[Bug 627272] New: jbd2 writes bocks to the hard disk every few seconds
http://bugzilla.novell.com/show_bug.cgi?id=627272 http://bugzilla.novell.com/show_bug.cgi?id=627272#c0 Summary: jbd2 writes bocks to the hard disk every few seconds Classification: openSUSE Product: openSUSE 11.3 Version: Final Platform: Other OS/Version: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel AssignedTo: kernel-maintainers@forge.provo.novell.com ReportedBy: sven.burmeister@gmx.net QAContact: qa@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; de; rv:1.9.2.8) Gecko/20100723 SUSE/3.6.8-0.1.1 Firefox/3.6.8 Via iotop I noticed that although there are no apps writing anything to the hard disk jbd2 constantly writes blocks to the hard disk, e.g.: Jul 31 11:05:57 linux-ly0d kernel: [ 3095.704089] jbd2/sda1-8(342): WRITE block 2638776 on sda1 Jul 31 11:05:57 linux-ly0d kernel: [ 3095.704217] jbd2/sda1-8(342): WRITE block 21286408 on sda1 Jul 31 11:05:57 linux-ly0d kernel: [ 3095.704231] jbd2/sda1-8(342): WRITE block 21286416 on sda1 Jul 31 11:05:57 linux-ly0d kernel: [ 3095.704242] jbd2/sda1-8(342): WRITE block 21286424 on sda1 Jul 31 11:05:57 linux-ly0d kernel: [ 3095.704249] jbd2/sda1-8(342): WRITE block 21286432 on sda1 Jul 31 11:05:57 linux-ly0d kernel: [ 3095.704256] jbd2/sda1-8(342): WRITE block 21286440 on sda1 Jul 31 11:05:57 linux-ly0d kernel: [ 3095.704262] jbd2/sda1-8(342): WRITE block 21286448 on sda1 Jul 31 11:05:57 linux-ly0d kernel: [ 3095.704269] jbd2/sda1-8(342): WRITE block 21286456 on sda1 Jul 31 11:05:57 linux-ly0d kernel: [ 3095.704276] jbd2/sda1-8(342): WRITE block 21286464 on sda1 Jul 31 11:05:57 linux-ly0d kernel: [ 3095.704283] jbd2/sda1-8(342): WRITE block 21286472 on sda1 Jul 31 11:05:57 linux-ly0d kernel: [ 3095.704290] jbd2/sda1-8(342): WRITE block 21286480 on sda1 Jul 31 11:05:57 linux-ly0d kernel: [ 3095.705002] jbd2/sda1-8(342): WRITE block 21286488 on sda1 Jul 31 11:06:00 linux-ly0d kernel: [ 3098.562085] flush-8:0(350): WRITE block 2638776 on sda1 Jul 31 11:06:00 linux-ly0d kernel: [ 3098.562368] rs:main Q:Reg(1431): dirtied inode 275189 (messages) on sda1 Jul 31 11:06:00 linux-ly0d kernel: [ 3098.562391] rs:main Q:Reg(1431): dirtied inode 275189 (messages) on sda1 Jul 31 11:06:00 linux-ly0d kernel: [ 3098.562402] rs:main Q:Reg(1431): dirtied inode 275189 (messages) on sda1 Jul 31 11:06:01 linux-ly0d kernel: [ 3099.704084] jbd2/sda5-8(808): WRITE block 805248 on sda5 Jul 31 11:06:01 linux-ly0d kernel: [ 3099.704229] jbd2/sda5-8(808): WRITE block 21291568 on sda5 Jul 31 11:06:01 linux-ly0d kernel: [ 3099.704242] jbd2/sda5-8(808): WRITE block 21291576 on sda5 Jul 31 11:06:01 linux-ly0d kernel: [ 3099.704790] jbd2/sda5-8(808): WRITE block 21291584 on sda5 Jul 31 11:06:03 linux-ly0d kernel: [ 3101.701086] jbd2/sda1-8(342): WRITE block 2638776 on sda1 Jul 31 11:06:03 linux-ly0d kernel: [ 3101.701187] jbd2/sda1-8(342): WRITE block 21286496 on sda1 Jul 31 11:06:03 linux-ly0d kernel: [ 3101.701201] jbd2/sda1-8(342): WRITE block 