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ceph: track laggy state of mds from mdsmap

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Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil 2010-06-17 14:19:01 -07:00
parent cd84db6e40
commit 0deb01c999
3 changed files with 16 additions and 2 deletions
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4
fs/ceph/mds_client.c
View file

@ -2377,9 +2377,11 @@ static void check_new_map(struct ceph_mds_client *mdsc,
oldstate = ceph_mdsmap_get_state(oldmap, i);
newstate = ceph_mdsmap_get_state(newmap, i);
dout("check_new_map mds%d state %s -> %s (session %s)\n",
dout("check_new_map mds%d state %s%s -> %s%s (session %s)\n",
i, ceph_mds_state_name(oldstate),
ceph_mdsmap_is_laggy(oldmap, i) ? " (laggy)" : "",
ceph_mds_state_name(newstate),
ceph_mdsmap_is_laggy(newmap, i) ? " (laggy)" : "",
session_state_name(s->s_state));
if (memcmp(ceph_mdsmap_get_addr(oldmap, i),

6
fs/ceph/mdsmap.c
View file

@ -85,6 +85,7 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
struct ceph_entity_addr addr;
u32 num_export_targets;
void *pexport_targets = NULL;
struct ceph_timespec laggy_since;
ceph_decode_need(p, end, sizeof(u64)*2 + 1 + sizeof(u32), bad);
global_id = ceph_decode_64(p);
@ -103,7 +104,7 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
state_seq = ceph_decode_64(p);
ceph_decode_copy(p, &addr, sizeof(addr));
ceph_decode_addr(&addr);
*p += sizeof(struct ceph_timespec);
ceph_decode_copy(p, &laggy_since, sizeof(laggy_since));
*p += sizeof(u32);
ceph_decode_32_safe(p, end, namelen, bad);
*p += namelen;
@ -122,6 +123,9 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
m->m_info[mds].global_id = global_id;
m->m_info[mds].state = state;
m->m_info[mds].addr = addr;
m->m_info[mds].laggy =
(laggy_since.tv_sec != 0 ||
laggy_since.tv_nsec != 0);
m->m_info[mds].num_export_targets = num_export_targets;
if (num_export_targets) {
m->m_info[mds].export_targets =

8
fs/ceph/mdsmap.h
View file

@ -13,6 +13,7 @@ struct ceph_mds_info {
struct ceph_entity_addr addr;
s32 state;
int num_export_targets;
bool laggy;
u32 *export_targets;
};
@ -47,6 +48,13 @@ static inline int ceph_mdsmap_get_state(struct ceph_mdsmap *m, int w)
return m->m_info[w].state;
}
static inline bool ceph_mdsmap_is_laggy(struct ceph_mdsmap *m, int w)
{
if (w >= 0 && w < m->m_max_mds)
return m->m_info[w].laggy;
return false;
}
extern int ceph_mdsmap_get_random_mds(struct ceph_mdsmap *m);
extern struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end);
extern void ceph_mdsmap_destroy(struct ceph_mdsmap *m);