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the_y_man
Tux's lil' helper
Tux's lil' helper


Joined: 25 Jan 2004
Posts: 80

PostPosted: Mon Mar 13, 2006 3:54 am    Post subject: raid0 problems... Reply with quote

I previously had the OS installed on a seperate drive and the software raid0 array on two seperate drives, my raidarray is a reiserfs. My raidtab looks like this:
Code:

raiddev                 /dev/md0
 raid-level              0
 nr-raid-disks           2
 chunk-size              32
 persistent-superblock   1
 device                  /dev/hdb1
 raid-disk               0
 device                  /dev/hdc1
 raid-disk               1



I tried to run mdadm /dev/md0 I get this:
Code:
Gentoo ~ # mdadm /dev/md0
/dev/md0: 558.95GiB raid0 2 devices, 0 spares. Use mdadm --detail for more detail.
/dev/md0: No md super block found, not an md component.


ok...so I ran mdadm --detail
Code:

Gentoo ~ # mdadm --detail /dev/md0
/dev/md0:
        Version : 00.90.03
  Creation Time : Sun Mar 12 23:06:46 2006
     Raid Level : raid0
     Array Size : 586099200 (558.95 GiB 600.17 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 0
    Persistence : Superblock is persistent

    Update Time : Sun Mar 12 23:06:46 2006
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0

     Chunk Size : 64K

           UUID : cc10f487:d7ff481b:0271c3f3:3defce9a
         Events : 0.1

    Number   Major   Minor   RaidDevice State
       0       3       65        0      active sync   /dev/hdb1
       1      22        1        1      active sync   /dev/hdc1


mounting my raid array was impossible, any suggestions?[/bug]
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cyrillic
Watchman
Watchman


Joined: 19 Feb 2003
Posts: 7313
Location: Groton, Massachusetts USA

PostPosted: Mon Mar 13, 2006 9:40 pm    Post subject: Re: raid0 problems... Reply with quote

the_y_man wrote:
mounting my raid array was impossible, any suggestions?

Your /etc/raidtab shows a chunk size of 32K, but mdadm is showing 64K. Fixing that may allow you to mount /dev/md0 .
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