[linux-lvm] Some suggestions about lvminitrd_create
francis.souyri at wanadoo.fr
Fri May 17 00:04:02 UTC 2002
Patrick Caulfield wrote:
>On Thu, May 16, 2002 at 05:10:58PM +0200, Bas wrote:
>>>>Just a couple of suggestions firstly it would be nice if it checked
>>>>for /boot/System.map-'uname -r' rather than for just /boot/System.map.
>>>>When you have more than one kernel floating about this is handy.
>>>Yep, that's what the "-F" option aims to support.
>>>>Second suggestion it would be nice if a -t option existed to allow a
>>>>choice in the type of filesystem the initrd is created in. Not everyone
>>>>is using ext2 these days :)
>>>Well, why do you want to use a different filesystem on a relatively tiny
>>>and little populated ram disk?
>>Because once you choose to use XFS, you don't need ext2 utils anymore, so
>>why would you want to install ext2utils ?
>You really want to use XFS for an initrd??
># dd if=/dev/zero of=disk bs=1024 count=8192
># mkfs.xfs disk
># mount -oloop disk /mnt
># df /mnt
>Filesystem 1k-blocks Used Available Use% Mounted on
>/root/disk 3392 32 3360 1% /mnt
>OK you could tune that up a bit but I think ext2 is more approriate for an
>initrd and the ext2 utils don't take up /that/ much space: probably much less
>than your XFS journals in fact :-)
>linux-lvm mailing list
>linux-lvm at sistina.com
>read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html
I use "romfs" for the 'initrd" it take less place in the kernel than
"ext2" (I use "reiserfs" for "normal" filesystems), the only problem is
that "romfs" is a read only filesytem but you can use the "tmpfs" like
this in your "linuxrc" script:
mount -t tmpfs none /etc
mount -t proc none /proc
echo "Scanning for Volume Group..."
echo "Activating 'root' Volume Group"
/sbin/vgchange -a y /dev/vgroot
I use the "nash" shell from redhat, it take few place and have builtin
the mount/umount commands.
The LVM is compiled in the kernel and I have these files in my "initrd":
/bin/sh -> nash
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