[ Wednesday, December 15, 1999 ] Jim Ford wrote:
> I was so pleased at the performance of my raid5 setup that I decided to
> try adding another disk. I altered the raidtab to show the new partition
> (not as a spare) and rebooted. The new partition was detected OK but was
> added to md0 as a spare, which was not as I hoped for. I had hoped that
> it would just add to md0 according to the formula in the HOWTO (N-1)*S,
> thus increasing the available disk space. /dev/mdstat showed that it
> was part of md0, but the size of md0 hadn't changed. I also found that
> even if I marked the new partition as a failed-disk in the raidtab, the
> system still insisted on using it - it's only when I physically remove
> the disk that the array is reconstructed. How do I add a new partition
> to an existing raid5 array?
This is a future capability (not a present one IIRC) of the raidreconf
utility which currently works only for raid0 cases (again IIRC).
It's available from the normal s/w raid HOWTO locations mentioned here.
So the current answer would be "backup, remake, restore"
James
--
Miscellaneous Engineer --- IBM Netfinity Performance Development
