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Background Reconstructionraidbox# mkraid /dev/md0
handling MD device /dev/md0 analyzing super-block disk 0: /dev/sda1, 2032kB, raid superblock at 1920kB disk 1: /dev/sdb1, 2032kB, raid superblock at 1920kB disk 2: /dev/sdc1, 2032kB, raid superblock at 1920kB md: md0: raid array is not clean -- starting background reconstruction raid1: raid set md0 not clean; reconstructing mirrors The mirror is constructed in
background, transparently, using idle I/O bandwidth. The array is quite
usable during reconstruction, it can be formatted and used. Of course,
there is no redundancy.
Progress of the reconstruction is
shown in /proc/mdstat.
Here is /proc/mdstat
after reconstruction is finished:
raidbox# cat /proc/mdstat
Personalities : [raid1] read_ahead 1024 sectors md0 : active raid1 sdc1[2] sdb1[1] sda1[0] 1920 blocks [2/2] [UU] RAID-0 can be broken up, and each
disk mounted separately (useful for emergency recovery).
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