Bug 678153

Summary: System crash with ext4 and heavy load
Product: Red Hat Enterprise Linux 5 Reporter: Shad L. Lords <slords>
Component: kernelAssignee: Red Hat Kernel Manager <kernel-mgr>
Status: CLOSED UPSTREAM QA Contact: Red Hat Kernel QE team <kernel-qe>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 5.5.zCC: rwheeler
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-02-26 16:56:09 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description Flags
screen capture of crash none

Description Shad L. Lords 2011-02-16 22:14:25 UTC
Created attachment 479222 [details]
screen capture of crash

Description of problem:

When running a heavy load (db2 load) against several 1TB ext4 partitions the box will consistently hang/crash.

How reproducible:

6 times over 2 days

Actual results:

See screenshot.

Expected results:

System doesn't crash

Additional info:

When runing the exact same load using xfs instead of ext4 the system has no issues.

Comment 1 Ric Wheeler 2011-02-17 15:01:59 UTC
Please work with Red Hat support to open a ticket - they can help us collect information that is needed for debugging issues.

Thanks!

Comment 2 Shad L. Lords 2011-02-17 15:30:18 UTC
Don't have a RHEL support contract and not sure how to contact/work with Red Hat support.  Am willing to do what I can to help you reproduce this as fixing it will benefit all.

This was experienced on a CentOS box.

Comment 3 Ric Wheeler 2011-02-17 16:07:29 UTC
Red Hat bugzilla is normally used to help our support people work with our customers.

If you don't have a subscription, I think that the best thing would be to have you report issue to the right upstream mailing lists (linux-ext4 in this case).

For those reports, please put in lots of detail - type of machine (cpu type & count, DRAM amount, type of storage) - and the backtrace from the crash.

Thanks!