Red Hat Bugzilla – Bug 139374
ext3 data=journal with external journal deadlock
Last modified: 2007-11-30 17:07:05 EST
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux ppc; rv:1.7.3) Gecko/20041014 Firefox/0.10.1 Description of problem: There was a deadlock bug in full data journaling for ext3 in 2.4.21 that got fixed aroud 2.4.23 iirc. This bug still exists in RHEL kernel and is making it unusuable for busy mailservers, for example. Version-Release number of selected component (if applicable): kernel-2.4.21-20.EL How reproducible: Always Steps to Reproduce: 1.Configure ext3 with data=journal and large external journal 2.Run bonnie++ on it with data size about 10 times the amount of ram Actual Results: System reproducibly freezes, usualy in the "writing inteligently" stage. Expected Results: Bonnie++ run should finish as expected. Additional info: I tested this on single cpu machine with 384mb ram, uniprocessor kernel, system on ide drive, ext3 partition in question on one scsi drive and its external journal on another scsi drive. The external journal I created is 400mb.
This bug is filed against RHEL 3, which is in maintenance phase. During the maintenance phase, only security errata and select mission critical bug fixes will be released for enterprise products. Since this bug does not meet that criteria, it is now being closed. For more information of the RHEL errata support policy, please visit: http://www.redhat.com/security/updates/errata/ If you feel this bug is indeed mission critical, please contact your support representative. You may be asked to provide detailed information on how this bug is affecting you.