http://bugzilla.novell.com/show_bug.cgi?id=557595 http://bugzilla.novell.com/show_bug.cgi?id=557595#c0 Summary: EXT3 blocked filesystem tasks (kjournald and pdflush) Classification: openSUSE Product: openSUSE 11.2 Version: Final Platform: x86-64 OS/Version: openSUSE 11.2 Status: NEW Severity: Critical Priority: P5 - None Component: Kernel AssignedTo: kernel-maintainers@forge.provo.novell.com ReportedBy: f+novell@congenio.de QAContact: qa@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.9.1.5) Gecko/20091102 Firefox/3.5.5 (.NET CLR 3.5.30729) Since installation of 11.2, I get entries in /var/log/warn like these: Nov 21 12:44:49 blob kernel: [41640.848029] INFO: task pdflush:47 blocked for mo re than 120 seconds. Nov 21 12:44:49 blob kernel: [41640.848037] "echo 0 > /proc/sys/kernel/hung_task _timeout_secs" disables this message. Nov 21 12:44:49 blob kernel: [41640.848049] ffff88011d5d58c0 0000000000000046 0 000000000000001 0000000000013a00 Nov 21 12:44:49 blob kernel: [41640.848056] ffff88011d5d27e8 0000000000013a00 0 000000000013a00 0000000000013a00 Nov 21 12:44:49 blob kernel: [41640.848063] 0000000000013a00 ffff88011d5d27e8 0 000000000013a00 0000000000013a00 Nov 21 12:44:49 blob kernel: [41640.848070] Call Trace: Nov 21 12:44:49 blob kernel: [41640.848082] [<ffffffff812021d1>] start_this_han dle+0x221/0x4e0 Nov 21 12:44:49 blob kernel: [41640.848090] [<ffffffff812026b6>] journal_start+ 0xd6/0x120 Nov 21 12:44:49 blob kernel: [41640.848097] [<ffffffff811ea79f>] ext3_journal_s tart_sb+0x3f/0x80 Nov 21 12:44:49 blob kernel: [41640.848104] [<ffffffff811dfd96>] ext3_journalle d_writepage+0xa6/0x1c0 Nov 21 12:44:49 blob kernel: [41640.848112] [<ffffffff81113611>] __writepage+0x 21/0x60 Nov 21 12:44:49 blob kernel: [41640.848119] [<ffffffff81114735>] write_cache_pa ges+0x215/0x520 Nov 21 12:44:49 blob kernel: [41640.848126] [<ffffffff81114a70>] generic_writep ages+0x30/0x50 Nov 21 12:44:49 blob kernel: [41640.848132] [<ffffffff81114aed>] do_writepages+ 0x5d/0x70 Nov 21 12:44:49 blob kernel: [41640.848139] [<ffffffff811813a0>] writeback_sing le_inode+0x1c0/0x480 Nov 21 12:44:49 blob kernel: [41640.848146] [<ffffffff81181db0>] generic_sync_s b_inodes+0x460/0x5a0 Nov 21 12:44:49 blob kernel: [41640.848152] [<ffffffff81181f35>] sync_sb_inodes +0x45/0x60 Nov 21 12:44:49 blob kernel: [41640.848158] [<ffffffff81182091>] writeback_inod es+0x81/0x150 Nov 21 12:44:49 blob kernel: [41640.848164] [<ffffffff8111388c>] wb_kupdate+0xc c/0x160 Nov 21 12:44:49 blob kernel: [41640.848170] [<ffffffff81115bac>] __pdflush+0x18 c/0x320 Nov 21 12:44:49 blob kernel: [41640.848176] [<ffffffff81115d9d>] pdflush+0x5d/0 x80 Nov 21 12:44:49 blob kernel: [41640.848183] [<ffffffff8108ec26>] kthread+0xb6/0 xc0 Nov 21 12:44:49 blob kernel: [41640.848190] [<ffffffff8100d70a>] child_rip+0xa/ 0x20 Nov 21 12:44:49 blob kernel: [41640.848218] INFO: task kjournald:6387 blocked fo r more than 120 seconds. Nov 21 12:44:49 blob kernel: [41640.848223] "echo 0 > /proc/sys/kernel/hung_task _timeout_secs" disables this message. Nov 21 12:44:49 blob kernel: [41640.848234] ffff880107d09d40 0000000000000046 f fff880117646138 0000000000013a00 Nov 21 12:44:49 blob kernel: [41640.848240] ffff8801176464e8 0000000000013a00 0 000000000013a00 0000000000013a00 Nov 21 12:44:49 blob kernel: [41640.848247] 0000000000013a00 ffff8801176464e8 0 000000000013a00 0000000000013a00 Nov 21 12:44:49 blob kernel: [41640.848253] Call Trace: Nov 21 12:44:49 blob kernel: [41640.848259] [<ffffffff81204547>] journal_commit _transaction+0x157/0xea0 Nov 21 12:44:49 blob kernel: [41640.848266] [<ffffffff81208f98>] kjournald+0xf8 /0x2c0 Nov 21 12:44:49 blob kernel: [41640.848272] [<ffffffff8108ec26>] kthread+0xb6/0 xc0 Nov 21 12:44:49 blob kernel: [41640.848278] [<ffffffff8100d70a>] child_rip+0xa/ 0x20 Reproducible: Always Steps to Reproduce: Heavy filesystem activity, e.g. backups. Actual Results: System freezes, log entries are shown. Expected Results: No freezes, no log entries. I have seen comments by Jens Axboe on this upstream. It seems to have to do with CFQ modifications. I hope that the filesystem does not get damaged by this. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.