The only NFS problems I've really ever had w/ OpenBSD, is if our NFS
server goes down or is rebooted, the NFS mount never comes back and will
essentially hang (especially if you try to unmount the stale link)...
I've never tried a mount -u or a unmount -f tho...
Federico Giannici wrote:
I have an MX mail server that receives email messages and saves them to
an email storage server via NFS.
Both pc are OpenBSD i386, version 3.7 for the NFS client (MX server) and
3.4 for the NFS server (the storage server).
From time to time the connections from the NFS clients seem to freeze
(at least the new ones).
I applied the famous NFS patch that disables write gathering for v3
(http://marc.theaimsgroup.com/?l=openbsd-misc&m=110676811107986&w=2),
but the problem remains (perhaps a little less frequent).
I have also raised the number of nfsd processes and "vfs.nfs.iothreads"
to 20.
The server uses a fxp interface and the client an sk one. From "netstat
-i" I have seen that there are no errors or collisions.
Here is the nfsstat output for the client and the server after almost a
day of uptime:
Client Info:
Rpc Counts:
Getattr Setattr Lookup Readlink Read Write Create
Remove
136400 12 429651 0 13653 178549 25790
25819
Rename Link Symlink Mkdir Rmdir Readdir RdirPlus
Access
5415 20016 0 16 0 336388 0
1359316
Mknod Fsstat Fsinfo PathConf Commit
0 27008 1 0 42530
Rpc Info:
TimedOut Invalid X Replies Retries Requests
4 0 139 28889 2600564
Cache Info:
Attr Hits Misses Lkup Hits Misses BioR Hits Misses BioW Hits
Misses
1669083 136400 1239823 424253 67080 13653 632860
178549
BioRLHits Misses BioD Hits Misses DirE Hits Misses
0 0 0 0 26996 27954
Server Info:
Getattr Setattr Lookup Readlink Read Write Create
Remove
90847 0 269426 0 8882 137000 16908
16947
Rename Link Symlink Mkdir Rmdir Readdir RdirPlus
Access
3263 13427 0 0 0 197032 0
872760
Mknod Fsstat Fsinfo PathConf Commit
0 16594 0 0 28598
Server Ret-Failed
65447
Server Faults
0
Server Cache Stats:
Inprog Idem Non-idem Misses
21 14256 920 1657428
Server Write Gathering:
WriteOps WriteRPC Opsaved
136997 137000 3
What make me worry is the hight value of the "Ret-Failed" field.
Is it normal?
I have no experience of NFS, is it normal that sometime ot stalls?
What else I could do to prevent this to happen?
Thanks.
--
Tony Lambiris [ [EMAIL PROTECTED] ]
"so if it is really hard for you then perhaps you are just
retarded and need treatment w/ electricity and if that does
not help then perhaps should not use computers..."
