Nobody an idea how to recover the lvm meta data on the disk? The data itself an the other disks are fine, just the first sectors of /dev/hdc are gone by installing grub on it. I had a deeper look on the disk with one of those low level disk editors and there are still parts of the meta-data stored on the disk. It seems to be that grub messed up just the first 17 sectors of the disk. Regards, BigMac BigMac schrieb: > Hi lists! > > My fileserver stored it's data on 3 physical disks,building a > volumegroup with lvm2. > The mashine was running ubuntu dapper drake for a long time without any > problems but I decided to switch to ubuntu feisty fawn. Switching from > debian to dapper drake I installed and removed quite a lot of packages, > leaving a messy system, so I thought a new and clean installation with > feisty fawn might be a great idea. > > box config with dapper drake: > > hda: 120GB (PATA) systemdisk > hdb: unused > hdc: 250GB (PATA) part of the LVM-array > hdd: 250GB (PATA) part of the LVM-array > sda: 400GB (SATA) part of the LVM-array > sdb: DVD-RW (PATA on additional PCI-controller UDMA-100) > > The additional IDE-controller was installed to be able to install even > more disks, but as I won't buy any new PATA stuff the controller was > dispensable. > > new box config: > > hda: 120GB (PATA) systemdisk > hdb: DVD-RW > hdc: 250GB (PATA) part of the LVM-array > hdd: 250GB (PATA) part of the LVM-array > sda: 400GB (SATA) part of the LVM-array > > I exported the vg before shutting down dapper drake and while installing > festy fawn to the box I - no idea what did me do so - installed grub to > hdc. Ooops, this disk was part of the LVM array and so grub f*cked up > the lvm meta-data on hdc. > > After installing grub to hda the box is running fine, despite the LVM > which can't find one of the vgs volumes: > > Code: > > bigmac@knecht:~$ sudo pvscan > Couldn't find device with uuid '9kpWwu-LdwT-YiqV-DRPg-kSAN-plYN-v1Eq81'. > Couldn't find device with uuid '9kpWwu-LdwT-YiqV-DRPg-kSAN-plYN-v1Eq81'. > Couldn't find device with uuid '9kpWwu-LdwT-YiqV-DRPg-kSAN-plYN-v1Eq81'. > Couldn't find device with uuid '9kpWwu-LdwT-YiqV-DRPg-kSAN-plYN-v1Eq81'. > PV /dev/hdd VG vgdata lvm2 [232.88 GB / 0 free] > PV unknown device VG vgdata lvm2 [232.88 GB / 0 free] > PV /dev/sda VG vgdata lvm2 [372.61 GB / 4.00 MB free] > Total: 3 [838.38 GB] / in use: 3 [838.38 GB] / in no VG: 0 [0 ] > > bigmac@knecht:~$ sudo pvdisplay > Couldn't find device with uuid '9kpWwu-LdwT-YiqV-DRPg-kSAN-plYN-v1Eq81'. > Couldn't find device with uuid '9kpWwu-LdwT-YiqV-DRPg-kSAN-plYN-v1Eq81'. > Couldn't find device with uuid '9kpWwu-LdwT-YiqV-DRPg-kSAN-plYN-v1Eq81'. > Couldn't find device with uuid '9kpWwu-LdwT-YiqV-DRPg-kSAN-plYN-v1Eq81'. > --- Physical volume --- > PV Name /dev/hdd > VG Name vgdata > PV Size 232.88 GB / not usable 0 > Allocatable yes (but full) > PE Size (KByte) 4096 > Total PE 59618 > Free PE 0 > Allocated PE 59618 > PV UUID locW5S-HNFK-b1WW-iOLt-olHl-2SNd-fmXKC8 > > --- Physical volume --- > PV Name unknown device > VG Name vgdata > PV Size 232.88 GB / not usable 0 > Allocatable yes (but full) > PE Size (KByte) 4096 > Total PE 59618 > Free PE 0 > Allocated PE 59618 > PV UUID 9kpWwu-LdwT-YiqV-DRPg-kSAN-plYN-v1Eq81 > > --- Physical volume --- > PV Name /dev/sda > VG Name vgdata > PV Size 372.61 GB / not usable 0 > Allocatable yes > PE Size (KByte) 4096 > Total PE 95388 > Free PE 1 > Allocated PE 95387 > PV UUID YUJcsF-3XP7-OrbO-pITp-5z96-gw1A-DI11QS > > > bigmac@knecht:~$ sudo vgscan > Reading all physical volumes. This may take a while... > Couldn't find device with uuid '9kpWwu-LdwT-YiqV-DRPg-kSAN-plYN-v1Eq81'. > Couldn't find all physical volumes for volume group vgdata. > Couldn't find device with uuid '9kpWwu-LdwT-YiqV-DRPg-kSAN-plYN-v1Eq81'. > Couldn't find all physical volumes for volume group vgdata. > Couldn't find device with uuid '9kpWwu-LdwT-YiqV-DRPg-kSAN-plYN-v1Eq81'. > Couldn't find all physical volumes for volume group vgdata. > Couldn't find device with uuid '9kpWwu-LdwT-YiqV-DRPg-kSAN-plYN-v1Eq81'. > Couldn't find all physical volumes for volume group vgdata. > Volume group "vgdata" not found > > I tried multiple Live-CDs like gparted (with testdisk), Ultimate Boot-CD > and SystemRescueCd, but none could help. > > Any idea what to do to get the lvm up and running? > How to restore the metadata on hdc? > > Best Regards, > > BigMac > > _______________________________________________ > 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/
