[linux-lvm] LVM rootfs and cramfs as ramdisk
Francis SOUYRI
francis.souyri at wanadoo.fr
Tue Feb 4 00:02:02 UTC 2003
Hi Jan,
On my system lvm driver is in the kernel (no module).
/#!/bin/sh
I mount /etc with a tmpfs to have /etc in rw (I do not need the
"/etc/fstab").
mount -t tmpfs none /etc
Now I mount /proc because "vgscan" need to access "/proc/partitions" (I
do not need the "/etc/fstab").
mount -t proc none /proc
Finaly I can scan for the volume groups and activate these volume groups.
echo "Scanning for Volume Groups..."
/sbin/vgscan
echo "Activating Volume Groups"
/sbin/vgchange -a y
I umount /proc and /etc because, I do not need now the "/etc" (you need
to do a vgscan in the startup script of your system to update the
"/etc/lvm*" files in the real "/etc"), and the kernel after the mount of
the real / mount the /proc.
umount /proc
umount /etc
I do not need any files in the "/etc" I only need to create temporaries
files with vgscan.
Best regards.
Francis
Jan H. van Gils wrote:
>>Hi Jan,
>>
>>
>
>Hi Francis,
>
>
>
>>You need "/etc" in rw for this you can mount "/etc" in the "linuxrc"
>>script using a tmpfs filesystem like this:
>>
>>
>>
>
>Thanks for the information.
>I was already wondering if I was the only one with this problem.
>
>But what about the init files that are normaly in "/etc" ?
>I can imagion that a tmpfs is an empty filesystem.
>Or do I not fully understand what you mount option does ?
>
>
>
>>/#!/bin/sh
>>...
>>mount -t tmpfs none /etc
>>mount -t proc none /proc
>>echo "Scanning for Volume Groups..."
>>/sbin/vgscan
>>echo "Activating Volume Groups"
>>/sbin/vgchange -a y
>>...
>>umount /proc
>>umount /etc
>>/
>>I used "romfs" for the "initrd" ramdisk.
>>
>>Best regards.
>>
>>Francis
>>
>>
>>
>
>With regards Jan
>
>
>----
>With regards Jan H. van Gils
>Internet web-page http://www.Knoware.NL/users/janvg/
>Internet e-mail address JanVG at Knoware.NL
>RIPE Whois JHG5-RIPE, 6BONE Whois JHG1-6BONE
>
>
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>
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