On Mon, 2006-05-01 at 16:55 -0700, David Brown wrote: > On Mon, May 01, 2006 at 07:47:36PM -0400, Brian J. Murrell wrote: > > I need to recover a PV from a disk with no partition table. I have a > > disk which gives EIO errors trying to read from the first few blocks of, > > so, no partition table. > > > > Is there any way with LVM2, given that I have > > the /etc/lvm/backup/<vgname> file that I can determine the offset into > > the disk where the partition starts, so that I could do: > > The backup files don't list physical offsets. Indeed. That's why I used gpart, without success. > But, you can see the id's for the partitions, and the lvm > header is at offset 0x200 into the partition. Yeah, I did notice that on another pv on the system: # hexdump -C /dev/sda2 | less 00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 00000200 4c 41 42 45 4c 4f 4e 45 01 00 00 00 00 00 00 00 |LABELONE........| 00000210 ad 24 02 c2 20 00 00 00 4c 56 4d 32 20 30 30 31 |$. ...LVM2 001| 00000220 68 76 37 6b 4e 49 32 4e 72 5a 33 52 73 39 38 5a |hv7kNI2NrZ3Rs98Z| 00000230 42 65 73 33 53 76 4a 4c 75 68 61 4f 62 6a 53 36 |Bes3SvJLuhaObjS6| Unfortunately, I am unable to find any "LABELONE" on the PV I am trying to recover. I'm getting a bad feeling that that means that the LVM (device mapper) mappings are gone. :-( b. -- My other computer is your Microsoft Windows server. Brian J. Murrell
Attachment:
signature.asc
Description: This is a digitally signed message part
_______________________________________________ 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/
