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Bug 223806 - NFSv4 rpciod waiting on sync task! kernel 2.6.9-42
Summary: NFSv4 rpciod waiting on sync task! kernel 2.6.9-42
Alias: None
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel
Version: 4.4
Hardware: All
OS: Linux
Target Milestone: ---
: ---
Assignee: Jeff Layton
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 2007-01-22 15:56 UTC by Dannis
Modified: 2007-11-17 01:14 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2007-07-17 19:55:28 UTC
Target Upstream Version:

Attachments (Terms of Use)

Description Dannis 2007-01-22 15:56:29 UTC
NFSv4, often client crash one at three times per day and
I see this error in log "rpciod waiting on sync task!", 
It's not a really crash, but it's similar, because the user can't do nothing
and other users can't login to the station, but root can if Ctrl C is pushed at 
login. lsof doesn't work and tcpdump show nothing bad.

I see a similar problem on bugzilla and Steve Dickson said that it will be 
fixed in the upcoming release of RHEL4.
But I can't go to the bug 

Version-Release number of selected component (if applicable):
We are using NFSv4 on RedHat 4 Enterprise kernel 2.6.9-42
All clients and servers run on kernel 2.6.9-42, but servers and clusters are 64-

How reproducible:
I can reproduce the bug with the software subversion on a CVS folder.

Additional info:
Is it a problem with socket ?
Is it a problem with open lock file on NFS ?

Comment 1 Ronald Cole 2007-03-08 03:07:15 UTC
I'm seeing the same thing.  kernel 2.6.9-42.0.8.  NFSv4 server and clients are
64-bit.  And I can't go to that bug, either.  Sure wish there were at least a

Comment 2 Ronald Cole 2007-03-08 03:13:54 UTC
Oh yeah, the rpciod process on the client is in state "D".  Is there a known bug
where this process gets deadlocked?

Comment 3 Jeff Layton 2007-07-17 19:53:43 UTC
I believe I have a patch going into 4.6 that should fix this problem. If you
have a non-critical place to do so, please test the kernels on my people page
and let me know if they resolve the issue:

Comment 4 Jeff Layton 2007-07-17 19:55:28 UTC

*** This bug has been marked as a duplicate of 228292 ***

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