From: Michael Monnerie <michael.monnerie@is.it-management.at>
To: xfs@oss.sgi.com
Subject: Re: badly destroyed XFS (on LVM) - how to repair?
Date: Sat, 12 May 2012 19:33:04 +0200 [thread overview]
Message-ID: <3096724.ecFtoeOHo8@saturn> (raw)
In-Reply-To: <1763478.Vy9F5bcWiZ@saturn>
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Another strange thing:
I now started a "dd if=/dev/dm-0 of=/dev/null bs=1024k".
For the first seconds(!), it did nothing, I thought it would hang.
Then it started, but it's reading in a strange way:
Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util
xvdg 139378,24 0,00 15893,61 0,00 77640,82 0,00 9,77 35,96 2,26 0,06 99,88
xvda 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00
xvde 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00
xvdb 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00
dm-0 0,00 0,00 155241,52 0,00 77620,76 0,00 1,00 353,51 2,28 0,01 99,88
Very many I/Os and very slow KB/s. What could cause that?
lv readahead is 1536 sectors, that's 128KB per data disk (a 7 disk RAID-5) and should be OK.
--
mit freundlichen Grüssen,
Michael Monnerie, Ing. BSc
it-management Internet Services: Protéger
http://proteger.at [gesprochen: Prot-e-schee]
Tel: +43 660 / 415 6531
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next prev parent reply other threads:[~2012-05-12 17:33 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-12 12:49 badly destroyed XFS (on LVM) - how to repair? Michael Monnerie
2012-05-12 13:43 ` Emmanuel Florac
2012-05-12 17:33 ` Michael Monnerie [this message]
2012-05-14 14:54 ` Michael Monnerie
2012-05-14 15:12 ` Eric Sandeen
2012-05-15 1:13 ` Michael Monnerie
-- strict thread matches above, loose matches on Subject: below --
2012-05-12 17:16 Michael Monnerie
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