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Date:      Fri, 26 May 2000 10:15:21 +0100
From:      "Darren Evans" <darren@profero.com>
To:        "Greg Lehey" <grog@lemis.com>
Cc:        <freebsd-questions@FreeBSD.ORG>
Subject:   RE: copying from a nfs mounted filesystem onto a vinum volume crashes
Message-ID:  <000301bfc6f2$eab74d90$a99d24d4@vindaloo.profero.com>
In-Reply-To: <20000526094609.C13702@freebie.lemis.com>

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Hi Greg,

sorry about the confusion.

The box running software RAID aka provided by vinum has runaway
processes.  Anything that read's/ writes /raid becomes a runaway
process.  I cannot kill it.

There's no kernel panic.  I've also tried a ktrace on the "runaway"
processes to see if there any system calls.  There is no activity.

No, the remote filesystem is not running under a RAID configuration.

/mnt is not a RAID point, it's a local mount point that i've NFS
mounted a remote filesystem onto.  Then tried to copy from there
onto the RAID filesystem.

Hope i'm making sense :)

thanks
Darren

-----Original Message-----
From: Greg Lehey [mailto:grog@lemis.com]
Sent: Friday, May 26, 2000 1:16 AM
To: Darren Evans
Cc: freebsd-questions@FreeBSD.ORG
Subject: Re: copying from a nfs mounted filesystem onto a vinum volume
crashes


[Format recovered--see http://www.lemis.com/email/email-format.html]

On Thursday, 25 May 2000 at 12:24:27 +0100, Darren Evans wrote:
> On Friday, 28 April 2000 at 20:32:44 +0530, Rahul Siddharthan wrote:
>> Hi,
>> We need to set up an NFS fileserver which will serve around 10-20
>> machines.  The hardware would preferably be Intel, for cost
>> reasons, though fairly high-end (say a Pentium III 550+ MHz, 256 MB
>> RAM, SCSI disks).  The expected exported volume would be perhaps
>> 50-60 GB.  Is it a good idea to export a vinum volume over NFS?
>
> Greg Wrote...
>> NFS doesn't know about the volume, it just knows about the file
>> system.  There's no reason why it shouldn't be on a Vinum volume.
>
> Hi Greg,
>
> what if a remote volume is nfs mounted not on the vinum volume
> (actually mounted on /mnt) and then a cp -r /mnt/software /raid/software/
> is performed.  /raid obviously being the vinum raid directory in a 1+0
> configuration.  This actually crashes our box.  I cannot SIGKILL the cp
> command and have to /sbin/reboot to restore the system.
>
> Are there any nfs/vinum issues at present?  Or am I being stupid?

You're at least being confusing.  Are you saying you /mnt is a
remotely mounted Vinum volume?  Which box crashes?  What does the dump
say?

> I'm running 3.4-STABLE/SMP with the latest kernel tree and 2 Adaptec
> aic7895 Ultra SCSI adapter controllers.

There are some issues with 3-STABLE, though none which would explain
this particular issue.  I've fixed a number of bugs in 4-STABLE and
-CURRENT, but it'll take me a few days to get them fixed and tested in
3-STABLE.

> cvsup'd yesterday with *default release=cvs tag=RELENG_3.  I'm led
> to believe this tag is correct for 3.4-STABLE but not 100% confident
> about that.

Yes, that's correct for 3-STABLE.

> Here's my vinum.conf

Looks OK.

> I've been reading / writing / deleting a 70 meg archive onto the
> RAID volume without any problems at all.  It's just NFS that causes
> the headache :-(

Strange.   Get me the dump info and I'll take a look.

Greg
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