On Fri, 21 May 2010 11:32:33 -0400 (EDT) Rick Macklem wrote: On Fri, 21 May 2010, Mark Morley wrote:
> Having an issue with a file server here (7.3-STABLE i386) > > The nfsd processes are hanging. Client access to the nfs shares stops > working and the nfsd processes on the server cannot be killed by any means. > There are no errors showing up anywhere on the server. The network > connection to the server seems fine (ie: anything other than nfs traffic > seems ok). Rebooting the server fixes the problem for a while, but it > doesn't reboot easily. It times out on terminating the nfsd processes. When > it finally does reboot the file system isn't marked clean, resulting in a > long wait for fsck (although it doesn't find any problems, it's a multi > terrabyte share and it takes a while). > > This morning it did it again. This time I tried manually killing nfsd but > nothing I did would make them die. No errors. > Next time it happens, do a "ps axlH" to see what the nfsd threads are waiting for. It might give you a hint as to what is happening. Ok, it did it again. ps axlH shows all the nfsd processes stuck in the _ufs_ state. The server isn't doing anything else, no other processes seem to be monopolizing resources or disks in any way. rpcinfo doesn't show anything amiss as far as I can tell (ie: rpc is running) After a reboot, one of the 32 nfsd's almost immediately goes into the "ufs" state and never leaves it (and never racks up and CPU time either). The others are fine. Slowly over time more and more enter this state. When I rebooted it today, all but one were in that state. The clients were bogging down, presumably because the one and only functioning nfsd was overworked. One client is running 8.1-prerelease as a test, and that particular client only will start getting lots of timeouts accessing the nfs share (even with less load than the other clients). Just in case it's tickling something on the server I've shut it down this time and I'm leaving it off for the time being. Any further thoughts? Mark _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org" X-pstn-neptune: 2/1/0.50/77 X-pstn-levels: (S:70.94084/99.90000 CV:99.9000 FC:95.5390 LC:95.5390 R:95.9108 P:95.9108 M:97.0282 C:98.6951 ) X-pstn-settings: 4 (1.5000:1.5000) s cv gt3 gt2 gt1 r p m c X-pstn-addresses: from <m...@islandnet.com> [294/10]
