Instructions for LVM?

[Tony Abou-Assaleh]

I got my problem solved, it seems. I was using an older IDE cable on which
HDDs worked fine if accessed only one at a time (either master or slave),
but didn't with a RAID boot .. weird.

Anyway, I found, experimentally, that putting /boot on LVM on a RAID
partition slows down the system boot by about 10 folds. So right now I
have /boot on its own and / and swam are on LVM on RAID. The system is
fairly slow .. a lot slower than when using the Ubuntu live CD. I think I
will try reinstalling with swap on it's own.

BTW, is there a need to use LVM for /? E.g., can I have /boot and swap on
their own and then / on RAID 1 but without LVM?

Cheers,

TAA

-----------------------------------------------------
Tony Abou-Assaleh
Lecturer, Computer Science Department
Brock University, St. Catharines, ON, Canada, L2S 3A1
Office: MC J215
Tel:    +1(905)688-5550 ext. 5243
Fax:    +1(905)688-3255
Email:  taa-HInyCGIudOg at public.gmane.org
WWW:    http://www.cosc.brocku.ca/~taa/
----------------------[THE END]----------------------

On Wed, 4 Jan 2006, Lennart Sorensen wrote:

> On Tue, Jan 03, 2006 at 05:29:02PM -0400, Tony Abou-Assaleh wrote:
> > With regards to the /boot ...
> >
> > Ubuntu says that LILO supports booting from LVM, but GRUB does not. I've
> > been successful in making an Ubuntu box with RAID 1 on two 200GB SATA
> > drives. Each drive includes a single primary partition of type RAID and
> > the rest is LVM.
> >
> > After a few days of trying, I am still unsuccessful in getting the same
> > setup going on two 250GB EIDE drives. LILO fails to load the kernel, RAID
> > or no RAID, but GRUB works fine without RAID.
>
> Personally I used to manually mirror /boot partitions before grub
> supported software raid1.  Now that it does software raid1, I use md
> raid1 for /boot (which I should really have as part of / given there is
> no reason not to anymore).
>
> I do not put / on LVM, since I like having at least a minimal system
> bootable if something does get messed up.  I know some initrd generating
> tools now do LVM, but a year and a half ago, few if any did.
>
> So really, keeping / seperate from lvm seems simpler for booting and
> system recovery and such.
>
> Len Sorensen
> --
> The Toronto Linux Users Group.      Meetings: http://tlug.ss.org
> TLUG requests: Linux topics, No HTML, wrap text below 80 columns
> How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml
>
--
The Toronto Linux Users Group.      Meetings: http://tlug.ss.org
TLUG requests: Linux topics, No HTML, wrap text below 80 columns
How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml