On Sat, Aug 29, 2015 at 10:34:24PM -0500, o1bigtenor wrote:
On Sat, Aug 29, 2015 at 9:30 PM, Lennart Sorensen < lsorense@csclub.uwaterloo.ca> wrote:
What entry do you have for your raid stuff in /etc/fstab? ... nothing listed for md0 or md/0
You can always add it. But, if manual mounting doesn't work, then /etc/fstab won't work either.
And as already said, software raid does NOT use /dev/dm devices, it uses /dev/md devices. dm is for device mapper, which you will see if you use dmraid (which I think most people have fortunately stopped doing), or lvm (which many people are using) or encrypted disks (which some people use).
What does fdisk -l /dev/md0 show? Did you partition the raid or is the filesystem on the full raid?
# fdisk -l /dev/md0 Disk /dev/md0: 1.8 TiB, 2000403038208 bytes, 3907037184 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 524288 bytes / 1048576 bytes Disklabel type: gpt Disk identifier: 1EB47793-0CDF-4E16-AE84-33EC825AC448
sdb ??????sdb1 linux_raid_member debianbase:0 79baaa2f-0aa2-b9fa-18e2-ea6b6e2846b3 ??????md0 sdc ??????sdc1 linux_raid_member debianbase:0 79baaa2f-0aa2-b9fa-18e2-ea6b6e2846b3 ??????md0 sde ??????sde1 linux_raid_member debianbase:0 79baaa2f-0aa2-b9fa-18e2-ea6b6e2846b3 ??????md0 sdf ??????sdf1 linux_raid_member debianbase:0 79baaa2f-0aa2-b9fa-18e2-ea6b6e2846b3 ??????md0
There is no filesystem on /dev/md0. It seems that it has GPT table with no partitions. If you do gdisk -l /dev/md0 you'll probably get similar result as 'fdisk -l'. In that case, you have to follow through and create partitions on /dev/md0. This is similar to regular harddisk /dev/sda with empty MBR table, where you have to follow through and create partitions /dev/sda1, etc. If you intend to use the entire /dev/md0, then wipe off GPT markers using 'gdisk' ("expert" screen -> "zap" option) -- William