21286504 on sda1 Jul 31 11:06:03 linux-ly0d kernel: [ 3101.701701] jbd2/sda1-8(342): WRITE block 21286512 on sda1 Jul 31 11:06:08 linux-ly0d kernel: [ 3106.704112] jbd2/sda1-8(342): WRITE block 21286520 on sda1 Jul 31 11:06:08 linux-ly0d kernel: [ 3106.704172] jbd2/sda1-8(342): WRITE block 21286528 on sda1 Jul 31 11:06:08 linux-ly0d kernel: [ 3106.704480] jbd2/sda1-8(342): WRITE block 21286536 on sda1 Jul 31 11:06:10 linux-ly0d kernel: [ 3108.562064] flush-8:0(350): WRITE block 12586144 on sda1 Jul 31 11:06:10 linux-ly0d kernel: [ 3108.562099] flush-8:0(350): WRITE block 12657376 on sda1 Jul 31 11:06:10 linux-ly0d kernel: [ 3108.562114] flush-8:0(350): WRITE block 33554920 on sda1 Jul 31 11:06:10 linux-ly0d kernel: [ 3108.562159] flush-8:0(350): WRITE block 0 on sda1 Jul 31 11:06:10 linux-ly0d kernel: [ 3108.562231] flush-8:0(350): WRITE block 8 on sda1 Jul 31 11:06:10 linux-ly0d kernel: [ 3108.562243] flush-8:0(350): WRITE block 18840 on sda1 Jul 31 11:06:10 linux-ly0d kernel: [ 3108.562259] flush-8:0(350): WRITE block 12583040 on sda1 Jul 31 11:06:10 linux-ly0d kernel: [ 3108.562272] flush-8:0(350): WRITE block 12583664 on sda1 Jul 31 11:06:10 linux-ly0d kernel: [ 3108.562303] flush-8:0(350): WRITE block 12583992 on sda1 Jul 31 11:06:10 linux-ly0d kernel: [ 3108.562314] flush-8:0(350): WRITE block 12584000 on sda1 Jul 31 11:06:10 linux-ly0d kernel: [ 3108.562326] flush-8:0(350): WRITE block 12585984 on sda1 Jul 31 11:06:10 linux-ly0d kernel: [ 3108.562339] flush-8:0(350): WRITE block 12586136 on sda1 Jul 31 11:06:14 linux-ly0d kernel: [ 3112.704165] jbd2/sda1-8(342): WRITE block 21286544 on sda1 Jul 31 11:06:14 linux-ly0d kernel: [ 3112.704236] jbd2/sda1-8(342): WRITE block 21286552 on sda1 Jul 31 11:06:14 linux-ly0d kernel: [ 3112.704247] jbd2/sda1-8(342): WRITE block 21286560 on sda1 Jul 31 11:06:14 linux-ly0d kernel: [ 3112.704258] jbd2/sda1-8(342): WRITE block 21286568 on sda1 Jul 31 11:06:14 linux-ly0d kernel: [ 3112.704265] jbd2/sda1-8(342): WRITE block 21286576 on sda1 Jul 31 11:06:14 linux-ly0d kernel: [ 3112.704272] jbd2/sda1-8(342): WRITE block 21286584 on sda1 Jul 31 11:06:14 linux-ly0d kernel: [ 3112.704279] jbd2/sda1-8(342): WRITE block 21286592 on sda1 Jul 31 11:06:14 linux-ly0d kernel: [ 3112.704286] jbd2/sda1-8(342): WRITE block 21286600 on sda1 Jul 31 11:06:14 linux-ly0d kernel: [ 3112.704293] jbd2/sda1-8(342): WRITE block 21286608 on sda1 Jul 31 11:06:14 linux-ly0d kernel: [ 3112.704299] jbd2/sda1-8(342): WRITE block 21286616 on sda1 Jul 31 11:06:14 linux-ly0d kernel: [ 3112.704306] jbd2/sda1-8(342): WRITE block 21286624 on sda1 Jul 31 11:06:14 linux-ly0d kernel: [ 3112.704830] jbd2/sda1-8(342): WRITE block 21286632 on sda1 Jul 31 11:06:20 linux-ly0d kernel: [ 3118.562074] flush-8:0(350): WRITE block 0 on sda5 Jul 31 11:06:20 linux-ly0d kernel: [ 3118.562114] flush-8:0(350): WRITE block 8 on sda5 Jul 31 11:06:20 linux-ly0d kernel: [ 3118.562126] flush-8:0(350): WRITE block 8232 on sda5 Jul 31 11:06:20 linux-ly0d