Bug#782012: xfs_admin: Changing UUID destroys Filesystem

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Package: xfsprogs
Version: 3.2.1
Severity: normal

Dear Maintainer,

after changing the UUID of an existing not mounted XFS-V5 Filesystem it can't be
mounted anymore. xfs_repair fix this, but the remaining filsystem is empty.
Here is what happend in detail:

root@vger:~# xfs_admin -u /dev/mapper/rvg-sav 
UUID = a2320a38-0c83-478e-bc31-4bc3fb253fdd

root@vger:~# xfs_admin -U a2320a38-0c83-478e-bc31-4bc3fb253fde /dev/mapper/rvg-sav
Clearing log and setting UUID
writing all SBs
new UUID = a2320a38-0c83-478e-bc31-4bc3fb253fde

root@vger:~# mount /dev/mapper/rvg-sav /tmp/sav
mount: mount /dev/mapper/rvg-sav on /tmp/sav failed: Structure needs cleaning

[  696.826336] XFS (dm-5): Mounting V5 Filesystem
[  696.866945] XFS (dm-5): xfs_iread: validation failed for inode 96 failed
[  696.867000] ffff8800b9981000: 49 4e 41 ed 03 01 00 00 00 00 00 00 00 00 00 00  INA.............
[  696.867053] ffff8800b9981010: 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00 00  ................
[  696.867105] ffff8800b9981020: 55 22 7a 21 2c 67 43 83 55 22 79 cf 08 76 b6 6a  U"z!,gC.U"y..v.j
[  696.867157] ffff8800b9981030: 55 22 79 cf 08 76 b6 6a 00 00 00 00 00 00 00 35  U"y..v.j.......5
[  696.867242] XFS (dm-5): Internal error xfs_iread at line 392 of file /build/linux-SAvLSw/linux-3.16.7-ckt7/fs/xfs/xfs_inode_buf.c.  Caller xfs_iget+0x24b/0x690 [xfs]
[  696.867322] CPU: 1 PID: 1761 Comm: mount Not tainted 3.16.0-4-amd64 #1 Debian 3.16.7-ckt7-1
[  696.867324] Hardware name: LENOVO 7666A26/7666A26, BIOS 7NETC0WW (2.20 ) 03/12/2009
[  696.867326]  0000000000000001 ffffffff81509e7c ffff8801365d6000 ffffffffa023b5cb
[  696.867330]  00000188b87b4a40 ffffffffa0240f6b ffff8800ba194400 ffff8801365d6000
[  696.867333]  0000000000000075 0000000000000000 ffffffffa0286aea ffffffffa0240f6b
[  696.867337] Call Trace:
[  696.867345]  [<ffffffff81509e7c>] ? dump_stack+0x41/0x51
[  696.867358]  [<ffffffffa023b5cb>] ? xfs_corruption_error+0x5b/0x80 [xfs]
[  696.867372]  [<ffffffffa0240f6b>] ? xfs_iget+0x24b/0x690 [xfs]
[  696.867389]  [<ffffffffa0286aea>] ? xfs_iread+0xea/0x400 [xfs]
[  696.867402]  [<ffffffffa0240f6b>] ? xfs_iget+0x24b/0x690 [xfs]
[  696.867415]  [<ffffffffa0240f6b>] ? xfs_iget+0x24b/0x690 [xfs]
[  696.867429]  [<ffffffffa024d270>] ? xfs_parseargs+0xb80/0xb80 [xfs]
[  696.867444]  [<ffffffffa024a397>] ? xfs_mountfs+0x3e7/0x700 [xfs]
[  696.867458]  [<ffffffffa024d503>] ? xfs_fs_fill_super+0x293/0x310 [xfs]
[  696.867463]  [<ffffffff811aae46>] ? mount_bdev+0x1a6/0x1e0
[  696.867467]  [<ffffffff811ab6d4>] ? mount_fs+0x34/0x1a0
[  696.867472]  [<ffffffff811c4f22>] ? vfs_kern_mount+0x62/0x110
[  696.867476]  [<ffffffff811c77aa>] ? do_mount+0x23a/0xaf0
[  696.867480]  [<ffffffff81157c8d>] ? memdup_user+0x3d/0x70
[  696.867484]  [<ffffffff811c8351>] ? SyS_mount+0x81/0xc0
[  696.867488]  [<ffffffff8150ff6d>] ? system_call_fast_compare_end+0x10/0x15
[  696.867490] XFS (dm-5): Corruption detected. Unmount and run xfs_repair
[  696.867529] XFS (dm-5): failed to read root inode

