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On 05/08/14 19:57, William Kenworthy wrote: |
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> On 05/07/14 07:51, Marc Joliet wrote: |
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>> Am Wed, 07 May 2014 06:56:12 +0800 |
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>> schrieb William Kenworthy <billk@×××××××××.au>: |
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>> |
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>>> On 05/06/14 18:18, Marc Joliet wrote: |
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>>>> Hi all, |
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>>>> |
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>>>> I've become increasingly motivated to convert to btrfs. From what I've seen, |
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>>>> it has become increasingly stable; enough so that it is apparently supposed to |
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>>>> become the default FS on OpenSuse in 13.2. |
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>>>> |
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>>>> I am motivated by various reasons: |
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>>> .... |
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>>> |
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scrub status for 20a18d40-e4e6-4e94-88e6-23eacd629cba |
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scrub started at Sat May 10 14:27:35 2014, running for 10520 seconds |
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total bytes scrubbed: 676.67GiB with 2 errors |
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error details: csum=2 |
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corrected errors: 0, uncorrectable errors: 2, unverified errors: 0 |
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and from /var/log/messages |
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May 10 16:15:26 moriah kernel: btrfs: checksum error at logical |
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486690582528 on dev /dev/mapper/vg1-backups, sector 965263992, root 5, |
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inode 10156876, offset 3179999232, length 4096, links 1 (path: |
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olympus/20140426/tree/mnt/data/vm/asterisk/asterisk_disk1.qcow2) |
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May 10 16:15:26 moriah kernel: btrfs: bdev /dev/mapper/vg1-backups errs: |
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wr 0, rd 14, flush 0, corrupt 11, gen 0 |
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May 10 16:15:26 moriah kernel: btrfs: unable to fixup (regular) error at |
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logical 486690582528 on dev /dev/mapper/vg1-backups |
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I'll delete the file(s) (its just one of numerous dated backups) |
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No event I can put it down to, nothing I can find in the logs - just |
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happens on an irregular basis! |
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Its btrfs using compress=LZO on an LVM2 partition after running a few |
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dirvish multiple backup sessions. Note that as I said in my original |
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email, "dirvish" really hammers a file system and only reiserfs seems to |
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withstand it though I have gotten errors with it in the past. Ive tried |
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ext4 (takes only a couple of backup sessions and its unrecoverable, |
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btrfs an occasional error with two complete losses of the |
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partition/filesystem since Christmas and reiserfs gets rare errors. |
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Note that hardware and other items have been changed over time so I |
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doubt its a specific problem there. |
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Not quite there yet ... |
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BillK |
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