Colin Faber [cfaber@gmail.com] wrote: > was unavailable. After searching around I kept coming back to suggestions > stating that removal of the missing device from the volume group was the > solution to getting thing back online again. So using 'vgreduce > --removemissing raid' then 'lvchange -ay raid' to update the changes - > Neither command errored and vgreduce noted that 'raid' was not available > again. Since your LV (array) is most likely allocated on md1 that disappeared, you really want --partial (lvm command) rather than --removemissing. Your metadata is updated and any knowledge about 'array' LV is now almost gone due to the above 'vgreduce'. I say almost gone because it might be there but you really need true LVM expertise now! Did you save a copy of your old LVM metadata before the reboot? See your /etc/lvm/backup/raid has any reference to 'array' LV at all. --Malahal. > So as it stands now I have no logical volume, I have a volume group and I > have a functional md0 array. If I dump the first 50 or so megs of the md0 > raid array I can see the volume group information, as well as the lv > information including various bits of file system information. > > At this point I'm wondering can I recover the logical volume and recover > this 1.8TB of data. > > For completeness here is the results of various display and scan commands: > > root@Aria:/dev/disk/by-id# pvscan > PV /dev/md0 VG raid lvm2 [1.82 TB / 1.82 TB free] > Total: 1 [1.82 TB] / in use: 1 [1.82 TB] / in no VG: 0 [0 ] > > root@Aria:/dev/disk/by-id# pvdisplay > --- Physical volume --- > PV Name /dev/md0 > VG Name raid > PV Size 1.82 TB / not usable 2.25 MB > Allocatable yes > PE Size (KByte) 4096 > Total PE 476933 > Free PE 476933 > Allocated PE 0 > PV UUID oI1oXp-NOSk-BJn0-ncEN-HaZr-NwSn-P9De9b > > root@Aria:/dev/disk/by-id# vgscan > Reading all physical volumes. This may take a while... > Found volume group "raid" using metadata type lvm2 > > root@Aria:/dev/disk/by-id# vgdisplay > --- Volume group --- > VG Name raid > System ID > Format lvm2 > Metadata Areas 1 > Metadata Sequence No 11 > VG Access read/write > VG Status resizable > MAX LV 0 > Cur LV 0 > Open LV 0 > Max PV 0 > Cur PV 1 > Act PV 1 > VG Size 1.82 TB > PE Size 4.00 MB > Total PE 476933 > Alloc PE / Size 0 / 0 > Free PE / Size 476933 / 1.82 TB > VG UUID quRohP-EcsI-iheW-lbU5-rBjO-TnqS-JbjmZA > > root@Aria:/dev/disk/by-id# lvscan > root@Aria:/dev/disk/by-id# > > root@Aria:/dev/disk/by-id# lvdisplay > root@Aria:/dev/disk/by-id# > > > Thank you. > > -cf > > _______________________________________________ > 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/
