[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

md raid 5 not working



Hello All,

I clean installed Fedora 12 on my PC which was previously running Fedora
11.  In F11, I had three md RAID devices: two were configured as RAID 1,
and the third was RAID 5.

/dev/md0 and /dev/md1 came up fine.  But, /dev/md3 (yes, that's what I
called it), did not.  So, before I did anything else, I booted up with a
recovery CD.  Strangely, the recovery CD saw all the raid devices and
brought them all up without any problem!  At least I know my RAID 5 set
is ok.

My Linux RAID skills/experience aren't that deep, so I'm not sure how to
fix this.  I'd appreciate any pointers.

Some details:

[ranbir master Downloads]$ sudo fdisk -l /dev/sd[a-e]

Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000c9149

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          13      104391   fd  Linux raid autodetect
/dev/sda2              14      121601   976655610   fd  Linux raid autodetect

Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xf61d63b2

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1       60801   488384001   fd  Linux raid autodetect

Disk /dev/sdc: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000a00c1

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1   *           1          13      104391   fd  Linux raid autodetect
/dev/sdc2              14      121601   976655610   fd  Linux raid autodetect

Disk /dev/sdd: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x8fa9253e

   Device Boot      Start         End      Blocks   Id  System
/dev/sdd1               1       60801   488384001   fd  Linux raid autodetect

Disk /dev/sde: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xf6ee8946

   Device Boot      Start         End      Blocks   Id  System
/dev/sde1               1       60801   488384001   fd  Linux raid autodetect



[ranbir master Downloads]$ sudo mdadm --examine /dev/sdb
/dev/sdb:
          Magic : a92b4efc
        Version : 0.90.00
           UUID : 3a191f31:ba633013:ae9dbec1:62cec51b
  Creation Time : Sat Aug 15 23:22:40 2009
     Raid Level : raid5
  Used Dev Size : 488386496 (465.76 GiB 500.11 GB)
     Array Size : 976772992 (931.52 GiB 1000.22 GB)
   Raid Devices : 3
  Total Devices : 2
Preferred Minor : 2

    Update Time : Tue Oct 13 13:03:16 2009
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 1
  Spare Devices : 0
       Checksum : 618de7ea - correct
         Events : 13144

         Layout : left-symmetric
     Chunk Size : 64K

      Number   Major   Minor   RaidDevice State
this     0       8       16        0      active sync   /dev/sdb

   0     0       8       16        0      active sync   /dev/sdb
   1     1       0        0        1      faulty removed
   2     2       8       64        2      active sync   /dev/sde

[ranbir master Downloads]$ sudo mdadm --examine /dev/sdd
/dev/sdd:
          Magic : a92b4efc
        Version : 0.90.00
           UUID : 3a191f31:ba633013:ae9dbec1:62cec51b
  Creation Time : Sat Aug 15 23:22:40 2009
     Raid Level : raid5
  Used Dev Size : 488386496 (465.76 GiB 500.11 GB)
     Array Size : 976772992 (931.52 GiB 1000.22 GB)
   Raid Devices : 3
  Total Devices : 3
Preferred Minor : 2

    Update Time : Tue Oct 13 08:56:02 2009
          State : clean
 Active Devices : 3
Working Devices : 3
 Failed Devices : 0
  Spare Devices : 0
       Checksum : 618da50d - correct
         Events : 11958

         Layout : left-symmetric
     Chunk Size : 64K

      Number   Major   Minor   RaidDevice State
this     1       8       48        1      active sync   /dev/sdd

   0     0       8       16        0      active sync   /dev/sdb
   1     1       8       48        1      active sync   /dev/sdd
   2     2       8       64        2      active sync   /dev/sde

[ranbir master Downloads]$ sudo mdadm --examine /dev/sde
/dev/sde:
          Magic : a92b4efc
        Version : 0.90.00
           UUID : 3a191f31:ba633013:ae9dbec1:62cec51b
  Creation Time : Sat Aug 15 23:22:40 2009
     Raid Level : raid5
  Used Dev Size : 488386496 (465.76 GiB 500.11 GB)
     Array Size : 976772992 (931.52 GiB 1000.22 GB)
   Raid Devices : 3
  Total Devices : 2
Preferred Minor : 2

    Update Time : Tue Oct 13 13:04:10 2009
          State : clean
 Active Devices : 1
Working Devices : 1
 Failed Devices : 1
  Spare Devices : 0
       Checksum : 618de85f - correct
         Events : 13146

         Layout : left-symmetric
     Chunk Size : 64K

      Number   Major   Minor   RaidDevice State
this     2       8       64        2      active sync   /dev/sde

   0     0       0        0        0      removed
   1     1       0        0        1      faulty removed
   2     2       8       64        2      active sync   /dev/sde



Regards,

Ranbir


[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]