root@vger:~# xfs_repair /dev/mapper/rvg-sav 
Phase 1 - find and verify superblock...
Phase 2 - using internal log
        - zero log...
        - scan filesystem freespace and inode maps...
Metadata corruption detected at block 0x800008/0x1000
Metadata corruption detected at block 0x8/0x1000
Metadata corruption detected at block 0x1800008/0x1000
Metadata corruption detected at block 0x800010/0x1000
bad uuid a2320a38-0c83-478e-bc31-4bc3fb253fdd for agf 1
bad uuid a2320a38-0c83-478e-bc31-4bc3fb253fdd for agi 1
reset bad agf for ag 1
reset bad agi for ag 1
Metadata corruption detected at block 0x1000008/0x1000
Metadata corruption detected at block 0x1800010/0x1000
bad uuid a2320a38-0c83-478e-bc31-4bc3fb253fdd for agf 3
bad uuid a2320a38-0c83-478e-bc31-4bc3fb253fdd for agi 3
reset bad agf for ag 3
reset bad agi for ag 3
Metadata corruption detected at block 0x10/0x1000
bad uuid a2320a38-0c83-478e-bc31-4bc3fb253fdd for agf 0
bad uuid a2320a38-0c83-478e-bc31-4bc3fb253fdd for agi 0
reset bad agf for ag 0
reset bad agi for ag 0
Metadata corruption detected at block 0x800018/0x1000
Metadata corruption detected at block 0x1000010/0x1000
bad uuid a2320a38-0c83-478e-bc31-4bc3fb253fdd for agf 2
bad uuid a2320a38-0c83-478e-bc31-4bc3fb253fdd for agi 2
reset bad agf for ag 2
reset bad agi for ag 2
Metadata corruption detected at block 0x1800018/0x1000
Metadata corruption detected at block 0x800020/0x1000
btree block 1/4 is suspect, error 117
Metadata corruption detected at block 0x1000018/0x1000
Metadata corruption detected at block 0x18/0x1000
Metadata corruption detected at block 0x1800020/0x1000
btree block 3/4 is suspect, error 117
Metadata corruption detected at block 0x1000020/0x1000
btree block 2/4 is suspect, error 117
Metadata corruption detected at block 0x20/0x1000
Metadata corruption detected at block 0x1800028/0x1000
btree block 3/5 is suspect, error 117
Metadata corruption detected at block 0x800028/0x1000
btree block 1/5 is suspect, error 117

