On Mon, Jan 10, 2000 at 11:16:27AM -0700, Scott Patten wrote:
1 - I have a raid1 consisting of 2 drives. For strange
historical reasons one is SCSI and the other IDE. Although
the IDE is fairly fast the SCSI is much faster and since I
now have another SCSI drive to add, I would like to replace
the IDE with the SCSI. Can I unplug the IDE drive, run in
degraded mode, edit the raid.conf and somehow mkraid
without loosing data or do I need to restore from tape.
BYW, I'm using 2.2.13ac1.
I assume you configured your raid to "auto-start", i.e. you mkraid'ed it
with persistent_superblock set to 1, and set all the partition types to$
0xfd. If not, please tell me so and we'll work out what you have to do.
But in the case of auto-starting raid, it's quite easy, but a bit lengthy
to explain:
* halt your computer
* remove the IDE drive (keep it in a safe place, in case I screwed up :) )
* attach the second SCSI drive
* boot. Your /dev/md devices should come up fully useable, but in
degraded mode
* partition the second SCSI drive exactly like the first one
* for each md device, "raidhotadd" the new disk to it.
Assuming you have /dev/md5 that consisted of /dev/sda5 and /dev/hda5
(which is now removed), and you partitoined /dev/sdb like /dev/sda, do
raidhotadd /dev/md5 /dev/sdb5
It's actually quite simple, but difficult to explain.
* check /proc/mdstat. It should show that the devices are being resynced
* if you are finished, and everything works, be sure to change
/etc/raidtab to reflect your new settings.
2 - Which is better, 2.2.13ac3 or a patched 2.2.14? Will
there be a 2.2.14ac series? Is there a place besides this
list with this kind of information?
I've been using a patched 2.2.14 for some days without any problems.
Only Alan Cox knows if there will be a 2.2.14ac. He usually writes his
intentions into his diary, http://www.linux.org.uk/diary/
--
Andreas Trottmann [EMAIL PROTECTED]
