[ale] Can't find LVM volumes on USB drive

Jim Kinney jim.kinney at gmail.com
Fri Nov 30 11:18:02 EST 2012


It may be possible to restore access by recreating the partitions as they
were originally. Basically, remove and remake them. Then create a new LV
with some name you choose and try the lvscan again.

The problem is that this arrangement looks like a default
rhel/centos/fedora drive with sde1 is boot, sde2 is swap and sde3 is LVM
with / and home. If you just create a single LV inside sde3 you may be able
to extract most of the stuff up to the boundary that no longer exists. Ugh.

On Thu, Nov 29, 2012 at 7:22 PM, Jim Lynch <ale_nospam at fayettedigital.com>wrote:

> I had a disk starting to develop problems according to SMART. Excessive
> bad sectors so I replaced it.  To make a long story short, I trashed a
> partition on the new disk accidently so I plugged the old one into a USB/HD
> jig to try to get some data from it.  fdisk -l /dev/sde shows:
>
> /dev/sde1               1        6079    48829536   83  Linux
> /dev/sde2            6080       18238    97667167+  83  Linux
> /dev/sde3           18239       60801   341887297+  8e  Linux LVM
>
> If I attempt to mount /dev/sde3 it complains about
> mount: you must specify the filesystem type
>
> vgscan doesn't find anything on that drive.  It does find a volume group
> on /dev/sda however.
>
> I tried an fsck /dev/sde3 and got bunches of errors that looked bad.  I
> answered no to fixing them.  I'm not surprised at this since I'm sure this
> device had an lvm volume on it at one time.
>
>
> Is there any way to recover this?  Every time I set a system up with LVM I
> run into these kinds of problems.  You'd think I'd learn eventually.
>
> Thanks,
> Jim.
>
>
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-- 
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James P. Kinney III
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