wiki:TipAndDoc/storage/RAID/rescue/RAID1

Version 1 (modified by mitty, 13 years ago) (diff)

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RAID1

sample RAID1 device

  • mitty@ubuntu-haa:~$ sudo mdadm -D /dev/md0
    /dev/md0:
            Version : 00.90
      Creation Time : Thu Mar 24 17:31:36 2011
         Raid Level : raid1
         Array Size : 2047936 (2000.27 MiB 2097.09 MB)
      Used Dev Size : 2047936 (2000.27 MiB 2097.09 MB)
       Raid Devices : 2
      Total Devices : 2
    Preferred Minor : 0
        Persistence : Superblock is persistent
    
        Update Time : Thu Mar 24 21:25:32 2011
              State : clean
     Active Devices : 2
    Working Devices : 2
     Failed Devices : 0
      Spare Devices : 0
    
               UUID : 32578407:6f33f50b:893cf340:745f5dce (local to host ubuntu-haa)
             Events : 0.34
    
        Number   Major   Minor   RaidDevice State
           0       8       17        0      active sync   /dev/sdb1
           1       8       33        1      active sync   /dev/sdc1
    
  • mitty@ubuntu-haa:~$ sudo mdadm --stop /dev/md0
    mdadm: stopped /dev/md0
    
  • mitty@ubuntu-haa:~$ sudo mdadm -E /dev/sd[bc]1
    /dev/sdb1:
              Magic : a92b4efc
            Version : 00.90.00
               UUID : 32578407:6f33f50b:893cf340:745f5dce (local to host ubuntu-haa)
      Creation Time : Thu Mar 24 17:31:36 2011
         Raid Level : raid1
      Used Dev Size : 2047936 (2000.27 MiB 2097.09 MB)
         Array Size : 2047936 (2000.27 MiB 2097.09 MB)
       Raid Devices : 2
      Total Devices : 2
    Preferred Minor : 0
    
        Update Time : Thu Mar 24 21:25:32 2011
              State : clean
     Active Devices : 2
    Working Devices : 2
     Failed Devices : 0
      Spare Devices : 0
           Checksum : e3889399 - correct
             Events : 34
    
    
          Number   Major   Minor   RaidDevice State
    this     0       8       17        0      active sync   /dev/sdb1
    
       0     0       8       17        0      active sync   /dev/sdb1
       1     1       8       33        1      active sync   /dev/sdc1
    /dev/sdc1:
              Magic : a92b4efc
            Version : 00.90.00
               UUID : 32578407:6f33f50b:893cf340:745f5dce (local to host ubuntu-haa)
      Creation Time : Thu Mar 24 17:31:36 2011
         Raid Level : raid1
      Used Dev Size : 2047936 (2000.27 MiB 2097.09 MB)
         Array Size : 2047936 (2000.27 MiB 2097.09 MB)
       Raid Devices : 2
      Total Devices : 2
    Preferred Minor : 0
    
        Update Time : Thu Mar 24 21:25:32 2011
              State : clean
     Active Devices : 2
    Working Devices : 2
     Failed Devices : 0
      Spare Devices : 0
           Checksum : e38893ab - correct
             Events : 34
    
    
          Number   Major   Minor   RaidDevice State
    this     1       8       33        1      active sync   /dev/sdc1
    
       0     0       8       17        0      active sync   /dev/sdb1
       1     1       8       33        1      active sync   /dev/sdc1