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

[Jonathan E Brassow]

What's the output of 'cat /proc/partitions; pvs; vgs; lvs; cat 
/etc/lvm/backup/Vol01'?

  brassow

On Nov 1, 2006, at 4:31 PM, Mache Creeger wrote:

> 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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>>  _______________________________________________
>>  linux-lvm mailing list
>>  linux-lvm at redhat.com
>> https://www.redhat.com/mailman/listinfo/linux-lvm
>>  read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>>
> _______________________________________________
> linux-lvm mailing list
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