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RE: Mismatch UUID

To: Eric Sandeen <sandeen@xxxxxxxxxxx>, Chris Murphy <lists@xxxxxxxxxxxxxxxxx>, Brian Foster <bfoster@xxxxxxxxxx>, "xfs@xxxxxxxxxxx" <xfs@xxxxxxxxxxx>
Subject: RE: Mismatch UUID
From: Robert Tench <robtench@xxxxxxxxxxx>
Date: Sat, 15 Nov 2014 13:58:14 +1100
Delivered-to: xfs@xxxxxxxxxxx
Importance: Normal
In-reply-to: <546692DA.9040105@xxxxxxxxxxx>
References: <BLU172-W9B4FE524F07D7E6D5592BC48C0@xxxxxxx> <6AB68617-0884-486D-8B96-8FD22DBC76D1@xxxxxxxxxxxxxxxxx>,<546692DA.9040105@xxxxxxxxxxx>
Hi all,

So I used mount command mount -o ro /dev/md4 /xfs  (after having made the xfs directory)

Returned with saying 'Structure needs cleaning'

Here are parts of the dmesg relating to the raid array and the attempted mounting
[   12.359728] EXT4-fs (sda7): mounting ext3 file system using the ext4 subsystem
[   12.361314] EXT4-fs (sda7): mounted filesystem with ordered data mode. Opts: (null)
[   14.382337]  sde: sde1 sde2 sde3 sde4 sde5 sde6 sde7 sde8 sde9 sde10
[   14.388298] sd 4:0:0:0: [sde] No Caching mode page found
[   14.388303] sd 4:0:0:0: [sde] Assuming drive cache: write through
[   14.388308] sd 4:0:0:0: [sde] Attached SCSI disk
[   14.676543] md: bind<sde8>
[   14.681538] md: kicking non-fresh sdd8 from array!
[   14.681544] md: unbind<sdd8>
[   14.700028] md: export_rdev(sdd8)
[   14.700055] md: kicking non-fresh sdb8 from array!
[   14.700063] md: unbind<sdb8>
[   14.708021] md: export_rdev(sdb8)
[   14.709145] md/raid1:md1: active with 3 out of 5 mirrors
[   14.709165] md1: detected capacity change from 0 to 863567872
[   14.713570] md: bind<sde5>
[   14.713663]  md1: unknown partition table
[   14.715628] md: kicking non-fresh sdd5 from array!
[   14.715635] md: unbind<sdd5>
[   14.724074] md: export_rdev(sdd5)
[   14.724095] md: kicking non-fresh sdb5 from array!
[   14.724102] md: unbind<sdb5>
[   14.736021] md: export_rdev(sdb5)
[   14.737203] md/raid1:md3: active with 3 out of 5 mirrors
[   14.737222] md3: detected capacity change from 0 to 262078464
[   14.739508]  md3: unknown partition table
[   14.742037] md: bind<sde2>
[   14.748793] md: bind<sde9>
[   14.749250] md/raid:md4: device sde2 operational as raid disk 4
[   14.749252] md/raid:md4: device sdd2 operational as raid disk 3
[   14.749254] md/raid:md4: device sda2 operational as raid disk 0
[   14.749255] md/raid:md4: device sdb2 operational as raid disk 1
[   14.749257] md/raid:md4: device sdc2 operational as raid disk 2
[   14.749707] md/raid:md4: allocated 0kB
[   14.749814] md/raid:md4: raid level 5 active with 5 out of 5 devices, algorithm 2
[   14.749815] RAID conf printout:
[   14.749816]  --- level:5 rd:5 wd:5
[   14.749818]  disk 0, o:1, dev:sda2
[   14.749820]  disk 1, o:1, dev:sdb2
[   14.749821]  disk 2, o:1, dev:sdc2
[   14.749823]  disk 3, o:1, dev:sdd2
[   14.749824]  disk 4, o:1, dev:sde2
[   14.749846] md4: detected capacity change from 0 to 11994073661440
[   14.769544] md: kicking non-fresh sdd9 from array!
[   14.769553] md: unbind<sdd9>
[   14.770503]  md4: unknown partition table
[   14.784024] md: export_rdev(sdd9)
[   14.784040] md: kicking non-fresh sdb9 from array!
[   14.784045] md: unbind<sdb9>
[   14.796026] md: export_rdev(sdb9)
[   14.797259] md/raid1:md2: active with 3 out of 5 mirrors
[   14.797278] md2: detected capacity change from 0 to 896466944
[   14.804201]  md2: unknown partition table
[   15.536766] EXT4-fs (sdb8): mounting ext3 file system using the ext4 subsystem
[   15.556508] EXT4-fs (sdb8): mounted filesystem with ordered data mode. Opts: (null)
[   15.575379] EXT4-fs (sdb9): mounting ext3 file system using the ext4 subsystem
[   15.581829] EXT4-fs (sdb9): mounted filesystem with ordered data mode. Opts: (null)
[   16.044429] sd 5:0:0:0: [sdf] 60499968 512-byte logical blocks: (30.9 GB/28.8 GiB)
[   16.045044] sd 5:0:0:0: [sdf] Write Protect is off
[   16.045049] sd 5:0:0:0: [sdf] Mode Sense: 23 00 00 00
[   16.045669] sd 5:0:0:0: [sdf] No Caching mode page found
[   16.045673] sd 5:0:0:0: [sdf] Assuming drive cache: write through
[   16.049167] sd 5:0:0:0: [sdf] No Caching mode page found
[   16.049172] sd 5:0:0:0: [sdf] Assuming drive cache: write through
[   16.072442]  sdf: sdf1
[   16.075294] sd 5:0:0:0: [sdf] No Caching mode page found
[   16.075299] sd 5:0:0:0: [sdf] Assuming drive cache: write through
[   16.075303] sd 5:0:0:0: [sdf] Attached SCSI removable disk
[   38.533458] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[   39.643476] FAT-fs (sdf1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[   40.485718] EXT4-fs (loop1): mounting ext2 file system using the ext4 subsystem
[   40.489678] EXT4-fs (loop1): warning: mounting unchecked fs, running e2fsck is recommended
[   40.495984] EXT4-fs (loop1): mounted filesystem without journal. Opts: (null)
[   88.354507] Adding 255932k swap on /dev/sdb5.  Priority:-1 extents:1 across:255932k FS
[   88.359216] Adding 255932k swap on /dev/sdd5.  Priority:-2 extents:1 across:255932k FS


