Red Hat Bugzilla – Bug 439095
NFSv4: wait for CLOSE to return before trying to remove
Last modified: 2008-05-19 17:54:20 EDT
Description of problem:
NFSv4 issue with RHEL5 system.
Problem also is seen on Fedora 7 and 8 systems.
NFSv4 client does not wait for the Close call to return before issuing a remove
request. The result is the file is renamed to .nfsxxxxxx before being removed.
In a simple test program the close function was issued before the remove. In a
network trace you can see the close call, but the nfsv4 client sent a rename
before the close call had a chance to return.
Version-Release number of selected component (if applicable):
Kernel level: 2.6.18-53.1.14.el5
Simple C program:
Steps to Reproduce:
1.Mount NFSv4 share
2.Run test program to open,stat,close,remove file to mount point.
3.Unmount NFSv4 share
The file was not removed. It was renamed then removed after the test program
completed. Network trace showed these results.
> CALL CLOSE
> CALL LOOKUP <- rename to replace remove
> REPLY CLOSE
> REPLY LOOKUP
> CALL CLOSE
> REPLY CLOSE
> CALL REMOVE
> REPLY REMOVE
There is a fix for this problem by University of Michigan CITI NFSv4 team.
See Bugzilla: http://bugzilla.linux-nfs.org/show_bug.cgi?id=150
I just added that patch to CVS, it'll be in the next F7 build
The latest F8 kernel should already have that patch, and should be fixed.
kernel-126.96.36.199-85.fc7 has been submitted as an update for Fedora 7
Can you tell me the Fedora 8 kernel level that has this fix. I thought my F8
system was up2date.
(In reply to comment #3)
> Can you tell me the Fedora 8 kernel level that has this fix. I thought my F8
> system was up2date.
F8 is at kernel 2.6.24 which already has this fix.
kernel-188.8.131.52-85.fc7 has been pushed to the Fedora 7 testing repository. If problems still persist, please make note of it in this bug report.
If you want to test the update, you can install it with
su -c 'yum --enablerepo=updates-testing update kernel'. You can provide feedback for this update here: http://admin.fedoraproject.org/updates/F7/FEDORA-2008-2850
I applied Test-kernel "kernel-184.108.40.206-85.fc7".
I re-ran my tests and I could not reproduce the problem. seen with prior F7 kernels.
I am going to re-verify F8 does not have an issue with the silly rename.
When do you think EL5 will see this fix? I have bug 439093 open for the same issue .
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This issue has been resolved. Thanks you.
Thank you for reporting back. Closing bug as per comment #8.