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Line 61: − smartctl -a /dev/sdb # For all the details available by SMART on the disk+ + + Line 72:
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Line 90: − + − + − md2 : active raid1 sdb2[2] sda2[0] − 488279488 blocks [2/1] [U_] − [=>...................] recovery = 6.3% (31179264/488279488) finish=91.3min speed=83358K/sec + + + +
Talk:Raid:Manual Rebuild (view source)
Revision as of 22:46, 6 February 2013
, 22:46, 6 February 2013no edit summary
{{note box|You'll have to determine if your disk can be reinstated at the array. In fact sometimes a raid can get out of sync after a power failure but also some outages times for physical disk itself. It is necessary to test the hard drive if this occurs repeatedly. For this we will use '''smartctl'''.}}
{{note box|You'll have to determine if your disk can be reinstated at the array. In fact sometimes a raid can get out of sync after a power failure but also some outages times for physical disk itself. It is necessary to test the hard drive if this occurs repeatedly. For this we will use '''smartctl'''.}}
For all the details available by SMART on the disk
smartctl -a /dev/sdb
At least two types of tests are possible, short (~ 1 min) and long (~ 10 min to 90 min).
At least two types of tests are possible, short (~ 1 min) and long (~ 10 min to 90 min).
smartctl -l selftest /dev/sdb
smartctl -l selftest /dev/sdb
{{Note box|if you need to change the disk due to physical failure found by the smartctl command, install a new disk of the same capacity (or more) and enter the following commands to recreate new partitions by copying them from healthy disk sda.}}
sfdisk -d /dev/sda > sfdisk_sda.output
sfdisk /dev/sdb < sfdisk_sda.output
If you want to reintegrate the same disk without replacing it, go to the next step.
=== Add the partitions back ===
=== Add the partitions back ===
=== Another Look at the mdstat ===
=== Another Look at the mdstat ===
[root@ ~]# '''cat /proc/mdstat'''
[root@sme8-64-dev ~]# cat /proc/mdstat
Personalities : [raid1]
Personalities : [raid1]
md1 : active raid1 sdb1[1] sda1[0]
md1 : active raid1 sdb1[1] sda1[0]
104320 blocks [2/2] [UU]
104320 blocks [2/2] [UU]
md2 : active raid1 sdb2[2] sda2[0]
52323584 blocks [2/1] [U_]
[>....................] recovery = 1.9% (1041600/52323584) finish=14.7min speed=57866K/sec
unused devices: <none>
unused devices: <none>