Quirq
April 28th, 2013, 06:25 PM
I have my /home on a three-disk software RAID 5, with a separate HDD for the OS. Previously I was using 32-bit Ubuntu Studio 12.10 and had no problems with the RAID.
Yesterday I installed 64-bit UbuStu (on a separate partition). (As the installer doesn't seem to cope with RAIDs, I always install without specifying /home, boot the fresh install and add a line in fstab for md0.) Since then, in about three out of five boots, I've had a warning of a degraded RAID and the usual "do you wish to start with a degraded RAID y/n?".
Once I'm logged in, every time I've had the warning I've checked with...
sudo mdadm -D /dev/md0
...and the output is always:
Version : 1.2
Creation Time : Sun Jun 3 18:17:31 2012
Raid Level : raid5
Array Size : 976763904 (931.51 GiB 1000.21 GB)
Used Dev Size : 488381952 (465.76 GiB 500.10 GB)
Raid Devices : 3
Total Devices : 3
Persistence : Superblock is persistent
Update Time : Sun Apr 28 18:08:13 2013
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 512K
Name : pompeii:0 (local to host pompeii)
UUID : bc308088:a37f3e78:e10000d6:079676d7
Events : 205
Number Major Minor RaidDevice State
0 8 17 0 active sync /dev/sdb1
1 8 33 1 active sync /dev/sdc1
2 8 49 2 active sync /dev/sdd1
From a bit of searching and reading, I think "clean" and having all three active and working suggests I've nothing to worry about, is that so? If there is nothing wrong with my RAID, why am I getting the warning when booting up and what can I do to rectify it?
Yesterday I installed 64-bit UbuStu (on a separate partition). (As the installer doesn't seem to cope with RAIDs, I always install without specifying /home, boot the fresh install and add a line in fstab for md0.) Since then, in about three out of five boots, I've had a warning of a degraded RAID and the usual "do you wish to start with a degraded RAID y/n?".
Once I'm logged in, every time I've had the warning I've checked with...
sudo mdadm -D /dev/md0
...and the output is always:
Version : 1.2
Creation Time : Sun Jun 3 18:17:31 2012
Raid Level : raid5
Array Size : 976763904 (931.51 GiB 1000.21 GB)
Used Dev Size : 488381952 (465.76 GiB 500.10 GB)
Raid Devices : 3
Total Devices : 3
Persistence : Superblock is persistent
Update Time : Sun Apr 28 18:08:13 2013
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 512K
Name : pompeii:0 (local to host pompeii)
UUID : bc308088:a37f3e78:e10000d6:079676d7
Events : 205
Number Major Minor RaidDevice State
0 8 17 0 active sync /dev/sdb1
1 8 33 1 active sync /dev/sdc1
2 8 49 2 active sync /dev/sdd1
From a bit of searching and reading, I think "clean" and having all three active and working suggests I've nothing to worry about, is that so? If there is nothing wrong with my RAID, why am I getting the warning when booting up and what can I do to rectify it?