Date: Tue, 17 Jan 2012 18:13:33 GMT From: Oliver <grimeton@gmx.net> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/164252: Journal Overflow Message-ID: <201201171813.q0HIDXnd059034@red.freebsd.org> Resent-Message-ID: <201201171820.q0HIK7vJ028691@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
>Number: 164252 >Category: kern >Synopsis: Journal Overflow >Confidential: no >Severity: critical >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Tue Jan 17 18:20:07 UTC 2012 >Closed-Date: >Last-Modified: >Originator: Oliver >Release: 9.0-RELEASE >Organization: n/a >Environment: FreeBSD test 9.0-RELEASE FreeBSD 9.0-RELEASE #0: Tue Jan 3 07:46:30 UTC 2012 root@farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64 >Description: I'm running some performance tests with iozone to see which filesystem/volume manager/raid version/... fits my needs best. After running the test on top of ZFS I destroyed the pool and created a freebsd-ufs partition on the "empty" drive. Here the output of "gpart show" => 34 976773101 ada0 GPT (465G) 34 976773101 1 freebsd-ufs (465G) I then labeled the partition ada0p1 with gjournal and created a new UFS2 on top of ada0p1.journal with journaling enabled (-J). Then the partiton was mounted and the iozone test was started inside. The command was "iozone -RA -g 16G". When starting to write 1GB of data in 64k chunks, the system crashed (check the - literally - screenshot attached). The system wasn't even able to write more than 2GB of the 8GB memory back to disk before it completly froze. I did the exact same test with this system and ZFS on the empty disk and everything worked as expected. I wasn't able to attach the screenshot, so I uploaded it here: http://img515.imageshack.us/img515/9622/gjournal.jpg If you have any questions just contact me. KR, Grimeton >How-To-Repeat: - Setup 9.0-RELEASE on one harddrive - Fetch ports, compile benchmarks/iozone - create a GPT scheme on another, empty, disk - setup a freebsd-ufs partition - label the partition with gjournal - create UFS2 on top of the journaled partiton with journaling enabled (-J) - mount the new fs to /test - cd to /test - start iozone like "iozone -Ra -g 16G" - wait and watch it crash >Fix: No clue. >Release-Note: >Audit-Trail: >Unformatted:
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201201171813.q0HIDXnd059034>