Re: mdadm: Cannot open /dev/sdb1: Device or resource busy

[Mariano Cediel <mariano.cediel@gmail.com>]

[root@xenical ~]# mdadm -D /dev/md0

/dev/md0:

        Version : 1.2

  Creation Time : Thu Apr 26 16:49:47 2012

     Raid Level : raid1

     Array Size : 19529656 (18.62 GiB 20.00 GB)

  Used Dev Size : 19529656 (18.62 GiB 20.00 GB)

   Raid Devices : 2

  Total Devices : 1

    Persistence : Superblock is persistent

    Update Time : Fri Nov 23 23:15:38 2012

          State : clean, degraded

 Active Devices : 1

Working Devices : 1

 Failed Devices : 0

  Spare Devices : 0

           Name : xenical:0  (local to host xenical)

           UUID : f257dc96:61bca1cb:5978f70f:f11c4322

         Events : 1474

    Number   Major   Minor   RaidDevice State

       0       8        1        0      active sync   /dev/sda1

       1       0        0        1      removed

[root@xenical ~]# mdadm -E /dev/sdb1

mdadm: No md superblock detected on /dev/sdb1.