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



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


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