LVM2 disk failure

[zeky]

hi,

This is the scenario:

I have 4 disks together in one LVM2 logical group. Unfortunately one of my disks in LVM that also was carrying my root partition died (not completely, it has a lot of bad sectors).

I did not have any RAID on it nor do i have any backup of the lvm configuration.

Is there any chance I can recover data from other 3 disks? I don't mind using 3rd party tools to do that.

Thanks,

zeky
_________________
Beat your dick like it owes you money

[fikiz]

I'm not sure, but I think that the Volume Group structure is replicated among all the Physical Volumes that belong to it. This can give you the possibility to recover the Logical Volumes that doen't had extents on the failed disk.

You should connect the other 3 disks to a working machine (or boot from an USB key) then try commands like lvmdump or lvmdiskscan . Maybe you can activate the VG and mount the LV that are healthy.

alternatively, if you still have access to the /etc/lvm directory of your system you can find a text version of the Volume Group structure. With it, it is possible to attempt a manual recover; I made it a couple of times, but it isn't so simple.

I don't know recovery tools for LVM, sorry.

hth,
ciao.

[Mike Hunt]

There is an article here.