10.6.3 - Apparent spontaneous unmount of network volumes
Since updating my server to 10.6.3 I am experiencing spontaneous unmounts of AFP volumes from clients running both 10.6.2 and 10.6.3. In both cases the Console on the client systems reports the following messages:
02/04/2010 3:07:53 am kernel AFP_VFS afpfsCacheLookup: got 2 on root vnode, unmounting vol
02/04/2010 3:07:53 am kernel AFP_VFS afpfs_unmount: /Volumes/XXX, flags 524288, pid 626
(Obviously the PID on the second system is different.)
In both cases there was a Time Machine backup happening during this occurrence which commenced prior to the unmount, but there had been many previous backups which did not trigger an unmount so I am unsure whether this is significant or not.
The only other clue is that on the 10.6.3 client (but not the 10.6.2 client) the following two lines appear in the console immediately prior to the unmount event:
02/04/2010 3:07:53 am KernelEventAgent[40] tid 00000000 type 'afpfs', mounted on '/Volumes/XXX', from 'afp_000000004oMw0oYHtK3gzaWf-2.2e000004', dead
02/04/2010 3:07:53 am com.apple.KernelEventAgent[40] KernelEventAgent: sysctl unmount(afp000000004oMw0oYHtK3gzaWf-2.2e000004): Resource busy
This is definitely becoming an issue for me which I desperately need to resolve.
One other symptom I am experiencing is that both clients seem to repeatedly "lose" their mail POP3 passwords and these need to be re-entered to retrieve mail. I suspect what's actually happening is that authentication is incorrectly failing on the server, triggering the request to re-enter the password, and I wonder whether this is a factor in the AFP unmounts. What's significant here is that this is happening on both the 10.6.2 and 10.6.3 clients; the only common factor is that the server has been updated to 10.6.3.
02/04/2010 3:07:53 am kernel AFP_VFS afpfsCacheLookup: got 2 on root vnode, unmounting vol
02/04/2010 3:07:53 am kernel AFP_VFS afpfs_unmount: /Volumes/XXX, flags 524288, pid 626
(Obviously the PID on the second system is different.)
In both cases there was a Time Machine backup happening during this occurrence which commenced prior to the unmount, but there had been many previous backups which did not trigger an unmount so I am unsure whether this is significant or not.
The only other clue is that on the 10.6.3 client (but not the 10.6.2 client) the following two lines appear in the console immediately prior to the unmount event:
02/04/2010 3:07:53 am KernelEventAgent[40] tid 00000000 type 'afpfs', mounted on '/Volumes/XXX', from 'afp_000000004oMw0oYHtK3gzaWf-2.2e000004', dead
02/04/2010 3:07:53 am com.apple.KernelEventAgent[40] KernelEventAgent: sysctl unmount(afp000000004oMw0oYHtK3gzaWf-2.2e000004): Resource busy
This is definitely becoming an issue for me which I desperately need to resolve.
One other symptom I am experiencing is that both clients seem to repeatedly "lose" their mail POP3 passwords and these need to be re-entered to retrieve mail. I suspect what's actually happening is that authentication is incorrectly failing on the server, triggering the request to re-enter the password, and I wonder whether this is a factor in the AFP unmounts. What's significant here is that this is happening on both the 10.6.2 and 10.6.3 clients; the only common factor is that the server has been updated to 10.6.3.
Mac OS X (10.4)
