Messages in this thread | | | Date | Wed, 24 Sep 2008 22:14:01 +0100 | From | David Greaves <> | Subject | Re: Broken XFS partition |
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cc'ed xfs list
Willy Tarreau wrote: > On Wed, Sep 24, 2008 at 12:36:25PM +0200, Sylwester Gruszka wrote: >> Hello, >> >> I have a problem with XFS partition, it has broken down suddenly. I was doing >> no special things, just browsing www and suddenly my PC has restarted, after >> that I could not boot by PLD Th linux, after few usual kernel messages I get >> some matrix of numbers and it stops.
First thing is why? If you could boot then you could check the log to see if there was a disk error.
I suggest rebooting to an up-to-date rescue disk (ie 2008 vintage - mainly for the latest xfs utils) and using smartctl -a to look at the disk state.
Then run smartctl -t long /dev/sdX or some other disk check utility.
This will take a long time to run but should let you see if there are any bad blocks.
If so then I suggest using ddrescue to recover the disk to a spare/replacement.
Running xfs_repair on a failing disk will likely cause more trouble.
>> I realised that it is broken partition after I tried to repair system, I just >> could not mount this partition (using sysrescuecd), 'mount' gave me lots of >> weird numbers instead of mounting partition. It only do that way at first try, >> the second try always freezes mount program and nothing is happening. >> >> Here are some screenshots (mount using SystemRescueCd-1.1.0 so the kernel is >> propably 2.6.25.16): >> http://img397.imageshack.us/my.php?image=dsc01043ko6.jpg >> http://img179.imageshack.us/my.php?image=dsc01044yj4.jpg >> http://img158.imageshack.us/my.php?image=dsc01045sr3.jpg >> http://img221.imageshack.us/my.php?image=dsc01047js4.jpg >> >> PLD Linux Th booting: >> http://img530.imageshack.us/my.php?image=dsc01048mk3.jpg >> >> Suse booting: >> http://img87.imageshack.us/my.php?image=dsc01050as4.jpg >> Except this warning it boots normal. >> >> Now I'm running Suse and I tried xfs_check this partition but xfs_check is >> freezing too.
IIRC xfs_check used to be less robust than xfs_repair.
If the disk looks sound then running xfs_repair should help. Read the manpage. no-modify (-n) may be a good idea first time.
It *may* tell you to remount to replay the log. You should try this (mounting) but from what you've said it sounds like it won't work.
You may then try using the -L option which will discard the log/journal. (If you're nervous about this then wait for expert help - IMHO it's no big deal)
If this fails then you need expert help.
I have had a fair few disk failures over the years and this process is usually quick and painless :)
David
"Don't worry, you'll be fine; I saw it work in a cartoon once..."
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