Ceph » CephFS

Looks like somebody accidentally deleted #4570 (and there's no undelete in Redmine best I can tell), so this ticket will stand in for it. Unfortunately I didn't download the logs...

Sam noted that the unlink was waiting for a readlock:

2013-03-28 10:25:54.657128 7f1fcb8be700 10 mds.0.cache.ino(10000000000) add_waiter tag 600000 0x172d4e0 !ambig 1 !frozen 1 !freezing 1
2013-03-28 10:25:54.657134 7f1fcb8be700 15 mds.0.cache.ino(10000000000) taking waiter here
2013-03-28 10:25:54.657137 7f1fcb8be700 10 mds.0.locker nudge_log (ilink sync->lock) on [inode 10000000000 [2,head] /1364491554516-testFileCreationNonRecursive auth v2 pv4 ap=3+0 s=0 n(v0 1=1+0) (ilink sync->lock) (ifile excl w=1) (iversion lock w=1 last_client=4302) cr={4302=0-65536@1} caps={4302=pAsXsFs/pAsLsXsFs/-@4},l=4302(-1) | ptrwaiter=1 request=0 lock=3 caps=1 dirty=1 waiter=1 authpin=1 0x17d5540]

Zheng Yan noted that:
2013-03-28 10:25:54.654534 7fa06effd700 10 client.4302 cap mds.0 issued pAsLsXsFsxcrwb implemented pAsxXsxFsxcrwb revoking AxXx

'issued' has 'Ls', but 'implemented' does not. Please try patch below.

(Unfortunately Redmine mangled the patch, but it was on Client.cc:3567; I believe adding a "cap->implemented |= new_caps;" line?