Changes

Jump to navigation Jump to search
another method to recover data on lvm
Line 1: Line 1:  +
==Recovering SME Server with lvm drives==
 +
 +
==Method A==
 
Let’s try starting the raid and see what we get:
 
Let’s try starting the raid and see what we get:
   Line 95: Line 98:  
  [..]
 
  [..]
 
  user@user-desktop:~$
 
  user@user-desktop:~$
 +
 +
==Method B==
 +
based on http://www.linuxjournal.com/article/8874?page=0,0
 +
 +
on ubuntu (non lvm), install mdadm and lvm2, attach server drive,
 +
 +
find UUID's
 +
 +
$ sudo mdadm --examine --scan  /dev/sdb1 /dev/sdb2
 +
ARRAY /dev/md2 level=raid1 num-devices=2 UUID=895293be:9cfa7672:f1761508:386417bc
 +
ARRAY /dev/md1 level=raid1 num-devices=2 UUID=10573599:841f46aa:4c068816:67364324
 +
 +
 +
add ARRAY lines to mdadm.conf
 +
 +
$ cat /etc/mdadm/mdadm.conf
 +
# mdadm.conf
 +
#
 +
# Please refer to mdadm.conf(5) for information about this file.
 +
#
 +
 +
# by default, scan all partitions (/proc/partitions) for MD superblocks.
 +
# alternatively, specify devices to scan, using wildcards if desired.
 +
DEVICE partitions
 +
ARRAY /dev/md2 level=raid1 num-devices=2 UUID=895293be:9cfa7672:f1761508:386417bc
 +
ARRAY /dev/md1 level=raid1 num-devices=2 UUID=10573599:841f46aa:4c068816:67364324
 +
 +
 +
checking
 +
 +
$  sudo pvscan
 +
  PV /dev/md2  VG main  lvm2 [148.94 GB / 64.00 MB free]
 +
  Total: 1 [148.94 GB] / in use: 1 [148.94 GB] / in no VG: 0 [0  ]
 +
 +
checking
 +
 +
$ sudo lvscan
 +
  ACTIVE            '/dev/main/root' [146.94 GB] inherit
 +
  ACTIVE            '/dev/main/swap' [1.94 GB] inherit
 +
 +
mount, check and copy to safe location ...
 +
 +
$ sudo mkdir /mnt/ga
 +
$ sudo mount /dev/main/root /mnt/ga
 +
$ sudo ls -la /mnt/ga/var/log/messages
 +
lrwxrwxrwx 1 root root 32 2010-03-24 18:00 /mnt/ga/var/log/messages -> /var/log/messages.20*
    
<noinclude>[[Category:Howto]]</noinclude>
 
<noinclude>[[Category:Howto]]</noinclude>

Navigation menu