Dear LVM gurus, I was asked to help with the following problem: A user has reinstalled her system (RHEL 2) without being aware that her data disk, /dev/hdb, had been mounted via LVM, and didn't save any configuration files. Not surptisingly, now she has problems accessing it. The disk in question, as the administrator of that machine claims, was the only one in the VG - although he 'could not be certain'. I have tried the following sequence of steps to recover the data: 1) The drive is recognised as an LVM physical volume: [root@sirocco root]# lvmdiskscan lvmdiskscan -- /dev/hdb [ 74.51 GB] USED LVM whole disk 2) [root@sirocco root]# vgimport -vf vg01 /dev/hdb [..] vgimport -- checking consistency of physical volume "/dev/hdb" vgimport -- ERROR "pv_check_consistency(): PE size" checking physical volume consistency of "/dev/hdb" vgimport -- ERROR: no valid physical volumes found to import volume group "vg01" When debugging, step (2), I found that _NO_ physical extents are found on that drive: 3) [root@sirocco root]# pvdata -E /dev/hdb --- List of physical extents --- [root@sirocco root]# pvdata -P /dev/hdb --- NEW Physical volume --- PV Name /dev/hdb VG Name vg01 PV Size 5.95 MB [12176 secs] PV# 1 PV Status NOT available Allocatable NO Cur LV 0 PE Size (KByte) 0 Total PE 0 Free PE 0 Allocated PE 0 PV UUID Ypqg4d-P5hv-D83V-EHuN-hQop-Zsjh-GaXxaJ At this point, my knowledge of LVM reached its limit, and after searching the web for the error messages above and failing to find anything relevant, I turn to you. I would be most grateful for any suggestions or specific links to documentation. -- Kind Regards Semyon Chaichenets Department of Physics and Astronomy Northwestern University ++ If they give you lined paper, write the other way ++ _______________________________________________ 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/