btree block 0/4 is suspect, error 117
Metadata corruption detected at block 0x1000028/0x1000
btree block 2/5 is suspect, error 117
Metadata corruption detected at block 0x1800030/0x1000
btree block 3/6 is suspect, error 117
Metadata corruption detected at block 0x800030/0x1000
btree block 1/6 is suspect, error 117
Metadata corruption detected at block 0x28/0x1000
btree block 0/5 is suspect, error 117
Metadata corruption detected at block 0x1000030/0x1000
btree block 2/6 is suspect, error 117
Metadata corruption detected at block 0x1800038/0x1000
btree block 3/7 is suspect, error 117
Metadata corruption detected at block 0x800038/0x1000
btree block 1/7 is suspect, error 117
Metadata corruption detected at block 0x30/0x1000
Metadata corruption detected at block 0x1000038/0x1000
btree block 2/7 is suspect, error 117
btree block 0/6 is suspect, error 117
Metadata corruption detected at block 0x38/0x1000
btree block 0/7 is suspect, error 117
undiscovered finobt record, ino 96 (0/96)
root inode chunk not found
Phase 3 - for each AG...
        - scan and clear agi unlinked lists...
found inodes not in the inode allocation tree
        - process known inodes and perform inode discovery...
        - agno = 0
UUID mismatch on inode 96
UUID mismatch on inode 97
UUID mismatch on inode 98
UUID mismatch on inode 99
UUID mismatch on inode 100
UUID mismatch on inode 101
UUID mismatch on inode 102
UUID mismatch on inode 103
UUID mismatch on inode 104
UUID mismatch on inode 105
UUID mismatch on inode 106
UUID mismatch on inode 107
UUID mismatch on inode 108
UUID mismatch on inode 109
UUID mismatch on inode 110
UUID mismatch on inode 111
UUID mismatch on inode 112
UUID mismatch on inode 113
UUID mismatch on inode 114
UUID mismatch on inode 115
UUID mismatch on inode 116
UUID mismatch on inode 117
UUID mismatch on inode 118
UUID mismatch on inode 119
UUID mismatch on inode 120
UUID mismatch on inode 121
UUID mismatch on inode 122
UUID mismatch on inode 123
UUID mismatch on inode 124
UUID mismatch on inode 125
UUID mismatch on inode 126
UUID mismatch on inode 127
UUID mismatch on inode 128
UUID mismatch on inode 129
UUID mismatch on inode 130
UUID mismatch on inode 131
UUID mismatch on inode 132
UUID mismatch on inode 133
UUID mismatch on inode 134
UUID mismatch on inode 135
UUID mismatch on inode 136
UUID mismatch on inode 137
UUID mismatch on inode 138
UUID mismatch on inode 139
UUID mismatch on inode 140
UUID mismatch on inode 141
UUID mismatch on inode 142
UUID mismatch on inode 143
UUID mismatch on inode 144
UUID mismatch on inode 145
UUID mismatch on inode 146
UUID mismatch on inode 147
UUID mismatch on inode 148
UUID mismatch on inode 149
UUID mismatch on inode 150
UUID mismatch on inode 151
UUID mismatch on inode 152
UUID mismatch on inode 153
UUID mismatch on inode 154
UUID mismatch on inode 155
UUID mismatch on inode 156
UUID mismatch on inode 157
UUID mismatch on inode 158
UUID mismatch on inode 159
UUID mismatch on inode 96
cleared root inode 96
UUID mismatch on inode 97
cleared realtime bitmap inode 97
UUID mismatch on inode 98
cleared realtime summary inode 98
UUID mismatch on inode 99
cleared inode 99
UUID mismatch on inode 100
cleared inode 100
UUID mismatch on inode 101
cleared inode 101
UUID mismatch on inode 102
cleared inode 102
UUID mismatch on inode 103
cleared inode 103
UUID mismatch on inode 104
cleared inode 104
UUID mismatch on inode 105
cleared inode 105
UUID mismatch on inode 106
cleared inode 106
UUID mismatch on inode 107
cleared inode 107
UUID mismatch on inode 108
cleared inode 108
UUID mismatch on inode 109
cleared inode 109
UUID mismatch on inode 110
cleared inode 110
UUID mismatch on inode 111
cleared inode 111
UUID mismatch on inode 112
cleared inode 112
UUID mismatch on inode 113
cleared inode 113
