Mailinglist Archive: opensuse (1420 mails)

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Re: [opensuse] Where does LVM Info live
On 1/20/2014 9:09 AM, Ken Schneider - openSUSE wrote:
On 01/20/2014 10:56 AM, Anton Aylward pecked at the keyboard and wrote:
Trying to recover a crashed disk....

I was under the impression that using LVM tools like 'pvscan' and
'lvscan' could find the LVM partitions, if you could get past the first
few sectors/cylinders of the disk. That is the volume groups info was
'out there' regardless of the tables manipulated by fdisk.

I'm having trouble doing the latter, outer cylinder may be corrupted.


Remember people that LVM is for controlling the size of partitions NOT for
providing RAID like protection. If a disk crashes you can/will
lose all of your data. If you want both you need to start with RAID first
then create your LVM partitions on the RAID device.

And to the extent your LVM is made up of multiple physical (non raid) disks,
your risk is increased with LVM.
Any failure will likely kill your whole file system.
Three small disks have three times the failure potential of one big one.

--i I suspect that
Linux does better at this sort of thing than windows, which may have a single
file scattered all over
the disk, whereas Linux tends (tries) to have it all in one place in
consecutive locations.
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