In general, no, though in your specific case it may be that all of the extents are stored contigously and it might work. You would probably need to use losetup -o and specify the offset. This would be more of a last ditch data recovery effort than something you'd design into a production system, though. You might have better results altering one of these issues that is causing you to consider such action:
I can't import the pv/vg because they have the same name/uuid as the existing VG (it's really the same system) and I can't change them with something like vgimportclone because the backed up vm image files are read-only.
In other words, you would back up to one of the following questions: How can I change the names and UUIDs of the backups? How can I import an LV which has a conflicting UUID? How can I use vgimport with a read only source? Specifically, you might be able to ignore the meta data on the backup volumes with pvmetadatacopies = 0 and use "dirs" in lvm.conf, so you can change the working meta data even though they are read only. -- Ray Morris support@bettercgi.com Strongbox - The next generation in site security: http://www.bettercgi.com/strongbox/ Throttlebox - Intelligent Bandwidth Control http://www.bettercgi.com/throttlebox/ Strongbox / Throttlebox affiliate program: http://www.bettercgi.com/affiliates/user/register.php On 05/31/2010 02:21:36 PM, Romeo Theriault wrote:
I apologize if this has been asked before but I was unable to find any references to it in the mailing list archives and googling around isn't helping much. Is there a way to directly mount, bypassing LVM, a ext3 partition that resides in a LVM LV and VG? It resides on one PV. The problem is that I have read-only copies of VM's that are backed up via a SAN based snapshot/backup tool. I'm trying to create a method to allow the VM admins to restore their files from the snapshot backed up VM's. I'm at the point where I can access the partitions and can mount the ext3 partitions fine but I'm having trouble with the LVM volumes because I can't import the pv/vg because they have the same name/uuid as the existing VG (it's really the same system) and I can't change them with something like vgimportclone because the backed up vm image files are read-only. Thanks for any help. -- Romeo Theriault _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
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