UUID mismatch on inode 114
cleared inode 114
UUID mismatch on inode 115
cleared inode 115
UUID mismatch on inode 116
cleared inode 116
UUID mismatch on inode 117
cleared inode 117
UUID mismatch on inode 118
cleared inode 118
UUID mismatch on inode 119
cleared inode 119
UUID mismatch on inode 120
cleared inode 120
UUID mismatch on inode 121
cleared inode 121
UUID mismatch on inode 122
cleared inode 122
UUID mismatch on inode 123
cleared inode 123
UUID mismatch on inode 124
cleared inode 124
UUID mismatch on inode 125
cleared inode 125
UUID mismatch on inode 126
cleared inode 126
UUID mismatch on inode 127
cleared inode 127
UUID mismatch on inode 128
cleared inode 128
UUID mismatch on inode 129
cleared inode 129
UUID mismatch on inode 130
cleared inode 130
UUID mismatch on inode 131
cleared inode 131
UUID mismatch on inode 132
cleared inode 132
UUID mismatch on inode 133
cleared inode 133
UUID mismatch on inode 134
cleared inode 134
UUID mismatch on inode 135
cleared inode 135
UUID mismatch on inode 136
cleared inode 136
UUID mismatch on inode 137
cleared inode 137
UUID mismatch on inode 138
cleared inode 138
UUID mismatch on inode 139
cleared inode 139
UUID mismatch on inode 140
cleared inode 140
UUID mismatch on inode 141
cleared inode 141
UUID mismatch on inode 142
cleared inode 142
UUID mismatch on inode 143
cleared inode 143
UUID mismatch on inode 144
cleared inode 144
UUID mismatch on inode 145
cleared inode 145
UUID mismatch on inode 146
cleared inode 146
UUID mismatch on inode 147
cleared inode 147
UUID mismatch on inode 148
cleared inode 148
UUID mismatch on inode 149
cleared inode 149
UUID mismatch on inode 150
cleared inode 150
UUID mismatch on inode 151
cleared inode 151
UUID mismatch on inode 152
cleared inode 152
UUID mismatch on inode 153
cleared inode 153
UUID mismatch on inode 154
cleared inode 154
UUID mismatch on inode 155
cleared inode 155
UUID mismatch on inode 156
cleared inode 156
UUID mismatch on inode 157
cleared inode 157
UUID mismatch on inode 158
cleared inode 158
UUID mismatch on inode 159
cleared inode 159
        - agno = 1
        - agno = 2
        - agno = 3
        - process newly discovered inodes...
Phase 4 - check for duplicate blocks...
        - setting up duplicate extent list...
root inode lost
        - check for inodes claiming duplicate blocks...
        - agno = 0
        - agno = 1
        - agno = 2
        - agno = 3
Phase 5 - rebuild AG headers and trees...
        - reset superblock...
Phase 6 - check inode connectivity...
reinitializing root directory
reinitializing realtime bitmap inode
reinitializing realtime summary inode
        - resetting contents of realtime bitmap and summary inodes
        - traversing filesystem ...
        - traversal finished ...
        - moving disconnected inodes to lost+found ...
Phase 7 - verify and correct link counts...
resetting inode 96 nlinks from 1 to 2
done

root@vger:~# mount /dev/mapper/rvg-sav /tmp/sav

[  811.386714] XFS (dm-5): Mounting V5 Filesystem
[  811.432582] XFS (dm-5): Ending clean mount


root@vger:~# ls -la /tmp/sav/
total 0
drwxr-xr-x  2 root root   6 Apr  6 14:40 .
drwxrwxrwt 10 root root 200 Apr  6 14:38 ..



-- System Information:
Debian Release: 8.0
  APT prefers testing-proposed-updates
  APT policy: (500, 'testing-proposed-updates'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.0-4-amd64 (SMP w/2 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages xfsprogs depends on:
ii  libblkid1     2.25.2-6
ii  libc6         2.19-17
ii  libreadline5  5.2+dfsg-2
ii  libuuid1      2.25.2-6

xfsprogs recommends no packages.

Versions of packages xfsprogs suggests:
ii  acl      2.2.52-2
pn  attr     <none>
pn  quota    <none>
pn  xfsdump  <none>

-- no debconf information

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