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From: Dave Chinner <david@fromorbit.com>
To: Ole Tange <tange@binf.ku.dk>
Cc: xfs@oss.sgi.com
Subject: Re: xfs_repair segfaults
Date: Fri, 1 Mar 2013 22:17:01 +1100	[thread overview]
Message-ID: <20130301111701.GB23616@dastard> (raw)
In-Reply-To: <CANU9nTnvJS50vdQv2K0gKHZPvzzH5EY1qpizJNsqUobrr2juDA@mail.gmail.com>

On Thu, Feb 28, 2013 at 04:22:08PM +0100, Ole Tange wrote:
> I forced a RAID online. I have done that before and xfs_repair
> normally removes the last hour of data or so, but saves everything
> else.

Why did you need to force it online?

> Today that did not work:
> 
> /usr/local/src/xfsprogs-3.1.10/repair# ./xfs_repair -n /dev/md5p1
> Phase 1 - find and verify superblock...
> Phase 2 - using internal log
>         - scan filesystem freespace and inode maps...
> flfirst 232 in agf 91 too large (max = 128)

Can you run:

# xfs_db -c "agf 91" -c p /dev/md5p1

And post the output?

> # cat /proc/partitions |grep md5
>    9        5 125024550912 md5
>  259        0 107521114112 md5p1
>  259        1 17503434752 md5p2

Ouch.

> # cat /proc/mdstat
> Personalities : [raid0] [raid6] [raid5] [raid4]
> md5 : active raid0 md1[0] md4[3] md3[2] md2[1]
>       125024550912 blocks super 1.2 512k chunks
> 
> md1 : active raid6 sdd[1] sdi[9] sdq[13] sdau[7] sdt[10] sdg[5] sdf[4] sde[2]
>       31256138752 blocks super 1.2 level 6, 128k chunk, algorithm 2
> [10/8] [_UU_UUUUUU]
>       bitmap: 2/2 pages [8KB], 1048576KB chunk

There are 2 failed devices in this RAID6 lun - i.e. no redundancy -
and no rebuild in progress. Is this related to why you had to force
the RAID online?

> md4 : active raid6 sdo[13] sdu[9] sdad[8] sdh[7] sdc[6] sds[11]
> sdap[3] sdao[2] sdk[1]
>       31256138752 blocks super 1.2 level 6, 128k chunk, algorithm 2
> [10/8] [_UUUU_UUUU]
>       [>....................]  recovery =  2.1% (84781876/3907017344)
> finish=2196.4min speed=29003K/sec
>       bitmap: 2/2 pages [8KB], 1048576KB chunk

and 2 failed devices here, too, with a rebuild underway that will
take the best part of 2 days to complete...

So, before even trying to diagnose the xfs_repair problem, can you
tell us what actually went wrong with your md devices?

Cheers,

Dave.
-- 
Dave Chinner
david@fromorbit.com

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  parent reply	other threads:[~2013-03-01 11:17 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-28 15:22 xfs_repair segfaults Ole Tange
2013-02-28 18:48 ` Eric Sandeen
2013-03-01  9:37   ` Ole Tange
2013-03-01 16:46     ` Eric Sandeen
2013-03-04  9:00       ` Ole Tange
2013-03-04 15:20         ` Eric Sandeen
2013-03-08 10:21           ` Ole Tange
2013-03-08 20:32             ` Eric Sandeen
2013-03-12 10:41               ` Ole Tange
2013-03-12 14:40                 ` Eric Sandeen
2013-03-12 11:37             ` Ole Tange
2013-03-12 14:47               ` Eric Sandeen
2013-03-01 11:17 ` Dave Chinner [this message]
2013-03-01 12:24   ` Ole Tange
2013-03-01 20:53     ` Dave Chinner
2013-03-04  9:03       ` Ole Tange
2013-03-04 23:23         ` Dave Chinner
2013-03-08 10:09           ` Ole Tange
2013-03-01 22:14 ` Eric Sandeen
2013-03-01 22:31   ` Dave Chinner
2013-03-01 22:32     ` Eric Sandeen
2013-03-01 23:55       ` Eric Sandeen
2013-03-04 12:47       ` Ole Tange
2013-03-04 15:17         ` Eric Sandeen
2013-03-04 23:11           ` Dave Chinner
  -- strict thread matches above, loose matches on Subject: below --
2013-05-06 12:06 Xfs_repair segfaults Filippo Stenico
2013-05-06 14:34 ` Eric Sandeen
2013-05-06 15:00   ` Filippo Stenico
     [not found]     ` <CADNx=Kv0bt3fNGW8Y24GziW9MOO-+b7fBGub4AYP70b5gAegxw@mail.gmail.com>
2013-05-07 13:20       ` Eric Sandeen
2013-05-07 13:36         ` Filippo Stenico
2013-05-07 18:20           ` Filippo Stenico
2013-05-08 17:30             ` Filippo Stenico
2013-05-08 17:42               ` Filippo Stenico
2013-05-08 23:39               ` Dave Chinner
2013-05-09 15:11                 ` Filippo Stenico
2013-05-09 17:22                   ` Filippo Stenico
2013-05-09 22:39                     ` Dave Chinner
     [not found]                       ` <CADNx=KuQjMNHUk6t0+hBZ5DN6s=RXqrPEjeoSxpBta47CJoDgQ@mail.gmail.com>
2013-05-10 11:00                         ` Filippo Stenico
2013-05-09 22:37                   ` Dave Chinner

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