
|
||||
__u8 argc;
|
||||
__le32 indata_len;
|
||||
} __attribute__ ((packed)) cls;
|
||||
struct {
|
||||
__le64 cookie, count;
|
||||
} __attribute__ ((packed)) pgls;
|
||||
};
|
||||
__le32 payload_len;
|
||||
} __attribute__ ((packed));
|
||||
|
||||
/*
|
||||
* osd request message header. each request may include multiple
|
||||
* ceph_osd_op object operations.
|
||||
*/
|
||||
struct ceph_osd_request_head {
|
||||
__le64 tid; /* transaction id */
|
||||
__le32 client_inc; /* client incarnation */
|
||||
struct ceph_object_layout layout; /* pgid */
|
||||
__le32 osdmap_epoch; /* client's osdmap epoch */
|
||||
|
||||
__le32 flags;
|
||||
|
||||
struct ceph_timespec mtime; /* for mutations only */
|
||||
struct ceph_eversion reassert_version; /* if we are replaying op */
|
||||
|
||||
__le32 object_len; /* length of object name */
|
||||
|
||||
__le64 snapid; /* snapid to read */
|
||||
__le64 snap_seq; /* writer's snap context */
|
||||
__le32 num_snaps;
|
||||
|
||||
__le16 num_ops;
|
||||
struct ceph_osd_op ops[]; /* followed by ops[], obj, ticket, snaps */
|
||||
} __attribute__ ((packed));
|
||||
|
||||
struct ceph_osd_reply_head {
|
||||
__le64 tid; /* transaction id */
|
||||
__le32 client_inc; /* client incarnation */
|
||||
__le32 flags;
|
||||
struct ceph_object_layout layout;
|
||||
__le32 osdmap_epoch;
|
||||
struct ceph_eversion reassert_version; /* for replaying uncommitted */
|
||||
|
||||
__le32 result; /* result code */
|
||||
|
||||
__le32 object_len; /* length of object name */
|
||||
__le32 num_ops;
|
||||
struct ceph_osd_op ops[0]; /* ops[], object */
|
||||
} __attribute__ ((packed));
|
||||
|
||||
|
||||
#endif
|
||||
Loading…
Reference in a new issue