I'm looking for a way of removing active disks from a RAID1 without
disconnecting the drive or making any of the other paritions on the disk
inaccessible.
I think the best way to do this would be to get the md driver to believe
the disk had failed. There seems to be no way of doing this with the
current driver.
I'm interesting in this as a way to get a 6 six array I'm setting up to
have the same boot kernels on each of the disks, so the disks are
interchangable. The procedure would be something like
6 disk RAID1, say md0, mounted on /boot containing kernels etc.
fail and hotremove 5 of the paritions in the array
umount /boot and stop md0
mount partition on to /boot and run lilo
umount /boot and restart md0
mount md0 on /boot
hotadd the 5 removed disks back to md0 to be resync'd
I'm not sure but I think the MBR from the parimary disk would need to be
copyed to the other disks after running lilo.
This would mean if the first disk (bios boot disk) failed it could be
removed and the next disk would be ready to be booted from.
Any thoughts?
Mark
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