My old synology server (cs407s), died. So I'm trying to retrieve the data from the disk. I have tree disks from RAID 5. I tried to mount the disk on computer running grml.
# lsblk
sda 8:0 0 465.8G 0 disk
├─sda1 8:1 0 768.7M 0 part
├─sda2 8:2 0 384.4M 0 part
└─sda3 8:3 0 464.5G 0 part
sdb 8:16 0 465.8G 0 disk
├─sdb1 8:17 0 768.7M 0 part
├─sdb2 8:18 0 384.4M 0 part
└─sdb3 8:19 0 464.5G 0 part
sdc 8:32 0 465.8G 0 disk
├─sdc1 8:33 0 768.7M 0 part
├─sdc2 8:34 0 384.4M 0 part
└─sdc3 8:35 0 464.5G 0 part
and
# mdadm --assemble --scan -v :(
mdadm: looking for devices for further assembly
mdadm: no recogniseable superblock on /dev/loop0
mdadm: no recogniseable superblock on /dev/sdc3
mdadm: no recogniseable superblock on /dev/sdc2
mdadm: no recogniseable superblock on /dev/sdc1
mdadm: Cannot assemble mbr metadata on /dev/sdc
mdadm: no recogniseable superblock on /dev/sda3
mdadm: no recogniseable superblock on /dev/sda2
mdadm: no recogniseable superblock on /dev/sda1
mdadm: Cannot assemble mbr metadata on /dev/sda
mdadm: no recogniseable superblock on /dev/sdb3
mdadm: no recogniseable superblock on /dev/sdb2
mdadm: no recogniseable superblock on /dev/sdb1
mdadm: Cannot assemble mbr metadata on /dev/sdb
mdadm: No arrays found in config file or automatically
Output of informational commands:
“to see which devices have no obvious metadata”
# mdadm --examine /dev/sd* > /dev/null
mdadm: No md superblock detected on /dev/sda1.
mdadm: No md superblock detected on /dev/sda2.
mdadm: No md superblock detected on /dev/sda3.
mdadm: No md superblock detected on /dev/sdb1.
mdadm: No md superblock detected on /dev/sdb2.
mdadm: No md superblock detected on /dev/sdb3.
mdadm: No md superblock detected on /dev/sdc1.
mdadm: No md superblock detected on /dev/sdc2.
mdadm: No md superblock detected on /dev/sdc3.
“to see what information we do have”
# mdadm --examine /dev/sd* 2> /dev/null
/dev/sda: MBR Magic : aa55
Partition[0] : 1574307 sectors at 63 (type fd)
Partition[1] : 787185 sectors at 1574370 (type fd)
Partition[2] : 974133405 sectors at 2634660 (type fd)
/dev/sdb: MBR Magic : aa55
Partition[0] : 1574307 sectors at 63 (type fd)
Partition[1] : 787185 sectors at 1574370 (type fd)
Partition[2] : 974133405 sectors at 2634660 (type fd)
/dev/sdc: MBR Magic : aa55
Partition[0] : 1574307 sectors at 63 (type fd)
Partition[1] : 787185 sectors at 1574370 (type fd)
Partition[2] : 974133405 sectors at 2634660 (type fd)
# pvscan
WARNING: Failed to connect to lvmetad. Falling back to device scanning.
No matching physical volumes found`
Any suggestion about how to proceed from here?
Note: I installed this more than 8 years ago, using via the dsm sofware. So, I've probably used the default. I don't know whether that's is shr or traditional raid.
