RAID0 wont mount
Posted: Sat Sep 08, 2012 8:34 am
Hey guys,
i tried talking to skype support but no reply, do they use it?
anyway here is my issue
I am having a problem with my QNAP TS410, fw 3.6.2 build 1126T,
for some reason my RAID0 is not showing. i had 2x2TB RAID0 setup and copied half the data to an external HDD then inserted 4x2TB HDD and created a RAID5.
this worked fine and i copied from the external HDD to my new RAID5.
but when i reinserted the 2x2TB RAID0 drives in the same order the QNAP doesnt recognise them, i know a little linux so i tried SSHing and this is what i got:
when i run a FDISK using SSH i can see the 2x2TB drives, when i check MDADM it shows MD0 as active
but MD13 and MD9 are missing 2 parts (these raids use the extra partitions it makes from the 2x2TB disks). i suspect that this is from the extra 2 disk in the RAID5 and maybe this is why i cannot see any data.
if i do MDADM -- stop and then mdadm -A it starts both the disks and the raid but fdisk still shows that MD0 is 0bytes
if i try and mount md0 i get the following error
mount: wrong fs type, bad option, bad superblock on /dev/md0,
i checked dmesg
dmesg | grep md0
md: md0 stopped.
md: md0 stopped.
md0: setting max_sectors to 128, segment boundary to 32767
md0: unknown partition table
EXT3-fs: md0: couldn't mount because of unsupported optiona
ive got no idea whats going on. i can only conclude that the nas firmware saves the previous state and therefore is expecting my 4x2TB RAID5 and doesnt actually read the superblock on the disks.
i could really use help on this, ive got 2TB of data that i really dont want to lose, and the ironic part is that i wanted to change to a RAID5 so i wouldnt lose my data and look what happened
thanks in advanced.
James
i tried talking to skype support but no reply, do they use it?
anyway here is my issue
I am having a problem with my QNAP TS410, fw 3.6.2 build 1126T,
for some reason my RAID0 is not showing. i had 2x2TB RAID0 setup and copied half the data to an external HDD then inserted 4x2TB HDD and created a RAID5.
this worked fine and i copied from the external HDD to my new RAID5.
but when i reinserted the 2x2TB RAID0 drives in the same order the QNAP doesnt recognise them, i know a little linux so i tried SSHing and this is what i got:
when i run a FDISK using SSH i can see the 2x2TB drives, when i check MDADM it shows MD0 as active
but MD13 and MD9 are missing 2 parts (these raids use the extra partitions it makes from the 2x2TB disks). i suspect that this is from the extra 2 disk in the RAID5 and maybe this is why i cannot see any data.
if i do MDADM -- stop and then mdadm -A it starts both the disks and the raid but fdisk still shows that MD0 is 0bytes
if i try and mount md0 i get the following error
mount: wrong fs type, bad option, bad superblock on /dev/md0,
i checked dmesg
dmesg | grep md0
md: md0 stopped.
md: md0 stopped.
md0: setting max_sectors to 128, segment boundary to 32767
md0: unknown partition table
EXT3-fs: md0: couldn't mount because of unsupported optiona
ive got no idea whats going on. i can only conclude that the nas firmware saves the previous state and therefore is expecting my 4x2TB RAID5 and doesnt actually read the superblock on the disks.
i could really use help on this, ive got 2TB of data that i really dont want to lose, and the ironic part is that i wanted to change to a RAID5 so i wouldnt lose my data and look what happened
thanks in advanced.
James