I received this info when I posted a similar question, perhaps this will be useful. ---------------------- hi, i found your message in the redhat lvm-mailinglist doing a google resarch about exactly that same problem. because i'm not member of the mailing list i prefer to write directly to tell you what i found after days of resarch and as my last resort facing the fact to lose everything on a single 750gb array ;) preface: i had only one(!) lv spanning the whole 750gb vg. i think this is pretty important for the following procedure - especially if the exact parameters are not known (in my case because the whole system was set up trough a 3rd party linux-based NAS) 1) i simply recreated that one lv with lvcreate (my luck it was initially set up using all standards and max. possible size) 2) now there was no filsystem (as i supposed). but a filesystemrepair (xfs_repair in my case) did the magic. it found the 2nd superblock intact and after a short while everything was in place again. 3) feels like winning the lottery. 4) i'm a true linux-novice and to me that procedure felt extreme risky, but i found nothing, absolutely nothing else that comes any near just a little help in such a case; no tools, no how-tos, nothing. so i tried it, at last considering this isn't totally out of logic. bye & greetings from vienna, gerald gstaltner -----Original Message----- From: linux-lvm-bounces@redhat.com [mailto:linux-lvm-bounces@redhat.com]On Behalf Of Jimisola Laursen Sent: Tuesday, January 17, 2006 4:12 PM To: linux-lvm@redhat.com Subject: Re: Lost all logical volumes in two volume groups? Hi! I made the post below a almost a month ago, but I never received any replies. I would really appreciate some help on this matter since I haven't been able to solve it. Kindly, Jimisola ----- Original Message ----- From: "Jimisola Laursen" <public@jimisola.com> To: <linux-lvm@redhat.com> Sent: Thursday, December 22, 2005 11:36 AM Subject: Lost all logical volumes in two volume groups? > Hi! > > After a failed Mandriva upgrade I can no longer use my two LVM (vg01 and > vg02). > When the upgrade failed I unplugged my disks after two-three boots where > ReiserFS found errors until I had reinstalled my system (with OpenSuse). > > I just plugged in my disks again and the LVM partitions are recognized, but > there are no LVs! > Is there anyway for me to fix this? > > I have an old copy of /etc/lvm with archive and backup directories including > vg01_00000.vg and vg01_00001.vg. > No .vg files for vg02 though, but that VG is less important than the vg01 one. > > VG system: current OpenSuse system > VG vg01: shows no LV (have .vg files) > VG vg02: shows no LV (have no .vg files) > > All partitions are ReiserFS. > > Regards, > Jimisola > > fermat:/scratch # vgchange -ay > 0 logical volume(s) in volume group "vg02" now active > 5 logical volume(s) in volume group "system" now active > 0 logical volume(s) in volume group "vg01" now active > fermat:/scratch # vgdisplay > --- Volume group --- > VG Name vg02 > System ID > Format lvm2 > Metadata Areas 1 > Metadata Sequence No 3 > VG Access read/write > VG Status resizable > MAX LV 255 > Cur LV 0 > Open LV 0 > Max PV 255 > Cur PV 1 > Act PV 1 > VG Size 45.90 GB > PE Size 4.00 MB > Total PE 11750 > Alloc PE / Size 0 / 0 > Free PE / Size 11750 / 45.90 GB > VG UUID crHchE-236z-G24u-AGhW-MgDd-nTxD-1MnxHn > > --- Volume group --- > VG Name system > System ID > Format lvm2 > Metadata Areas 1 > Metadata Sequence No 7 > VG Access read/write > VG Status resizable > MAX LV 0 > Cur LV 5 > Open LV 5 > Max PV 0 > Cur PV 1 > Act PV 1 > VG Size 97.66 GB > PE Size 4.00 MB > Total PE 25001 > Alloc PE / Size 11506 / 44.95 GB > Free PE / Size 13495 / 52.71 GB > VG UUID qMe8jO-4Qyl-Weno-k09t-n2Pd-Jo5G-Co7kpn > > --- Volume group --- > VG Name vg01 > System ID > Format lvm2 > Metadata Areas 1 > Metadata Sequence No 12 > VG Access read/write > VG Status resizable > MAX LV 255 > Cur LV 0 > Open LV 0 > Max PV 255 > Cur PV 1 > Act PV 1 > VG Size 232.88 GB > PE Size 4.00 MB > Total PE 59618 > Alloc PE / Size 0 / 0 > Free PE / Size 59618 / 232.88 GB > VG UUID YowUTE-awQj-OyKP-0UGH-nwkD-MZzt-e8P0kK > > _______________________________________________ > 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/ > _______________________________________________ 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/ _______________________________________________ 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/
