RAID problem

[Jeff Vian]

On Wed, 2004-11-03 at 15:00, Yuhard Ngun wrote:
> Hi,
> 
> Does anybody encounter problem configuring software RAID 1 with FC2?
> 
> I have 2 identical HDDs, the 1st one where I install FC2 and the 2nd HDD is
> unformatted. Here is the error messages I got:
> 
> # mkraid /dev/md0
> handling MD device /dev/md0
> analyzing super-block
> disk 0: /dev/hda, 29316672kB, raid superblock at 29316608kB
> disk 1: /dev/hdc, 29316672kB, raid superblock at 29316608kB
> mkraid: aborted.
> (In addition to the above messages, see the syslog and /proc/mdstat as well
> for potential clues.)
> #
> 
> Here is error from log file:
> 
> kernel: md: could not lock hda.
> kernel: md: error, md_import_device() returned -16
> 
> # cat /proc/mdstat
> Personalities :
> md0 : inactive
> unused devices: <none>
> 
> # cat /etc/raidtab
> raiddev /dev/md0
>        raid-level              1
>        nr-raid-disks           2
>        nr-spare-disks          0
>        chunk-size              4
>        persistent-superblock   1
>        device                  /dev/hda
>        raid-disk               0
>        device                  /dev/hdc
>        raid-disk               1
> #
> 
> Any comments and help would be appreciated. Thanks.
> 
> -Yuhard

You apparently defined a raid 1 device during install, then used one of
the raw drives to install. To eliminate the errors you will need to
remove the raid device.