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

[Mache Creeger <mache creeger com>]

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