Sorry... I am running Mandriva 2006.0, with LVM2 (lvm2-2.01.09-1mdk). I am in the process of migrating to Redhat ES 4.0. I have external storage, EonStor, virtually partitioned into 2+2+1TB to overcome 2TB limitation...and brought together with LVM with PV's sdb, sdc and sdd. I have migrated one such partition to Redhat successfully, simple vgexport and vgimport on the other end after moving physical device. So i rebooted one box to add storage so as to migrate data on reiserfs to new storage, lvm2+ext3. Only then, the old LVM group did not come up. pvscan shows "no matching devices". So i had to go thru LVM recovery...which has fsck'ed my LVM partition, it is no longer mountable, reiserfs --rebuild-tree could not complete, not finding metadata. So i started looking at other nodes, 4 of them, all Mandriva 2006.0 with LVM2....i perform pvscan once, it shows output, then probably pvdisplay, and pvscan again...No output! Only option at that point has been to backup data as fast as possible...and upon reboot, all PV's as expected are not recognized,.....and going thru lvm_recovery (as detailed on http://codeworks.gnomedia.com/archives/2005/general/lvm_recovery/) messes up reiserfs completely. I have ran pvscan on 4 different systems, only to kill LVM...it seems somehow it is removing LVM label from physical partition.... I have not been able to pin-point where the problem might be. On the external Raid5 device, it does not show any signs of fault...besides, we are talking of 4 different systems and four different (same make) storage devices. As for mandriva 2006.0, i simply take all updates it recommends that i am missing...and i cannot see anything remotely close to causing problems. I have osiris running to detect rpm changes...and recently i can only see ssh related stuff, running really concerning. So i am hurriedly backing up all filesystems that are on LVM....since it seems to be to common denominator...though i dont know why.... Just before i sent this out...i saw this thread:: https://www.redhat.com/archives/linux-lvm/2005-May/msg00032.html And that was exactly my problem!! Not sure why!! I have now been able to perform:: losetup /dev/loop0 /dev/sdb losetup /dev/loop1 /dev/sdc losetup /dev/loop2 /dev/sdd and, performed : vgchange -a y (it complained of duplicate uuid's, recreated on sdb1,sdc1 and sdd1 since pvcreate was complaining of /dev/sdb,sdc & sdd not found!) I have been able to mount my reiserfs, so i can continue with migration. Issue which i have to take up with Mandriva guys is why the failure all of a sudden? and do i need to be performing losetup everytime? My original configuration had used whole disks... _Thanks --- Alasdair G Kergon <agk@redhat.com> wrote: > On Mon, Nov 13, 2006 at 09:44:22AM -0800, Richard > Mollel wrote: > > For some unknown reasons...my LVM PV's which have > > worked for several years are dropping! > > A simple rule to follow when reporting a problem: > Tell people the precise version of the software > you're using - and the > distro! > > And if things suddenly stopped working, tell people > about anything possibly > relevant that might have changed recently on the > system. > > Alasdair > -- > agk@redhat.com > > _______________________________________________ > 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/ > ____________________________________________________________________________________ Cheap talk? Check out Yahoo! Messenger's low PC-to-Phone call rates. http://voice.yahoo.com _______________________________________________ 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/
