Normally a disk is called sdx
, and its partitions sdx1, sdx2, ...
Seeing your partition dump, I think that somehow the partitions are already recognized as parts of a raid, and get another 'type'. The sizes (#blocks) give away that your raid partitions are dm-0, dm-2, dm-4 and dm-6. I suppose that the NAS also reserved some space for itself in dm-1, 3, 5 and 7, and this array is auto-assembled in md127.
So you could try
mdadm --assemble /dev/md0 /dev/dm-0 /dev/dm-2 /dev/dm-4 /dev/dm-6 --force
I am getting a warnning in the system that a hard disk report health problems. I assume this the one which was giving the problems before but I have no idea which physical drive is that.
Maybe you can find the devicename using smartctl. Smartctl can read the S.M.A.R.T.
status of a disk. The command is
smartctl -d marvell -H /dev/sdx
If it doesn't work, omit the '-d marvell'
After you've found the devicename, you can find the device by letting it work:
dd if=/dev/sdx of=/dev/null
This will copy the contents of the disk to /dev/null, which is a black hole. So the disk will be working hard. After you have identified the physical disk, you can stop it with ctrl-c.
I managed to be a superuser by using "su -"
Yeah, sorry. I should have told you.