[mythtv-users] 1TB Volume running on top of RAID5 Vanished

[Mache Creeger]

Here is additional information

-- Mache

# more /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : inactive hdb1[0] hdh1[4] hdg1[3] hdf1[2] hde1[1]
       976791040 blocks


>Thanks for the responses.  Here are the data listings requested.
>
>I had LVM2 overlayed on a 6 x 200GB RAID5 disk array.  As of now the 
>dev/VolGroup05/LogVol05 which is linked to /opt/bigdisk seems to 
>have vanished.  It seems that the 6th drive (/dev/hdi) has 
>dissappeared from the RAID5 array.
>
>Any help would be most appreciated.
>
>-- Mache
>
># 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
>
>
>At 01:41 PM 10/24/2006, Mache Creeger wrote:
>>A 1TB volume storing 600GB of data has disappeared on my myth 
>>server.  It was formatted with the XFS file system and was running 
>>on top of a six disk (each disk being 200GB) 1TB RAID5 array.  On 
>>boot, the volume does not exist and the RAID5 array is running with 
>>5 out 6 drives.  The 6th drive is visible but not formatted.  In 
>>the past, when you have 5 out 6 drives working, data integrity was 
>>maintained.  In this case, however, the volume just 
>>disappeared.  Any ideas on how to  recover my volume and its 600GB of data?
>>
>>-- Mache Creeger
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mythtv.org/pipermail/mythtv-users/attachments/20061027/3d3d5cf9/attachment.htm