Re: spare group

[Tomka Gergely <tomka@avaxio.net>]

Neil Brown írta:
> (reads code).
> 
> Ahhh. You are using version-1 superblocks aren't you?  That code only
> works for version-0.90 superblocks.  That was careless of me.  It
> shouldn't be hard to make it work more generally, but it looks like it
> will be slightly more than trivial.  I'll try to get you a patch in
> the next day or so (feel free to remind me if I seem to have
> forgotten).
> 
> Thanks for testing and reporting this problem.
> 
> NeilBrown

# mdadm26 --detail /dev/md0
/dev/md0:
         Version : 00.90.03
   Creation Time : Tue Jun 12 10:31:08 2007
      Raid Level : raid5
      Array Size : 19534848 (18.63 GiB 20.00 GB)
   Used Dev Size : 9767424 (9.31 GiB 10.00 GB)
    Raid Devices : 3
   Total Devices : 4
Preferred Minor : 0
     Persistence : Superblock is persistent

     Update Time : Tue Jun 12 10:33:35 2007
           State : clean
  Active Devices : 3
Working Devices : 4
  Failed Devices : 0
   Spare Devices : 1

          Layout : left-symmetric
      Chunk Size : 64K

            UUID : 5fd83926:01739a55:36458d87:119f8994 (local to host 
ursula)
          Events : 0.4

     Number   Major   Minor   RaidDevice State
        0       8        1        0      active sync   /dev/sda1
        1       8       17        1      active sync   /dev/sdb1
        2       8       33        2      active sync   /dev/sdc1

        3       8       49        -      spare   /dev/sdd1

/dev/md1:
         Version : 00.90.03
   Creation Time : Tue Jun 12 10:31:29 2007
      Raid Level : raid5
      Array Size : 19534848 (18.63 GiB 20.00 GB)
   Used Dev Size : 9767424 (9.31 GiB 10.00 GB)
    Raid Devices : 3
   Total Devices : 3
Preferred Minor : 1
     Persistence : Superblock is persistent

     Update Time : Tue Jun 12 10:36:18 2007
           State : clean, degraded
  Active Devices : 2
Working Devices : 2
  Failed Devices : 1
   Spare Devices : 0

          Layout : left-symmetric
      Chunk Size : 64K

            UUID : 815d6fc4:a55c2602:36458d87:119f8994 (local to host 
ursula)
          Events : 0.6

     Number   Major   Minor   RaidDevice State
        0       8       65        0      active sync   /dev/sde1
        1       8       81        1      active sync   /dev/sdf1
        2       0        0        2      removed

        3       8       97        -      faulty spare   /dev/sdg1

ARRAY /dev/md1 level=raid5 num-devices=3 spare-group=ubul 
UUID=815d6fc4:a55c2602:36458d87:119f8994
ARRAY /dev/md0 level=raid5 num-devices=3 spares=1 spare-group=ubul 
UUID=5fd83926:01739a55:36458d87:119f8994

I am very sorry, but it wont works with .9 superblocks also :( We 
missing something small, but important here. Before you start to code. 
mdadm was running in monitor mode, and reported a Fail. mdadm is the 
latest version, 2.6.2.

tg
-
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html