Bug 148840 - Kernel Oops in rpc.mountd on NFS servers with a large number of NFS mounts
Kernel Oops in rpc.mountd on NFS servers with a large number of NFS mounts
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
i686 Linux
medium Severity high
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Assigned To: Dave Jones
Brian Brock
Depends On:
  Show dependency treegraph
Reported: 2005-02-15 21:06 EST by Stuart Anderson
Modified: 2015-01-04 17:17 EST (History)
2 users (show)

See Also:
Fixed In Version: 2.6.12-1.1372_FC3
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2005-07-28 20:37:06 EDT
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Regression: ---
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Documentation: ---
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
sunrpc patch (5.13 KB, patch)
2005-02-17 19:49 EST, Stuart Anderson
no flags Details | Diff

  None (edit)
Description Stuart Anderson 2005-02-15 21:06:23 EST
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.3)

Description of problem:
In a cluster of 290 dual-Xeon FC3 (2.6.10-1.760) machines we
where experiencing several kernel crashes (Oops) a day until
Neil Brown identified a critical (for us) patch in the RPC
auth cache.

The details of this discussion and a proof of principle patch may
be found starting with,

The proof of principle patch has now been running on our 290 node
cluster for over 6 days without a single crash.

The question here is how to get the cleaned up version of the patch
integrated into FC3 to avoid having to patch all of our systems.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Install FC3 on 290 linux machines
2. Have them all cross mount 1 filesystem from each other node
3. Run data intensive analysis jobs that read from all 290 filesystems
on every node
4. Wait a few hours for a kernel Oops.

Additional info:
Comment 1 Dave Jones 2005-02-15 21:12:08 EST
if you can attach the patch to this bugzilla, I'll take a look at
including it until it gets merged upstream.

Comment 2 Stuart Anderson 2005-02-17 19:49:18 EST
Created attachment 111190 [details]
sunrpc patch
Comment 3 Stuart Anderson 2005-03-24 13:17:42 EST
This patch is now in 2.6.12-rc1. Any idea when it might be merged into a FC3
Comment 4 Dave Jones 2005-07-15 14:05:37 EDT
An update has been released for Fedora Core 3 (kernel-2.6.12-1.1372_FC3) which
may contain a fix for your problem.   Please update to this new kernel, and
report whether or not it fixes your problem.

If you have updated to Fedora Core 4 since this bug was opened, and the problem
still occurs with the latest updates for that release, please change the version
field of this bug to 'fc4'.

Thank you.
Comment 5 Stuart Anderson 2005-07-16 22:48:55 EDT
Unfortunately, the SMP version of 2.6.12-1.1372_FC3 will not boot on these
computers, see,

Comment 6 Stuart Anderson 2005-07-28 20:37:06 EDT
I am now able to boot kernel-smp-2.6.12-1.1372_FC3 since
mkinitrd- was released today in test/update

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