Confused about RAID on initial install

David Woyciesjes woyciesjes at sbcglobal.net
Fri Mar 10 18:46:07 UTC 2006


Carl Karsten wrote:

> David Woyciesjes wrote:
> 
>> Carl Karsten wrote:
>>
>>> John Lyon wrote:
>>>
>>>> My box has three drives - an 80GB IDE I'd planned on using as file 
>>>> storage,
>>>> and two 9GB SCSI drives I'd planned on setting up with software 
>>>> RAID, and
>>>> using for the OS.
>>>>
>>>> Except - it appears I can't both use RAID, and configure the SCSI 
>>>> drives for
>>>> the root file system.
>>>>
>>>
>>> What you can't do is have /boot on a raid volume.  grub doesn't 
>>> support it.
>>>
>>> What you can do is trick it, but not using the installer.  What you 
>>> end up with:  grub on a normal partition that gets used for raid1 
>>> once the OS boots.
>>>
>>> ^CarlFK
>>>
>>     Actually, you can have /boot on a RAID1 volume set. I did it last 
>> weekend with Edubuntu (5.10). The only catch is you have to use lilo, 
>> not grub. I put / on RAID1, swap on RAID1, and /home on RAID5.
>>
> 
> Oh yeah, I forgot about lilo.
> 
> Are you sure lilo is really using the raid device and not just one of 
> the mirrors?  as in, if you get read errors on the first drive, will 
> lilo know to read from the 2nd drive?
> 
> ^C
> 
	I do believe so, bu I'd have to check for sure.
According to the instructions here...
https://wiki.ubuntu.com/Raid
...and the information on these 2 pages...
https://wiki.ubuntu.com/Installation/LVMOnRaid
https://wiki.ubuntu.com/Installation/RAID1
... I should really be using the the md0 RAID devices for everything.

-- 
--- Dave Woyciesjes
--- ICQ# 905818
--- AIM - woyciesjes





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