/ # cat /proc/mdstat
/>/ Personalities : [raid0] [raid1] />/ md124 : active raid1 sdb[1] sdc[0] />/ 293032960 blocks super external:/md125/0 [2/2] [UU] />/ />/ md125 : inactive sdb[1](S) sdc[0](S) />/ 6184 blocks super external:imsm />/ />/ md126 : active raid0 sdd[1] sde[0] />/ 156296192 blocks super external:/md127/0 128k chunks />/ />/ md127 : inactive sde[1](S) sdd[0](S) />/ 5032 blocks super external:imsm / Super something on external devices which are inactive?
They are all internal drives. That is the normal good state for the arrays. After a reboot md124 would show auto-read-only instead of active. When in that state I cannot mount the filesystem.
I think I would try to make it so that the mdtools figure out what the arrays consist of automatically. IIRC it is not necessary, maybe not even advisable, to specify explicitly in mdadm.conf what the arrays are made of because there is information stored on the disks that allow to build them automatically.
The mdadm.conf was built when F18 was installed. Running mdadm --detail --scan returns the same info as what is in the conf file. I checked that already to make sure there was not any differences.
Is md124 a RAID-1 on top of a RAID-0?
Two separate arrays.
Thanks Alan
Alan Gagne alanjgagne@gmail.com writes:
/ # cat /proc/mdstat
/>/ Personalities : [raid0] [raid1] />/ md124 : active raid1 sdb[1] sdc[0] />/ 293032960 blocks super external:/md125/0 [2/2] [UU] />/ />/ md125 : inactive sdb[1](S) sdc[0](S) />/ 6184 blocks super external:imsm />/ />/ md126 : active raid0 sdd[1] sde[0] />/ 156296192 blocks super external:/md127/0 128k chunks />/ />/ md127 : inactive sde[1](S) sdd[0](S) />/ 5032 blocks super external:imsm / Super something on external devices which are inactive?
They are all internal drives. That is the normal good state for the arrays. After a reboot md124 would show auto-read-only instead of active. When in that state I cannot mount the filesystem.
You mean the whole array md124 goes read-only? Or are the partitions on it mounted ro? Why do you need to rewrite the partition tables?
How do you know when any of the physical disks go bad?