Messages in this thread | | | Date | Tue, 18 Oct 2011 11:04:36 +0200 | From | Gábor Lénárt <> | Subject | Re: barrier-based sync failed - disabling barriers |
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On Tue, Oct 18, 2011 at 10:11:59AM +0200, Gábor Lénárt wrote: > I have a kernel log entry I've never seen before: > > JBD: barrier-based sync failed on cciss!c0d0p3-8 - disabling barriers > JBD: barrier-based sync failed on cciss!c0d0p1-8 - disabling barriers > > Should I worry? Can it be blamed for the poor I/O performance? How can I > solve this problem? Even if it doesn't mean too much (what I should > worry about), it's a bit annoying (as always) to see odd messages. > > The ext4 filesystems were created by the installer of an older (ubuntu) > distribution, I guess, it can cause problems after the upgrade. Can I > convert/modify the filesystem (like with tune2fs) not to have these > messages and problem?
Sorry, I forgot to give some information:
Linux nopea1 2.6.32-34-server #77-Ubuntu SMP Tue Sep 13 20:54:38 UTC 2011 x86_64 GNU/Linux Ubuntu 10.04.3 LTS "lucid" Hardware name: ProLiant DL360 G5 /dev/cciss/c0d0: (Smart Array E200i) RAID 1 Volume 0 status: OK.
Filesystem volume name: / Last mounted on: / Filesystem UUID: 06a107ec-cf2a-4dca-bb95-ab7745402f5b Filesystem magic number: 0xEF53 Filesystem revision #: 1 (dynamic) Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize Filesystem flags: signed_directory_hash Default mount options: (none) Filesystem state: clean Errors behavior: Continue Filesystem OS type: Linux Inode count: 610800 Block count: 2441876 Reserved block count: 0 Free blocks: 2079823 Free inodes: 577158 First block: 0 Block size: 4096 Fragment size: 4096 Reserved GDT blocks: 596 Blocks per group: 32768 Fragments per group: 32768 Inodes per group: 8144 Inode blocks per group: 509 Flex block group size: 16 Filesystem created: Wed Oct 12 17:24:42 2011 Last mount time: Tue Oct 18 10:01:29 2011 Last write time: Wed Oct 12 19:39:53 2011 Mount count: 6 Maximum mount count: 35 Last checked: Wed Oct 12 17:24:42 2011 Check interval: 15552000 (6 months) Next check after: Mon Apr 9 17:24:42 2012 Lifetime writes: 833 MB Reserved blocks uid: 0 (user root) Reserved blocks gid: 0 (group root) First inode: 11 Inode size: 256 Required extra isize: 28 Desired extra isize: 28 Journal inode: 8 Default directory hash: half_md4 Directory Hash Seed: 0914f7b2-bfa3-4718-811d-fc02c7361b32 Journal backup: inode blocks Journal features: journal_incompat_revoke Journal size: 128M Journal length: 32768 Journal sequence: 0x0000055a Journal start: 1
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