I have had a ton of software RAID problems in the past with LMCE. My 4-disk RAID has been working fine for quite some time now, but today it totally crashed out on me. In the web admin, the RAID array is listed as FAILED, with each individual disk listed as REMOVED / SPARE DISK
Here is some output I'm experiencing while trying to see what is going on...
linuxmce@dcerouter:~$ sudo mdadm -Ebsc partitions
ARRAY /dev/md0 level=raid5 num-devices=4 UUID=ef05e3dd:c2ec8d78:bd9f1658:0a1d2015
linuxmce@dcerouter:~$ sudo mdadm -a /dev/md0 /dev/sdb
mdadm: cannot get array info for /dev/md0
linuxmce@dcerouter:~$ sudo mdadm --detail /dev/md0
mdadm: md device /dev/md0 does not appear to be active.
linuxmce@dcerouter:~$ sudo mount /dev/md0
mount: can't find /dev/md0 in /etc/fstab or /etc/mtab
linuxmce@dcerouter:~$ cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md0 : inactive sdb(S) sde(S) sdd(S) sdc(S)
unused devices: <none>
Ever since I have had so many problems in the past, I check at least once every few days on the RAID array status to make sure everything looks good. I just checked yesterday and there wasn't a single problem. Last night, I tried to copy the movie "Leatherheads" to the core, it stopped at 3% and gave the message that it may take a long time to copy. I left it in overnight, and this morning everything was completely crashed out (I couldn't even SSH into the core)
Upon reboot,nothing RAID related appears to work.
I had almost 3TB of data on this RAID array. I really hope it is not all lost - just 6 months ago it was all lost and I had to restart from scratch. I don't have the energy or time to do that again.
Can anybody help me find out what the problem is this time? (Since last time I completely changed motherboards and everything - I am now using an M2n-SLI Deluxe which is known to work very well.
Also - I would warn anybody not to use LMCE's software RAID to save themselves all of the problems I have had. I wish I could afford a dependable RAID solution, but unfortunately with a single income and a family of 6, that is just never going to happen. (it is also why I can not afford to do true backups of 3TB of data)
thanks for any help anyone can offer