strange mdstat output

strange mdstat output

[Rene Scherer]

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Hi all

I've setup a RAID 1 array between 2 of my external disks (/dev/sda1 and
/dev/sdb1).

But for some reason "cat /proc/mdstat" doesn't show the first disk as
sda1[0]. Instead it shows [dev 08:01][0].

md0 : active raid1 sdb1[1] [dev 08:01][0]
      10241280 blocks [2/2] [UU]

Does anyone have any idea why?

Many thanks,
Rene



BTW: Here is my /etc/raidtab:

raiddev /dev/md0
   raid-level        1
   nr-raid-disks     2
   nr-spare-disks    0
   persistent-superblock 1
   chunk-size        4
   device   /dev/sda1
   raid-disk 0
   device   /dev/sdb1
   raid-disk 1


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Re: strange mdstat output

[Neil Brown]

On Tuesday June 18, rene@scherer-online.com wrote:
> Hi all
> 
> I've setup a RAID 1 array between 2 of my external disks (/dev/sda1 and
> /dev/sdb1).
> 
> But for some reason "cat /proc/mdstat" doesn't show the first disk as
> sda1[0]. Instead it shows [dev 08:01][0].
> 
> md0 : active raid1 sdb1[1] [dev 08:01][0]
>       10241280 blocks [2/2] [UU]
> 
> Does anyone have any idea why?

What version of linux are you using?

What is the first occurance of the string "dev 08:01" in your kernel
logs (e.g. /var/log/kern.log) since the most recent reboot.

With this information I might be able to explain.

NeilBrown