[ 1636.143467] systemd-hostnamed[20496]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!
[ 1918.676658] SGI XFS with ACLs, security attributes, realtime, large block/inode numbers, no debug enabled
[ 1925.660198] XFS (md4): Mounting Filesystem
[ 1925.824734] XFS (md4): log has mismatched uuid - can't recover
[ 1925.824748] XFS (md4): failed to find log head
[ 1925.824751] XFS (md4): log mount/recovery failed: error 117
[ 1925.824793] XFS (md4): log mount failed
[ 2049.523180] systemd-hostnamed[21362]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!
[20679.813021] XFS (md4): Mounting Filesystem
[20679.884528] XFS (md4): log has mismatched uuid - can't recover
[20679.884542] XFS (md4): failed to find log head
[20679.884545] XFS (md4): log mount/recovery failed: error 117
[20679.884590] XFS (md4): log mount failed
[21024.505390] XFS (md4): Mounting Filesystem
[21024.601886] XFS (md4): log has mismatched uuid - can't recover
[21024.601900] XFS (md4): failed to find log head
[21024.601903] XFS (md4): log mount/recovery failed: error 117
[21024.601946] XFS (md4): log mount failed
[21672.562447] XFS (md4): Mounting Filesystem
[21672.617195] XFS (md4): log has mismatched uuid - can't recover
[21672.617209] XFS (md4): failed to find log head
[21672.617212] XFS (md4): log mount/recovery failed: error 117
[21672.617246] XFS (md4): log mount failed

Rob

> Date: Fri, 14 Nov 2014 17:40:10 -0600
> From: sandeen@xxxxxxxxxxx
> To: lists@xxxxxxxxxxxxxxxxx; robtench@xxxxxxxxxxx
> CC: xfs@xxxxxxxxxxx
> Subject: Re: Mismatch UUID
>
> On 11/14/14 4:31 PM, Chris Murphy wrote:
>
> > It’s very good to ask instead of haphazardly trying things. Trying to
> > normally mount the file system should be safe; and then use dmesg to
> > check for kernel messages. The xfs kernel code is responsible for log
> > replay and making most kinds of repairs, anything it can’t deal with
> > will be reported as a kernel message. If mount fails, report kernel
> > xfs related messages, and also the results from xfs_check -n.
>
> xfs_repair -n
>
> xfs_check is deprecated and has no -n option ;)
>
> -Eric


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