Les Mikesell wrote:
Karl Larsen wrote:
It can be harder than this, though. Consider what happens after you
have been doing this for a while and are re-using disks that already
have auto-detect md devices on them and/or filesystem labels that
may conflict with ones you are using. Some of the quirkier disk
controllers can also map a volume into the position where it was
configured, even if you move it or move to a different machine. You
might pull a disk from the 2nd position on one machine, move it to
the first position on a different machine and add an unconfigured
disk in the 2nd position and have the 2nd drive come up as /dev/sda.
But, as long as your new drive hasn't been used, an 'fdisk -l' will
show you which does not have partitions.
Les you must have had a real hard time with something. I have not
moved a hard drive in 4 years. I don't need to do that here at home.
When I was working years ago I hired a expert to do all those things.
I could still hire an expert but have more fun learning to be one.
I'm supposed to be the expert... Things are a little different when
you need to keep hundreds of old machines running all the time plus
keeping up with all the new stuff. I swap disks around all the time
and a lot of them had linux raid and labeled filesystems in their
previous use too. For a long time, fedora would refuse to boot if
grub.conf or fstab mentioned a label that was duplicated - and
installs used the same label names every time so duplication was
almost certain. Something just smells wrong about that - or any form
of second-guessing which disk is which.
Yes well mdadm --detail /dev/md5 tells me that this hard drive
which does have labels needs to get the labels removed and then get the
partition changed to fd. I think then I will not be able to boot the god
dam thing! So before the change you do something with mkinitrd and that
sure is not something to look for :-(
Getting just a simple raid-1 running and doing so right is a pain.
--
Karl F. Larsen, AKA K5DI
Linux User
#450462 http://counter.li.org.
