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| author | Sage Weil <sage@newdream.net> | 2009-11-09 23:05:48 +0300 |
|---|---|---|
| committer | Sage Weil <sage@newdream.net> | 2009-11-09 23:06:07 +0300 |
| commit | 685f9a5d14194fc35db73e5e7370740ccc14b64a (patch) | |
| tree | 4c34ac2348149d91ad5e08cd105207810f0afdc9 /fs/ceph/mds_client.c | |
| parent | fb690390e305ea51e1883b105c7d3c52d7100ba5 (diff) | |
| download | linux-685f9a5d14194fc35db73e5e7370740ccc14b64a.tar.xz | |
ceph: do not confuse stale and dead (unreconnected) caps
We were using the cap_gen to track both stale caps (caps that timed out
due to temporarily losing touch with the mds) and dead caps that did not
reconnect after an MDS failure. Introduce a recon_gen counter to track
reconnections to restarted MDSs and kill dead caps based on that instead.
Rename gen to cap_gen while we're at it to make it more clear which is
which.
Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs/ceph/mds_client.c')
| -rw-r--r-- | fs/ceph/mds_client.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 210cb6623ea2..828417ae16f9 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -329,6 +329,7 @@ static struct ceph_mds_session *register_session(struct ceph_mds_client *mdsc, ceph_con_open(&s->s_con, ceph_mdsmap_get_addr(mdsc->mdsmap, mds)); spin_lock_init(&s->s_cap_lock); + s->s_recon_gen = 0; s->s_cap_gen = 0; s->s_cap_ttl = 0; s->s_renew_requested = 0; @@ -738,10 +739,11 @@ static int wake_up_session_cb(struct inode *inode, struct ceph_cap *cap, struct ceph_mds_session *session = arg; spin_lock(&inode->i_lock); - if (cap->gen != session->s_cap_gen) { + if (cap->recon_gen != session->s_recon_gen) { pr_err("failed reconnect %p %llx.%llx cap %p " - "(gen %d < session %d)\n", inode, ceph_vinop(inode), - cap, cap->gen, session->s_cap_gen); + "(recon_gen %d < session %d)\n", inode, + ceph_vinop(inode), cap, + cap->recon_gen, session->s_recon_gen); __ceph_remove_cap(cap, NULL); } wake_up(&ceph_inode(inode)->i_cap_wq); @@ -2050,6 +2052,7 @@ static void send_mds_reconnect(struct ceph_mds_client *mdsc, int mds) session->s_state = CEPH_MDS_SESSION_RECONNECTING; session->s_seq = 0; + session->s_recon_gen++; ceph_con_open(&session->s_con, ceph_mdsmap_get_addr(mdsc->mdsmap, mds)); |