Re: raidhotadd and RAID1
hi ya michel
it is trivial to get sw raid1 working if you start
from scratch ... building it from the start
to get it to do raid1 after you already have a disk running
in standalone and trying to make raid1 ( mirror ) out of it
is not as easy ... lots of tricks to play...
- basically, yo have to configure you new raid1
to think that you have a bad disk ( sdb )
an than tell it the new sdb is inserted and let it
do its magic
for more root raid1 mirroring and other assorted docs
- http://www.1U-Raid5.net/HowTo/SW-Raid-HOWTO.txt
it'd be 100x easier to just start installing linux
onto both sda and sdb from the start...
- copy over your /home directory afterward
- true raid test
- pull the power/ide cable out and see if it still works
and reboot and try to boot from the other disk
c ya
alvin
On Fri, 30 Aug 2002 tempsch@telia.com wrote:
> Anyone familiar with software RAID?
>
> I've inherited a system on which they want RAID1.
> There are 2 identical IBM 18G SCSI drives, sda and sdb.
> There was already a system installed on sda, so I followed
> the instruction in the RAID howto on setting up a RAID with
> this disk initially 'failed', copying the system to the initially
> good disk in the RAID . This all went well and the system boots
> from the RAID.
>
> I wiped the original installation and partitioned/formatted this disk
> just like the other one (same sizes and start/stop).
>
> But when I try to raidhotadd it (after removing the 'failed' directive
> from the raid config file) I get "disk to small". I tried to repartition
> the drive so that the partition that's actually part of the RAID would
> be bigger than the existing one but that made no difference...
>
> Anyone with any ideas as to what might be going on?
>
> /Michael
>
>
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