So I've been trying to recover my LVM2 over RAID 5 off and on for about a year now, yeah tell me about it! It seems when I decided to upgrade my Ubuntu distro, I didn't think to backup, of course, I completely lost my LVM2/RAID 5. I've tried many processes and software to recover but nothing has proved worthy. I landed on this great tutorial http://www.linuxjournal.com/article/8874 in hopes of recovery only to be stopped dead in my tracks, as it seems I no longer have an md RAID device (dev/md0). I followed this tut diligently and stopped at Listing 3. for obvious reasons. To sum it up, I'm hoping I can receive some direction as to how I may be able to recover my data with my particular situation. The following is the output of the commands leading up to my dilemma as well as a few more that may help. Any help will be greatly appreciated. A huge thanks in advance! Listing 1. LVM Disk Configuration ubuntu@ubuntu:~$ sudo /sbin/sfdisk -l /dev/sdb Disk /dev/sdb: 30401 cylinders, 255 heads, 63 sectors/track Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0 Device Boot Start End #cyls #blocks Id System /dev/sdb1 0+ 30400 30401- 244196001 8e Linux LVM /dev/sdb2 0 - 0 0 0 Empty /dev/sdb3 0 - 0 0 0 Empty /dev/sdb4 0 - 0 0 0 Empty ubuntu@ubuntu:~$ sudo /sbin/pvscan PV /dev/sdb1 VG fileserver lvm2 [232.88 GB / 61.53 GB free] PV /dev/sdc1 VG fileserver lvm2 [232.88 GB / 172.88 GB free] PV /dev/sdd1 VG fileserver lvm2 [232.88 GB / 0 free] PV /dev/sde1 VG fileserver lvm2 [232.88 GB / 0 free] PV /dev/sdf1 VG fileserver lvm2 [232.88 GB / 0 free] Total: 5 [1.14 TB] / in use: 5 [1.14 TB] / in no VG: 0 [0 ] ubuntu@ubuntu:~$ sudo lvscan inactive '/dev/fileserver/share' [40.00 GB] inherit inactive '/dev/fileserver/backup' [60.00 GB] inherit inactive '/dev/fileserver/media' [830.00 GB] inherit Listing 2. RAID Disk Configuration ubuntu@ubuntu:~$ sudo /sbin/sfdisk -l /dev/sdb Disk /dev/sdb: 30401 cylinders, 255 heads, 63 sectors/track Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0 Device Boot Start End #cyls #blocks Id System /dev/sdb1 0+ 30400 30401- 244196001 8e Linux LVM /dev/sdb2 0 - 0 0 0 Empty /dev/sdb3 0 - 0 0 0 Empty /dev/sdb4 0 - 0 0 0 Empty ubuntu@ubuntu:~$ sudo /sbin/sfdisk -l /dev/sdc Disk /dev/sdc: 30401 cylinders, 255 heads, 63 sectors/track Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0 Device Boot Start End #cyls #blocks Id System /dev/sdc1 0+ 30400 30401- 244196001 8e Linux LVM /dev/sdc2 0 - 0 0 0 Empty /dev/sdc3 0 - 0 0 0 Empty /dev/sdc4 0 - 0 0 0 Empty ubuntu@ubuntu:~$ sudo /sbin/sfdisk -l /dev/sdd Disk /dev/sdd: 30401 cylinders, 255 heads, 63 sectors/track Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0 Device Boot Start End #cyls #blocks Id System /dev/sdd1 0+ 30400 30401- 244196001 8e Linux LVM /dev/sdd2 0 - 0 0 0 Empty /dev/sdd3 0 - 0 0 0 Empty /dev/sdd4 0 - 0 0 0 Empty ubuntu@ubuntu:~$ sudo /sbin/sfdisk -l /dev/sde Disk /dev/sde: 30401 cylinders, 255 heads, 63 sectors/track Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0 Device Boot Start End #cyls #blocks Id System /dev/sde1 0+ 30400 30401- 244196001 8e Linux LVM /dev/sde2 0 - 0 0 0 Empty /dev/sde3 0 - 0 0 0 Empty /dev/sde4 0 - 0 0 0 Empty ubuntu@ubuntu:~$ sudo /sbin/sfdisk -l /dev/sdf Disk /dev/sdf: 30401 cylinders, 255 heads, 63 sectors/track Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0 Device Boot Start End #cyls #blocks Id System /dev/sdf1 0+ 30400 30401- 244196001 8e Linux LVM /dev/sdf2 0 - 0 0 0 Empty /dev/sdf3 0 - 0 0 0 Empty /dev/sdf4 0 - 0 0 0 Empty ubuntu@ubuntu:~$ cat /proc/mdstat Personalities : unused devices: