Date: Thu, 11 Oct 2001 12:51:08 -0500 From: Ryan Dooley <dooleyr@missouri.edu> Cc: stable@FreeBSD.ORG Subject: Re: Uh... server crashes every day :-/ any thoughts? Message-ID: <3BC5DC0C.BFEBB61E@missouri.edu> References: <5.1.0.14.0.20011011101456.0368e510@marble.sentex.ca>
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Here's a few other things I've noticed about my situation...
This looks to be largly NFS... every once and a while, we get
input/output I/O errors to the NFS volume (gzip'ing files won't, web
pages come up with document empty errors, scp's off the system don't
work the first time). Usually, the next access to the file does the
trick. Sounds like a cache miss/error. I've got output below from an
''nfsstat -s".
I belive the crash from this morning was due to all of our NFS clients
lighting up at the same time (about 8am when the students came into sit
down and use the machines in front of them).
I also managed to get our NFS server to freeze for about 7 seconds
running a simple test:
time dd if=/dev/zero of=/nfs/zeros bs=16k count=16384
Some where around 502MB, the system just hung. I control-C'd the
process and the system came back (as well as my heart beat :-)
I can't provide useful sysctl output from this box, b/c the fibre array
and sysctl don't get along (Paul Saab got me a fix for that, but I've
not had a chance to apply it yet). Everything is pretty much stock.
#### from nfsstat -s ####
Server Info:
Getattr Setattr Lookup Readlink Read Write Create
Remove
209105 98804 1294806 955 431951 358121
58140 54060
Rename Link Symlink Mkdir Rmdir Readdir RdirPlus
Access
3819 1347 503 3287 1488 64968 6809
178523
Mknod Fsstat Fsinfo PathConf Commit GLease
Vacate Evict
1 4956 3541 0 189432 0
0 0
Server Ret-Failed
423258
Server Faults
0
Server Cache Stats:
Inprog Idem Non-idem Misses
0 43849 36 2954483
Server Lease Stats:
Leases PeakL GLeases
0 0 0
Server Write Gathering:
WriteOps WriteRPC Opsaved
354687 358121 3434
Ryan
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