[CentOS] MIrrored drives won't boot after installation
Chris Mauritz
chrism at imntv.com
Tue Apr 26 12:41:47 UTC 2005
Gerald Waugh wrote:
>On Monday 25 April 2005 22:25, Chris Mason wrote:
>
>
>>>When you configure the drives as RAID1 the installer never request where
>>>to install the boot record. If configuring with one drive (no raid) the
>>>installer will ask where to install the record.
>>>
>>>
>>>
>>So how do I fix this? I really need to get a mirrored drive system up and
>>running.
>>
>>
>
>I guess you can install lilo manually after the install. There were several
>post about that.
>I use a ks.cfg file, that does the install with raid and lilo.
>Send me an email and I'll send my ks.cfg, if you like.
>
>
I usually create a 128mb (or so) partition in addition to a 512mb-1024mb
swap partition on each disk. On the first disk I put the /boot
directory in that partition. On the 2nd-n disk, I put backups of /boot
or sometimes /tmp. The remaining space on each drive I use for RAID
partitions. That should solve your problem. The only potential
drawback is that if the disk with /boot fails, you will lose data in
that directory. So I've got a cron job that mirrors it's contents into
one or more of the backup partitions each day. In a pinch, I can
manually force lilo/grub to find the /boot partition in another drive.
That strategy has served me well since I began using sofware RAID on
Linux back in '97 or so and later migrated to hardware RAID using Mylex
SCSI RAID controllers and later 3Ware IDE/SATA RAID controllers.
Hope that helps.
Cheers,
Chris
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