I had 2 disks together in one volume group with 4 logical volumes split between them. On Sunday night one of the disks failed. I have backups so this isn't a serious problem, but I'm curious to see if it's possible to recover any data from the disk that is still working. So far I've had no luck. >From googling around it seemed that lvm2 might be able to do this for me. So I installed the 2.6 kernel from rawhide on a test box and updated lvm2-2.00.08-2.i386.rpm mkinitrd-3.5.17-1.i386.rpm device-mapper-1.00.07-2.i386.rpm initscripts-7.43-1.i386.rpm Then I ran lvm vgscan -P --mknodes lvm vgchange -P -a y lvm lvchange -P -a y /dev/scsivg/disk2 (also for other LVs) lvm lvdisplay -P scsivg then shows, in part, Partial mode. Incomplete volume groups will be activated read-only. 1 PV(s) found for VG scsivg: expected 2 Logical volume (swap) contains an incomplete mapping table. --- Logical volume --- LV Name /dev/scsivg/disk2 VG Name scsivg LV UUID 000000-0000-0000-0000-0000-0000-000000 LV Write Access read/write LV Status available # open 0 LV Size 4.50 GB Current LE 1152 Segments 257 Allocation next free Read ahead sectors 10000 Block device 254:0 Which implies that I should be able to do something with this LV. But dd if=/dev/scsivg/disk2 of=/dev/null bs=1k count=1024 0+0 records in 0+0 records out Does anyone have any suggestions of things I could try? Regards, Chris (who's just worked out the hard way that having a VG span two disks is not always a good idea)
