On Sun, 4 Nov 2007, Namita Iyer wrote:

> Date: Sun, 04 Nov 2007 18:53:40 +0530
> From: Namita Iyer <[EMAIL PROTECTED]>
> Reply-To:  <[email protected]>
> To:  <[email protected]>
> Subject: Re: [twincling] /boot query
> 
> Saifi Khan wrote:
> > Hi all:
> >
> > Here is a query regarding /boot
> >
> > Recently, saw a discussion on IRC, where folks talked about 
> >
> >   /boot being required if one is using LVM2
> >
> >   /boot being optional, if one is using 
> >   ext2/3 or reiser for the root partition.
> >
> > Any thoughts or experiences with tweaking /boot ?
> >
> >
> > thanks
> > Saifi.
> >   
> Hi Saifi,
> 
> The bootloader and kernel images need to be on a physical partition
> (which will be marked as boot/active partition in the partition table).
> Till the kernel loads, the LVM will not come into picture to interpret
> the volumes.
> 
> Of course, the name of the partition can be anything (not necessarily 
> /boot).
> 
> Namita
> 

Okay, i'm trying to work my way from the boot loader side.

The name "/boot" is required because somewhere the boot loader
has assumed this or that it will just select the partition marked
active (*)

As an example, /dev/sda2 is the boot partition

Disk /dev/sda: 60.0 GB, 60022480896 bytes
255 heads, 63 sectors/track, 7297 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1         262     2104483+  82  Linux swap / Solaris
/dev/sda2   *         263        1568    10490445   83  Linux
/dev/sda3            1569        7297    46018192+  83  Linux

Does the boot loader, say GRUB know '/boot' or '/dev/sda2' ?

Another query, i have is that, how many physical partitions
would LVM2 make ?

One big one and then map all the virtual groups into that one.
How does it work ?


thanks
Saifi.

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