Commit graph

16 commits

Author SHA1 Message Date
Sunil Mushran
39a298563e ocfs2/cluster: Print messages when adding/removing nodes
Prints messages when the user adds or removes nodes.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
2010-10-07 17:30:17 -07:00
Mark Fasheh
d02f00cc05 ocfs2: allocation reservations
This patch improves Ocfs2 allocation policy by allowing an inode to
reserve a portion of the local alloc bitmap for itself. The reserved
portion (allocation window) is advisory in that other allocation
windows might steal it if the local alloc bitmap becomes
full. Otherwise, the reservations are honored and guaranteed to be
free. When the local alloc window is moved to a different portion of
the bitmap, existing reservations are discarded.

Reservation windows are represented internally by a red-black
tree. Within that tree, each node represents the reservation window of
one inode. An LRU of active reservations is also maintained. When new
data is written, we allocate it from the inodes window. When all bits
in a window are exhausted, we allocate a new one as close to the
previous one as possible. Should we not find free space, an existing
reservation is pulled off the LRU and cannibalized.

Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2010-05-05 18:17:30 -07:00
Sunil Mushran
9b915181af ocfs2: Use a separate masklog for AST and BASTs
This patch adds a new masklog and uses it allow tracing ASTs and BASTs
in the dlmglue layer. This has been found to be very useful in debugging
cluster locking issues.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-02-27 19:57:06 -08:00
Sunil Mushran
8545e03d82 ocfs2: Add current->comm in trace output
Add current->comm to the standard mlog() output to help with debugging.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-02-26 15:41:08 -08:00
Tao Ma
f2c870e3b1 ocfs2: Add ocfs2_read_refcount_block.
Signed-off-by: Tao Ma <tao.ma@oracle.com>
2009-09-22 20:09:26 -07:00
Coly Li
2b53bc7bff ocfs2: update comments in masklog.h
In the mainline ocfs2 code, the interface for masklog is in files under
/sys/fs/o2cb/masklog, but the comments in fs/ocfs2/cluster/masklog.h
reference the old /proc interface.  They are out of date.

This patch modifies the comments in cluster/masklog.h, which also provides
a bash script example on how to change the log mask bits.

Signed-off-by: Coly Li <coly.li@suse.de>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
2009-05-05 14:48:11 -07:00
Jan Kara
9e33d69f55 ocfs2: Implementation of local and global quota file handling
For each quota type each node has local quota file. In this file it stores
changes users have made to disk usage via this node. Once in a while this
information is synced to global file (and thus with other nodes) so that
limits enforcement at least aproximately works.

Global quota files contain all the information about usage and limits. It's
mostly handled by the generic VFS code (which implements a trie of structures
inside a quota file). We only have to provide functions to convert structures
from on-disk format to in-memory one. We also have to provide wrappers for
various quota functions starting transactions and acquiring necessary cluster
locks before the actual IO is really started.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2009-01-05 08:40:23 -08:00
Tao Ma
f56654c435 ocfs2: Add extent tree operation for xattr value btrees
Add some thin wrappers around ocfs2_insert_extent() for each of the 3
different btree types, ocfs2_inode_insert_extent(),
ocfs2_xattr_value_insert_extent() and ocfs2_xattr_tree_insert_extent(). The
last is for the xattr index btree, which will be used in a followup patch.

All the old callers in file.c etc will call ocfs2_dinode_insert_extent(),
while the other two handle the xattr issue. And the init of extent tree are
handled by these functions.

When storing xattr value which is too large, we will allocate some clusters
for it and here ocfs2_extent_list and ocfs2_extent_rec will also be used. In
order to re-use the b-tree operation code, a new parameter named "private"
is added into ocfs2_extent_tree and it is used to indicate the root of
ocfs2_exent_list. The reason is that we can't deduce the root from the
buffer_head now. It may be in an inode, an ocfs2_xattr_block or even worse,
in any place in an ocfs2_xattr_bucket.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-10-13 16:57:01 -07:00
Mark Fasheh
ef9f86ceb6 ocfs2: Filter -ENOSPC in mlog_errno()
It's almost never worth printing in that situation and we keep forgetting to
manually filter it out.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-11-27 16:47:01 -08:00
Pavel Emelyanov
ba25f9dcc4 Use helpers to obtain task pid in printks
The task_struct->pid member is going to be deprecated, so start
using the helpers (task_pid_nr/task_pid_vnr/task_pid_nr_ns) in
the kernel.

The first thing to start with is the pid, printed to dmesg - in
this case we may safely use task_pid_nr(). Besides, printks produce
more (much more) than a half of all the explicit pid usage.

[akpm@linux-foundation.org: git-drm went and changed lots of stuff]
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-19 11:53:43 -07:00
Greg Kroah-Hartman
823bccfc40 remove "struct subsystem" as it is no longer needed
We need to work on cleaning up the relationship between kobjects, ksets and
ktypes.  The removal of 'struct subsystem' is the first step of this,
especially as it is not really needed at all.

Thanks to Kay for fixing the bugs in this patch.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 18:57:59 -07:00
Joel Becker
2b388c6790 ocfs2: Compile-time disabling of ocfs2 debugging output.
Give gcc the chance to compile out the debug logging code in ocfs2.
This saves some size at the expense of being able to debug the code.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-06-29 14:48:30 -07:00
Mark Fasheh
ea8aa68d36 ocfs2: finally remove MLF* macros
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-03-24 14:58:29 -08:00
Jeff Mahoney
6b7a6c94c9 [PATCH] ocfs2: fix -Wformat warnings when building UML on x86-64
The check to determine which format string is appopriate for u64 and
 friends works in most cases, but UML on x86_64 doesn't define CONFIG_X86_64,
 so it results in screen fulls of compile-time warnings.

 This patch fixes it to handle that case.

 fs/ocfs2/cluster/masklog.h |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-03-01 11:15:49 -08:00
Andrew Morton
a136564702 [PATCH] remove gcc-2 checks
Remove various things which were checking for gcc-1.x and gcc-2.x compilers.

From: Adrian Bunk <bunk@stusta.de>

    Some documentation updates and removes some code paths for gcc < 3.2.

Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08 20:14:02 -08:00
Zach Brown
52fd3d6fea [PATCH] OCFS2: The Second Oracle Cluster Filesystem
Very simple printk wrapper which adds the ability to enable various
sets of debug messages at run-time.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
2006-01-03 11:45:45 -08:00