On 4/17/07, Pawel Jakub Dawidek <pjd_at_freebsd.org> wrote: > On Tue, Apr 17, 2007 at 10:51:37AM +0900, Hidetoshi Shimokawa wrote: > > I can repoduce this hang. > > > > # cd /pool/test/.zfs/snapshot > > # /bin/ls > > snap > > # /bin/ls -F > > ls: snap: No such file or directory > > # /bin/ls -F > > (hangs) > > Are you able to break into debugger? I was able to reproduce it once > (but with panic in crdup()), but I can no longer do it... In my case, only 'ls' hangs and other part of the system is normal. # ps alxg | grep ls 0 2129 2118 0 -4 0 6100 1512 zfs D+ p0 0:00.01 /bin/ls -F Once, I got "panic: lockmgr: locking against myself" 10 or 20 min. later of "ls -F". > > It looks like another name cache problem for me. > > I noticed 'cache_purge(vp)' is commented out in domount() in opensolaris_vfs.c. > > Shouldn't we need 'dnlc_purge_vp(vp)' here? > > There is dnlc_purge_vfsp() at the begining of zfs_umount(), which should > be sufficient. domount() of opensolaris also has dnlc_purge_vp() to invalidate cached entry for the mount point. Do you really think it's unnecessary? http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/fs/vfs.c#1383 -- /\ Hidetoshi Shimokawa \/ simokawa_at_FreeBSD.ORGReceived on Tue Apr 17 2007 - 13:02:09 UTC
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