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Recovering SME Server with lvm drives (view source)
Revision as of 09:31, 29 March 2010
, 09:31, 29 March 2010another method to recover data on lvm
==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:
[..]
[..]
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>