Re: Can't grow raid5 size

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On Fri, Apr 04, 2008 at 09:26:28AM -0700, Shane W wrote:
> Ok this is the problem then.  A drive failed during the
> reshape so it got aborted so was running degraded with
> three of four drives.  Now that I've re-added the fourth,
> it's showing as a spare rather than restarting the grow.

It may also be worth noting that the reshape appears to
still be noted in the array, though it can't continue due
to the failed device.  A mdadm --detail /dev/md0 doesn't
show any reshape activity but:

continuum:~# mdadm -E /dev/sda1
/dev/sda1:
          Magic : a92b4efc
        Version : 00.91.00
           UUID : de2cfbb8:431374f2:873bb752:e60eb5cc
  Creation Time : Thu Mar 27 10:44:20 2008
     Raid Level : raid5
  Used Dev Size : 732419264 (698.49 GiB 750.00 GB)
     Array Size : 2197257792 (2095.47 GiB 2249.99 GB)
   Raid Devices : 4
  Total Devices : 4
Preferred Minor : 0

  Reshape pos'n : 10720704 (10.22 GiB 10.98 GB)
  Delta Devices : 1 (3->4)

    Update Time : Fri Apr  4 09:51:09 2008
          State : clean
Internal Bitmap : present
 Active Devices : 3
Working Devices : 4
 Failed Devices : 1
  Spare Devices : 1
       Checksum : f4a198ba - correct
         Events : 0.792576

         Layout : left-symmetric
     Chunk Size : 64K

      Number   Major   Minor   RaidDevice State
this     2       8        1        2      active sync
/dev/sda1

   0     0       8       17        0      active sync
/dev/sdb1
   1     1       8       33        1      active sync
//dev/sdc1
   2     2       8        1        2      active sync
/dev/sda1
   3     3       0        0        3      faulty removed
   4     4       8       49        4      spare   /dev/sdd1

S
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