Bug 499840 - nfsv4recoverydir proc file unreadable
Summary: nfsv4recoverydir proc file unreadable
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel
Version: 5.4
Hardware: All
OS: Linux
low
low
Target Milestone: rc
: ---
Assignee: Evan McNabb
QA Contact: Red Hat Kernel QE team
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2009-05-08 14:25 UTC by Evan McNabb
Modified: 2011-09-22 06:34 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2009-09-02 08:56:56 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
RHEL5 backport of upstream patch (1.52 KB, patch)
2009-05-10 21:23 UTC, Evan McNabb 		no flags Details | Diff
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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2009:1243 0 normal SHIPPED_LIVE Important: Red Hat Enterprise Linux 5.4 kernel security and bug fix update 2009-09-01 08:53:34 UTC

Description Evan McNabb 2009-05-08 14:25:12 UTC 
Description of problem:

The file /proc/fs/nfsd/nfsv4recoverydir is not readable on RHEL5. I found this problem while running the kernel/fs/proc/proc01 LTP test on 2.6.18-141, although it applies to previous kernels too.

# uname -a
Linux myhost 2.6.18-141.el5 #1 SMP Fri Apr 24 17:46:35 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux
# service nfs start
. . .
# cat /proc/fs/nfsd/nfsv4recoverydir 
cat: /proc/fs/nfsd/nfsv4recoverydir: Invalid argument

On Fedora 11 beta it works correctly:

# service nfs start
. . .
# cat /proc/fs/nfsd/nfsv4recoverydir
/var/lib/nfs/v4recovery

I believe this is the upstream fix:
http://linux-nfs.org/pipermail/nfsv4/2008-June/008709.html
Comment 3 Evan McNabb 2009-05-10 21:23:55 UTC 
Created attachment 343301 [details]
RHEL5 backport of upstream patch

Jeff, here's a backport of the patch that seems to fix the issue. I only pulled the chunks that are needed to read nfsv4recoverydir. Please let me know if I missed anything.
Comment 4 Jeff Layton 2009-05-14 15:23:01 UTC 
Patch looks reasonable to me -- if you've tested it and feel comfortable with it, go ahead and post it to RHKL.

You might as well own the BZ too, fwiw...
Comment 6 RHEL Program Management 2009-05-15 17:39:07 UTC 
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.
Comment 7 Don Zickus 2009-05-19 19:46:49 UTC 
in kernel-2.6.18-149.el5
You can download this test kernel from http://people.redhat.com/dzickus/el5

Please do NOT transition this bugzilla state to VERIFIED until our QE team
has sent specific instructions indicating when to do so.  However feel free
to provide a comment indicating that this fix has been verified.
Comment 11 errata-xmlrpc 2009-09-02 08:56:56 UTC 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2009-1243.html
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