Re: [linux-lvm] How do I properly backup and restore / on LVM2

[Alan Pek <alan pek db com>]

Hi Folks,

Thanks.

singmrecfp1001:~ # lvcreate -L 2.5g
-s -n rsnap /dev/rootvg/rootlv

  Logical volume "rsnap"
created

But why the above work ?

And

singmrecfp1001:~ # mount /dev/mapper/rootvg-rsnap
/mnt/rootlv/snap
singmrecfp1001:~ # df -k
Filesystem        
  1K-blocks      Used Available Use% Mounted on
/dev/mapper/rootvg-rootlv
           
           2621356   1637876  
 983480  63% /
tmpfs          
       4000100         4  
4000096   1% /dev/shm
/dev/md0        
       102712     40056     62656
 39% /boot
/dev/mapper/rootvg-rsnap
           
           2621356   1636964  
 984392  63% /mnt/rootlv/snap


However I don't see any lv with lvs

singmrecfp1001:~ # lvs
  LV     VG    
Attr   LSize Origin Snap%  Move Log Copy%
  rootlv rootvg owi-ao 2.50G
  swaplv rootvg -wi-ao 1.00G

I will now mount a NFS filesystem and
do a tar of this snapshot.

Is there anything I have to take care
if now, my rootdisk is gone.

How do I restore from this snapshot
, any specific settings like creating bootable block ?

The root filesystem is reiserfs and
it has software mirrored.

Regards
Alan
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