[mythtv-users] Reassemble RAID with mdadm
MarcT
myrdhn at gmail.com
Tue Mar 16 17:03:24 UTC 2010
Steve,
Here is the current status of my raid -
mdadm -D /dev/md0
/dev/md0:
Version : 00.90
Creation Time : Mon Dec 14 19:17:08 2009
Raid Level : raid1
Array Size : 976759936 (931.51 GiB 1000.20 GB)
Used Dev Size : 976759936 (931.51 GiB 1000.20 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Tue Mar 16 09:00:38 2010
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : d376cfd0:a438be3c:5f1e94b5:d63edfe3 (local to host myth)
Events : 0.283797
Number Major Minor RaidDevice State
0 8 17 0 active sync /dev/sdb1
1 8 33 1 active sync /dev/sdc1
So if the status ever changes to degraded(not sure what it would
change to if bad sectors etc...) could I simply bring the box down and
replace with another drive? I don't have any spares defined trying to
keep power usage as low as possible.
Or is there an added set of commands to run when the bad drive is replaced?
_______________________________________________
Mirroring is fine for fault tolerance, but you get no speed boost from it.
I would recommend getting 2 more drives if you can afford it and setup a
RAID5 configuration.
Not only do you get a fault tolerant array, can lose 1 drive and not lose
data, but you get a speed boost because the system writes data across all
the drives.
MarcT
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