kernel: [ 3118.562161] flush-8:0(350): WRITE block 16777520 on sda5 Jul 31 11:06:20 linux-ly0d kernel: [ 3118.562173] flush-8:0(350): WRITE block 16786424 on sda5 Jul 31 11:06:20 linux-ly0d kernel: [ 3118.562241] flush-8:0(350): WRITE block 16786432 on sda5 Jul 31 11:06:20 linux-ly0d kernel: [ 3118.562960] jbd2/sda1-8(342): WRITE block 21286640 on sda1 Jul 31 11:06:20 linux-ly0d kernel: [ 3118.562974] jbd2/sda1-8(342): WRITE block 21286648 on sda1 Jul 31 11:06:20 linux-ly0d kernel: [ 3118.563563] jbd2/sda1-8(342): WRITE block 21286656 on sda1 Jul 31 11:06:25 linux-ly0d kernel: [ 3123.562120] flush-8:0(350): WRITE block 7553088 on sda1 Jul 31 11:06:25 linux-ly0d kernel: [ 3123.701084] jbd2/sda1-8(342): WRITE block 21286664 on sda1 Jul 31 11:06:25 linux-ly0d kernel: [ 3123.701119] jbd2/sda1-8(342): WRITE block 21286672 on sda1 Jul 31 11:06:25 linux-ly0d kernel: [ 3123.701534] jbd2/sda1-8(342): WRITE block 21286680 on sda1 Jul 31 11:06:30 linux-ly0d kernel: [ 3128.562114] flush-8:0(350): WRITE block 7247320 on sda1 Jul 31 11:06:30 linux-ly0d kernel: [ 3128.562263] flush-8:0(350): dirtied inode 275189 (messages) on sda1 Jul 31 11:06:30 linux-ly0d kernel: [ 3128.562284] flush-8:0(350): WRITE block 2638784 on sda1 Jul 31 11:06:30 linux-ly0d kernel: [ 3128.562301] flush-8:0(350): WRITE block 2638792 on sda1 Jul 31 11:06:30 linux-ly0d kernel: [ 3128.562374] flush-8:0(350): dirtied inode 525409 (.xsession-errors) on sda5 Jul 31 11:06:30 linux-ly0d kernel: [ 3128.562394] flush-8:0(350): WRITE block 1049088 on sda5 Jul 31 11:06:31 linux-ly0d kernel: [ 3129.701076] jbd2/sda1-8(342): WRITE block 2638792 on sda1 Jul 31 11:06:31 linux-ly0d kernel: [ 3129.701231] jbd2/sda1-8(342): WRITE block 21286688 on sda1 Jul 31 11:06:31 linux-ly0d kernel: [ 3129.701243] jbd2/sda1-8(342): WRITE block 21286696 on sda1 Jul 31 11:06:31 linux-ly0d kernel: [ 3129.701254] jbd2/sda1-8(342): WRITE block 21286704 on sda1 Jul 31 11:06:31 linux-ly0d kernel: [ 3129.701261] jbd2/sda1-8(342): WRITE block 21286712 on sda1 Jul 31 11:06:31 linux-ly0d kernel: [ 3129.701268] jbd2/sda1-8(342): WRITE block 21286720 on sda1 Jul 31 11:06:31 linux-ly0d kernel: [ 3129.701708] jbd2/sda1-8(342): WRITE block 21286728 on sda1 Jul 31 11:06:35 linux-ly0d kernel: [ 3133.701109] jbd2/sda5-8(808): WRITE block 21291592 on sda5 Jul 31 11:06:35 linux-ly0d kernel: [ 3133.701161] jbd2/sda5-8(808): WRITE block 21291600 on sda5 Jul 31 11:06:35 linux-ly0d kernel: [ 3133.701173] jbd2/sda5-8(808): WRITE block 21291608 on sda5 Jul 31 11:06:35 linux-ly0d kernel: [ 3133.701180] jbd2/sda5-8(808): WRITE block 21291616 on sda5 Jul 31 11:06:35 linux-ly0d kernel: [ 3133.701549] jbd2/sda5-8(808): WRITE block 21291624 on sda5 Jul 31 11:06:36 linux-ly0d kernel: [ 3134.704076] jbd2/sda1-8(342): WRITE block 2638792 on sda1 Jul 31 11:06:36 linux-ly0d kernel: [ 3134.704177] jbd2/sda1-8(342): WRITE block 21286736 on sda1 Jul 31 11:06:36 linux-ly0d kernel: [ 3134.704191] jbd2/sda1-8(342): WRITE block 21286744 on sda1 Jul 31 11:06:36 