I/O Errors with hard mounts
Subsystems (2)
You have a=A0significant number of dropped connections, as indicated by=
the high EAGAIN count.
I wouldn't be surprised if the 2.6.16 kernel isn't handling the reconne= ction correctly and propagating
EIO to the application.=A0 There's=A0been a fair amount of client side = work in the RPC=A0reconnection=20
code=A0recently .=A0 Can you try with a recent kernel?
A network trace and rpcdebug output would be invaluable when you're abl= e to reproduce this.
- ricardo
On Wed, Jun 4, 2008 at 3:45 PM, Ricardo Labiaga <[email protected]> wro= te:
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Does
/var/log/messagesshow any errors around the same time?=A0=20 In addition to the network trace and rpcdebug on the client, take a =
look at "nfsstat -d" on the filer.=20
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=A0Is the filer dropping the connection?=A0 Look for "dropped with EA=
GAIN" or "dropped from vol offline"=20
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in the output.=A0 This will help narrow down the problem.
So, sometimes when somebody deletes a lot of data (like the problem w=
e
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just observed),
the deleting host, and often other hosts, do report=A0 'filer not responding' in the logs.
However, operations that aren't happening in the delete dir, tend to work just fine (for example, iozone could be running and doing pretty well)).=A0 Further, the most recent time this happened, the host didn=
't
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report filer not responding.
This is the only EAGAN reference I see:
assist queue (queued, split mbufs, drop for EAGAIN) =3D (0, 64478612,=
94340)
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Dave
=20
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