On Wed, 2004-11-03 at 15:00 -0600, 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
>
Needs to be /dev/hdaX and /dev/hdcY where X and Y are partitions. You
need to partition hda and hdc using fdisk or cfdisk. Create partitions
of type fd (Linux RAID autodetect). So it might look like this:
/dev/hda1 ext3 (/boot) 100MB
/dev/hda2 swap (swap) 500MB
/dev/hda3 fd (RAID partition) 6GB
/dev/hdc1 fd (RAID partition) 6GB
then your /etc/raidtab would look like this:
device /dev/hda3
raid-disk 0
device /dev/hdc1
raid-disk 1
Make sense?
Thomas