linux-ly0d kernel: [ 3134.704686] jbd2/sda1-8(342): WRITE block 21286752 on sda1 Jul 31 11:06:42 linux-ly0d kernel: [ 3140.704077] jbd2/sda1-8(342): WRITE block 2638792 on sda1 Jul 31 11:06:42 linux-ly0d kernel: [ 3140.704182] jbd2/sda1-8(342): WRITE block 21286760 on sda1 Jul 31 11:06:42 linux-ly0d kernel: [ 3140.704197] jbd2/sda1-8(342): WRITE block 21286768 on sda1 Jul 31 11:06:42 linux-ly0d kernel: [ 3140.704755] jbd2/sda1-8(342): WRITE block 21286776 on sda1 Jul 31 11:06:45 linux-ly0d kernel: [ 3143.562066] flush-8:0(350): WRITE block 25165968 on sda1 Jul 31 11:06:45 linux-ly0d kernel: [ 3143.562102] flush-8:0(350): WRITE block 25166144 on sda1 Jul 31 11:06:45 linux-ly0d kernel: [ 3143.562116] flush-8:0(350): WRITE block 25175424 on sda1 Jul 31 11:06:45 linux-ly0d kernel: [ 3143.562145] flush-8:0(350): WRITE block 25175440 on sda1 Jul 31 11:06:45 linux-ly0d kernel: [ 3143.562215] flush-8:0(350): WRITE block 25175448 on sda1 Jul 31 11:06:45 linux-ly0d kernel: [ 3143.562226] flush-8:0(350): WRITE block 25175456 on sda1 Jul 31 11:06:45 linux-ly0d kernel: [ 3143.562237] flush-8:0(350): WRITE block 25245280 on sda1 Jul 31 11:06:45 linux-ly0d kernel: [ 3143.562257] flush-8:0(350): WRITE block 0 on sda1 Jul 31 11:06:45 linux-ly0d kernel: [ 3143.562269] flush-8:0(350): WRITE block 8 on sda1 Jul 31 11:06:45 linux-ly0d kernel: [ 3143.562280] flush-8:0(350): WRITE block 8280 on sda1 Jul 31 11:06:45 linux-ly0d kernel: [ 3143.562311] flush-8:0(350): WRITE block 8945880 on sda1 Jul 31 11:06:48 linux-ly0d kernel: [ 3146.704083] jbd2/sda1-8(342): WRITE block 2638792 on sda1 Jul 31 11:06:48 linux-ly0d kernel: [ 3146.704227] jbd2/sda1-8(342): WRITE block 21286784 on sda1 Jul 31 11:06:48 linux-ly0d kernel: [ 3146.704240] jbd2/sda1-8(342): WRITE block 21286792 on sda1 Jul 31 11:06:48 linux-ly0d kernel: [ 3146.704634] jbd2/sda1-8(342): WRITE block 21286800 on sda1 I think the same bug is covered at https://bugs.launchpad.net/ubuntu/+source/linux/+bug/607560 Reproducible: Always -- Configure bugmail: 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https://bugzilla.novell.com/show_bug.cgi?id=627272 https://bugzilla.novell.com/show_bug.cgi?id=627272#c1 Jeff Mahoney <jeffm@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED CC| |jeffm@suse.com Resolution| |WONTFIX --- Comment #1 from Jeff Mahoney <jeffm@suse.com> 2012-03-05 23:03:23 UTC --- There are a few issues here. By enabling jbd2 debugging with syslog running, you're ensuring that there will _always_ be something write. When there's something to write, the commit thread will spin up after a certain timeout (5 seconds by default), to write it out to disk. Since 11.3 is out of maintenance, can you reproduce this with 11.4 or 12.1 without syslog enabled? If so, re-open this report with an updated product field. If necessary, we can use blktrace to figure out who the writers actually are. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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