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Common threads: Linux 2.4 Software RAID, Part 2

Setting up RAID-1 in a production environment

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Listing 3. Kernel boot messages

linear personality registered
raid0 personality registered
raid1 personality registered
raid5 personality registered
raid5: measuring checksumming speed
   8regs     :  1291.209 MB/sec
   32regs    :  1195.197 MB/sec
   pII_mmx   :  2110.740 MB/sec
   p5_mmx    :  2652.522 MB/sec
raid5: using function: p5_mmx (2652.522 MB/sec)
md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27
md.c: sizeof(mdp_super_t) = 4096
autodetecting RAID arrays
(read) ide/host0/bus0/target0/lun0/part5's sb offset: 4610560 [events: 00000004]
(read) ide/host2/bus0/target0/lun0/part1's sb offset: 4610496 [events: 00000002]
autorun ...
considering ide/host2/bus0/target0/lun0/part1 ...
  adding ide/host2/bus0/target0/lun0/part1 ...
  adding ide/host0/bus0/target0/lun0/part5 ...
created md0
bind<ide/host0/bus0/target0/lun0/part5,1>
bind<ide/host2/bus0/target0/lun0/part1,2>
running: <ide/host2/bus0/target0/lun0/part1><ide/host0/bus0/target0/lun0/part5>
now!
ide/host2/bus0/target0/lun0/part1's event counter: 00000002
ide/host0/bus0/target0/lun0/part5's event counter: 00000004
md: superblock update time inconsistency -- using the most recent one
freshest: ide/host0/bus0/target0/lun0/part5
md: kicking non-fresh ide/host2/bus0/target0/lun0/part1 from array!
unbind<ide/host2/bus0/target0/lun0/part1,1>
export_rdev(ide/host2/bus0/target0/lun0/part1)
md0: max total readahead window set to 124k
md0: 1 data-disks, max readahead per data-disk: 124k
raid1: device ide/host0/bus0/target0/lun0/part5 operational as mirror 0
raid1: md0, not all disks are operational -- trying to recover array
raid1: raid set md0 active with 1 out of 2 mirrors
md: updating md0 RAID superblock on device
ide/host0/bus0/target0/lun0/part5 [events: 00000005](write) ide/host0/bus0/target0/lun0/part5's sb offset: 4610560
md: recovery thread got woken up ...
md0: no spare disk to reconstruct array! -- continuing in degraded mode
md: recovery thread finished ...
..
.... autorun DONE.                          

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