[linux-lvm] bootloader questions

[linux-lvm] bootloader questions

[rich turner]

if i have root(/) on a logical volume, is it required that i have /boot
on a separate filesystem? does /boot have to be a partition?

the boot loaders i need to support are lilo and grub. do the answers to
the above question vary if i use lilo or grub?

thanks for the help

Re: [linux-lvm] bootloader questions

[Jean-Luc Coulon (f5ibh)]

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Le 21.02.2005 21:37:54, rich turner a écrit :
> if i have root(/) on a logical volume, is it required that i have
> /boot
> on a separate filesystem? does /boot have to be a partition?
> 
> the boot loaders i need to support are lilo and grub. do the answers
> to
> the above question vary if i use lilo or grub?


both lilo and grub can boot the root filesystem as a logical volume.

but grub cannot boot /boot from a logical volume.
With lilo it can either be a separate lv, a partition, a disk, what you  
what. With grub it should be outside of the logical volume manager  
(IIRC, there is a patch for grub to use /boot on a LV but I've never  
found/tried it)


> 
> thanks for the help

Regards

Jean-Luc

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Re: [linux-lvm] bootloader questions

[rich turner]

this is perhaps the wrong mailing list but is this the case with
software raid as well? although, i believe the software raid must be
raid level 1.

On Mon, 2005-02-21 at 12:50, Jean-Luc Coulon (f5ibh) wrote:
> Le 21.02.2005 21:37:54, rich turner a �crit :
> > if i have root(/) on a logical volume, is it required that i have
> > /boot
> > on a separate filesystem? does /boot have to be a partition?
> > 
> > the boot loaders i need to support are lilo and grub. do the answers
> > to
> > the above question vary if i use lilo or grub?
> 
> 
> both lilo and grub can boot the root filesystem as a logical volume.
> 
> but grub cannot boot /boot from a logical volume.
> With lilo it can either be a separate lv, a partition, a disk, what you  
> what. With grub it should be outside of the logical volume manager  
> (IIRC, there is a patch for grub to use /boot on a LV but I've never  
> found/tried it)
> 
> 
> > 
> > thanks for the help
> 
> Regards
> 
> Jean-Luc
> 
> ______________________________________________________________________
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

[linux-lvm] Re: bootloader questions

[Mark Horn]

On 2005-02-21, rich turner <rich@storix.com> wrote:
> this is perhaps the wrong mailing list but is this the case with
> software raid as well? although, i believe the software raid must be
> raid level 1.

I personally have had great success with /boot being raid 1.  I have
had absolutely no success with /boot working as an LV using either
lilo or grub.

That being said, I'm never going to put / onto an LV again.  I had a
scare this weekend trying to recover all of my LV's without having a
reliable VG backup - which of course was stored on /.  I've moved /
onto raid1, and put /home, /var/log, and /var/www onto LV's.

Re: [linux-lvm] bootloader questions

[Jean-Luc Coulon (f5ibh)]

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Le 21.02.2005 22:22:47, rich turner a écrit :
> this is perhaps the wrong mailing list but is this the case with
> software raid as well? although, i believe the software raid must be
> raid level 1.

I've a software raid1 on 2 SATA drives.
I've LVM over the RAID

Software raid can be about anything

I've setup 2 md devices:
/dev/md0 with /dev/sda1 and /dev/sdb1 for /boot (non lvm)
/dev/md1 with /dev/sda2 and /dev/sdb2 for lvm

The /boot partition is xfs and 100Mbytes
I've setup everything in lvm, even the swap and the root partition.

Jean-Luc
> 
> On Mon, 2005-02-21 at 12:50, Jean-Luc Coulon (f5ibh) wrote:
> > Le 21.02.2005 21:37:54, rich turner a écrit :
> > > if i have root(/) on a logical volume, is it required that i have
> > > /boot
> > > on a separate filesystem? does /boot have to be a partition?
> > >
> > > the boot loaders i need to support are lilo and grub. do the
> answers
> > > to
> > > the above question vary if i use lilo or grub?
> >
> >
> > both lilo and grub can boot the root filesystem as a logical volume.
> >
> > but grub cannot boot /boot from a logical volume.
> > With lilo it can either be a separate lv, a partition, a disk, what
> you
> > what. With grub it should be outside of the logical volume manager
> > (IIRC, there is a patch for grub to use /boot on a LV but I've never
> 
> > found/tried it)
> >
> >
> > >
> > > thanks for the help
> >
> > Regards
> >
> > Jean-Luc
> >
> >  
> ______________________________________________________________________
> > _______________________________________________
> > linux-lvm mailing list
> > linux-lvm@redhat.com
> > https://www.redhat.com/mailman/listinfo/linux-lvm
> > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> 
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> 
> 
> 
> 
> 

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