[linux-lvm] 5 out of 6 Volumes Vanished!

[Mache Creeger]

I understand about the md issue, but that only addresses Vol05 and 
does not address the other volumes that are gone.  Any ideas about 
Vol01 to Vol04?

-- Mache

At 09:40 AM 11/1/2006, Jonathan E Brassow wrote:
>I'm not clear on how your LVM volume groups are mapped to the 
>underlying devices; and sadly, I'm not that familiar with md or its 
>terminology.  What does "inactive" mean?  Your first command suggest 
>that /dev/md0 is active, but the second says it is inactive...  In 
>any case, if the md devices are not available and your LVM volume 
>groups are composed of MD devices, that would explain why you are 
>not seeing your volume groups.
>
>You could look are your various LVM backup files (located in 
>/etc/lvm/backup/<vg name>), see what devices they are using and 
>check whether the system sees those devices...
>
>  brassow
>
>On Oct 31, 2006, at 4:56 PM, Mache Creeger wrote:
>
>>  Most of my volumes have vanished, except for Vol0.  I had 6 
>> volumes set up with lvm.  Vol5 had 600 GB of data running over 
>> RAID5 using XFS.
>>
>>  Can anyone help.
>>
>>  Here are some diagnostics.
>>
>>  -- Mache Creeger
>>
>># mdadm -A /dev/md0
>>  mdadm: device /dev/md0 already active - cannot assemble it
>>
>>  # cat /proc/mdstat
>>  Personalities : [raid6] [raid5] [raid4]
>>  md0 : inactive hdi1[5](S) hdb1[0] hdh1[4] hdg1[3] hdf1[2] hde1[1]
>>        1172151808 blocks
>>
>>  unused devices: <none>
>>
>>  # more /proc/mdstat
>>  Personalities : [raid6] [raid5] [raid4]
>>  md0 : inactive hdb1[0] hdh1[4] hdg1[3] hdf1[2] hde1[1]
>>        976791040 blocks
>>
>>  # mdadm --detail /dev/md0
>>  /dev/md0:
>>  Version : 00.90.03
>>  Creation Time : Sat Apr  8 10:01:48 2006
>>  Raid Level : raid5
>>  Device Size : 195358208 (186.31 GiB 200.05 GB)
>>  Raid Devices : 6
>>  Total Devices : 5
>>  Preferred Minor : 0
>>  Persistence : Superblock is persistent
>>
>>  Update Time : Sat Oct 21 22:30:40 2006
>>  State : active, degraded
>>  Active Devices : 5
>>  Working Devices : 5
>>  Failed Devices : 0
>>  Spare Devices : 0
>>
>>  Layout : left-symmetric
>>  Chunk Size : 256K
>>
>>  UUID : 0e3284f1:bf1053ea:e580013b:368be46b
>>  Events : 0.3090999
>>
>>  Number   Major   Minor   RaidDevice State
>>  0       3       65        0      active sync   /dev/hdb1
>>  1      33        1        1      active sync   /dev/hde1
>>  2      33       65        2      active sync   /dev/hdf1
>>  3      34        1        3      active sync   /dev/hdg1
>>  4      34       65        4      active sync   /dev/hdh1
>>  0       0        0       0      removed
>>
>>  # more /etc/fstab
>>  /dev/VolGroup00/LogVol00 
>> /                       ext3    defaults        1 1
>>  LABEL=/boot             /boot                   ext3    defaults        1 2
>>  devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
>>  tmpfs                   /dev/shm                tmpfs   defaults        0 0
>>  /dev/VolGroup04/LogVol04 
>> /opt                    ext3    defaults        1 2
>>  /dev/VolGroup05/LogVol05 
>> /opt/bigdisk            xfs     defaults        1 2
>>  proc                    /proc                   proc    defaults        0 0
>>  sysfs                   /sys                    sysfs   defaults        0 0
>>  /dev/VolGroup01/LogVol01 
>> /usr                    ext3    defaults        1 2
>>  /dev/VolGroup02/LogVol02 
>> /var                    ext3    defaults        1 2
>>  /dev/VolGroup03/LogVol03 
>> swap                    swap    defaults        0 0
>>
>>  # xfs_repair /dev/VolGroup05/LogVol05
>>  /dev/VolGroup05/LogVol05: No such file or directory
>>
>>  fatal error -- couldn't initialize XFS library
>>
>>
>>_______________________________________________
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>>read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
>_______________________________________________
>linux-lvm mailing list
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>read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
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