'normally' an LVM disk would say that it didn't contain a valid partition. That part is missing from the disk and needs to be recoverd.
I've read that one could try pvcreate; vgcfgrestore.
I'm firstly making a backup of the disk with dd if=/dev/hde of=/mnt/hd/hde_raw_dump to ensure i can always 'go back' when I mess up.
gpart found my reiserfs partition (from the VG) so I suspect that all the data is still AOK. I'm just a little 'scared' to run pvcreate; vgcgrestore because when I want to 'list' my vgcgrestore I get the following error:
root@enterprise:/mnt/hd# vgcfgrestore -n vg00 -l
vgcfgrestore -- INFO: using backup file "/etc/lvmconf/vg00.conf"
vgcfgrestore -- ERROR: different structure size stored in "/etc/lvmconf/vg00.conf" than expected in file vg_cfgrestore.c [line 120]
vgcfgrestore -- ERROR "vg_cfgrestore(): read" restoring volume group "vg00"
I suppose this could be because of the missing PV and it won't work untill I have all three PV's up again. However 'listing' should be fine?
Jean-Luc Coulon (f5ibh) wrote:
Le 02.03.2005 20:26:22, oliver a Ãcrit :
Thanks! However the partition is fine and fit so I should be able to dd everything off of it.
The output of gpart was the following: root@enterprise:~# gpart -w hmlvm,1.5 /dev/hde
Begin scan... Possible partition(ReiserFS filesystem), size(50431mb), offset(14mb)
* Warning: short read near sector(120103011), 64512 bytes instead of 66048. Skipp
ing...
End scan.
Checking partitions... Partition(Linux ext2 filesystem): primary Ok.
Guessed primary partition table: Primary partition(1) type: 131(0x83)(Linux ext2 filesystem) size: 50431mb #s(103284656) s(29799-103314454) chs: (29/9/1)-(1023/15/63)d (29/9/1)-(102494/7/62)r
Primary partition(2) type: 000(0x00)(unused) size: 0mb #s(0) s(0-0) chs: (0/0/0)-(0/0/0)d (0/0/0)-(0/0/0)r <snip> part 3 and 4 where 'unused'.
Now gpart found something, however not the missing LVM PV i was hoping. Or atleast, I don't think so. I will google around to see how to make a 1 on 1 copy of this disk, and then try to write it. I'll report back. In the mean time, keep those ideas comming : )
Just an idea, be careful, it is not the *truth* as I have not tested it yet.
Here is what I *think* :
The partition type is no matter for lvm.
Recover the partition as you like then do a fdisk to change the partition type to 8E ... and see (or pray)
J-L
( ... ]
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