Listing 3. Scanning a disk for RAID array members ubuntu@ubuntu:~$ mdadm --examine --scan /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1 /dev/sdf1 ubuntu@ubuntu:~$ ubuntu@ubuntu:~$ sudo mdadm -E /dev/sdb mdadm: No md superblock detected on /dev/sdb. ubuntu@ubuntu:~$ sudo blkid /dev/sdb1: UUID="Jppgxo-zjR2-IgZD-qD7T-800y-y46t-g0vyU8" TYPE="lvm2pv" /dev/sdc1: UUID="3eVlZN-PoI1-H8yB-aSGt-k3z2-LYwx-1bHu55" TYPE="lvm2pv" /dev/sdd1: UUID="cJEYms-03vV-agy8-JWWh-5kCH-Y61W-s9LFse" TYPE="lvm2pv" /dev/sde1: UUID="67i1d6-B6LC-YGdy-6Zcv-aBJq-K0UY-Op1PWB" TYPE="lvm2pv" /dev/sdf1: UUID="X6I6jt-A3R7-Qbcu-rzjk-aH4t-IRBw-mwcOux" TYPE="lvm2pv" ubuntu@ubuntu:~$ sudo pvdisplay --- Physical volume --- PV Name /dev/sdb1 VG Name fileserver PV Size 232.88 GB / not usable 673.00 KB Allocatable yes PE Size (KByte) 4096 Total PE 59618 Free PE 15752 Allocated PE 43866 PV UUID Jppgxo-zjR2-IgZD-qD7T-800y-y46t-g0vyU8 --- Physical volume --- PV Name /dev/sdc1 VG Name fileserver PV Size 232.88 GB / not usable 673.00 KB Allocatable yes PE Size (KByte) 4096 Total PE 59618 Free PE 44258 Allocated PE 15360 PV UUID 3eVlZN-PoI1-H8yB-aSGt-k3z2-LYwx-1bHu55 --- Physical volume --- PV Name /dev/sdd1 VG Name fileserver PV Size 232.88 GB / not usable 673.00 KB Allocatable yes (but full) PE Size (KByte) 4096 Total PE 59618 Free PE 0 Allocated PE 59618 PV UUID cJEYms-03vV-agy8-JWWh-5kCH-Y61W-s9LFse --- Physical volume --- PV Name /dev/sde1 VG Name fileserver PV Size 232.88 GB / not usable 673.00 KB Allocatable yes (but full) PE Size (KByte) 4096 Total PE 59618 Free PE 0 Allocated PE 59618 PV UUID 67i1d6-B6LC-YGdy-6Zcv-aBJq-K0UY-Op1PWB --- Physical volume --- PV Name /dev/sdf1 VG Name fileserver PV Size 232.88 GB / not usable 673.00 KB Allocatable yes (but full) PE Size (KByte) 4096 Total PE 59618 Free PE 0 Allocated PE 59618 PV UUID X6I6jt-A3R7-Qbcu-rzjk-aH4t-IRBw-mwcOux ubuntu@ubuntu:~$ sudo vgdisplay --- Volume group --- VG Name fileserver System ID Format lvm2 Metadata Areas 5 Metadata Sequence No 4 VG Access read/write VG Status resizable MAX LV 0 Cur LV 3 Open LV 0 Max PV 0 Cur PV 5 Act PV 5 VG Size 1.14 TB PE Size 4.00 MB Total PE 298090 Alloc PE / Size 238080 / 930.00 GB Free PE / Size 60010 / 234.41 GB VG UUID kkDoou-3xxF-P1zZ-vAKX-3rlp-PZ2j-Rph3th ubuntu@ubuntu:~$ sudo lvdisplay --- Logical volume --- LV Name /dev/fileserver/share VG Name fileserver LV UUID aNKpVU-0TPC-vTvP-Cf4e-ZqNh-ILPY-ZgaTBF LV Write Access read/write LV Status NOT available LV Size 40.00 GB Current LE 10240 Segments 1 Allocation inherit Read ahead sectors auto --- Logical volume --- LV Name /dev/fileserver/backup VG Name fileserver LV UUID 18TTgL-TGz2-rxgP-MyT5-dVsD-mylO-is7VKv LV Write Access read/write LV Status NOT available LV Size 60.00 GB Current LE 15360 Segments 1 Allocation inherit Read ahead sectors auto --- Logical volume --- LV Name /dev/fileserver/media VG Name fileserver LV UUID VC4KPD-Z4O5-rSGM-P3LR-S1Xu-Ho1Y-9l1dO1 LV Write Access read/write LV Status NOT available LV Size 830.00 GB Current LE 212480 Segments 4 Allocation inherit Read ahead sectors auto
RAID 5 recovery remotely Have you tried turning to RAID Recovery Online? They have a lot of experience with RAID 5 recovery and they will perform a free remote diagnostic of your RAID. After a few hours, you will receive a list of recoverable files.
i would also suggest you to contact the website above ( www.raid-recovery-online.com ) . I tried using them some weeks ago and was preety happy with the result. You can ask for a free diagnostic and it is not obligating. you can just see what the problem is...
