New: Permission denied trying to touch a file; happens randomly; both ext3 and GPFS
https://bugzilla.kernel.org/show_bug.cgi?id=75621
Bug ID: 75621
Summary: Permission denied trying to touch a file; happens
randomly; both ext3 and GPFS
Product: File System
Version: 2.5
Kernel Version: 3.0.13-0.27
Hardware: x86-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: ext3
Assignee: [email protected]
Reporter: [email protected]
Regression: NoHi,
I am running a benchmark against DB2 in my cluster with several ext3 (SSD) and GPFS file systems. After running the benchmark for around two days I noticed that one of the nodes rebooted and that was due to an error touching a file. The file was being touched by one of the HA monitors of Tivoli System Automation.
I immediately tried to reproduce the error by touching the file again manually. I touched the file a few times successfully, then out of the blue I got a "Permission denied" error. Right after that I kept touching the file and got no error message.
CPU utilization and I/O utilization were NOT at their peaks.
This error keeps happening randomly and therefore it is difficult to reproduce. It has happened both on a GPFS file system and an ext3 file system. Also I don't have much information on the internals of this problem.
Do you have suggestions on how to instrument/debug/monitor the error so that I can move on with the investigation and bring more info to this bug report?
Thanks
Phil
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[Bug 75621] Permission denied trying to touch a file; happens randomly; both ext3 and GPFS
https://bugzilla.kernel.org/show_bug.cgi?id=75621
Alan <[email protected]> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |[email protected]
--- Comment #1 from Alan <[email protected]> ---
Can you reproduce this on an upstream Linux system without GPFS, or does it need GPFS added ?
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[Bug 75621] Permission denied trying to touch a file; happens randomly; both ext3 and GPFS
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=75621
--- Comment #2 from plvbr <[email protected]> ---
I couldn't reproduce it ever again. I reproduced it two or three times then it never happened. But as I said it happens on an ext3 system as well. Not sure if it would still happen on ext3 if I didn't have GPFS compiled.
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[Bug 75621] Permission denied trying to touch a file; happens randomly; both ext3 and GPFS
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=75621
Alan <[email protected]> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |UNREPRODUCIBLE--- Comment #3 from Alan <[email protected]> ---
Thanks - given it was with 3rd party stuff loaded and not reproducible I'm not sure there is anything more we can do
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