Hello linux-lvm, First, I am not an expert on LVM neither on initram disk (created with mkinitrd). There is one point which I want to understand and I hope I can get help here. I have Fedora Core 4 (on x386). fdisk -l shows that I have a Linux LVM partition. I opened the init file of the initrd on my machine (initrd-2.6.11-1.1369_FC4.img). This script have some lvm commands , like: lvm vgscan --ignorelockingfailure lvm vgchange -ay --ignorelockingfailure VolGroup00 It also has a call to mkdmnod (which creates /dev/mapper/control ; see man nash). after boot, I see that I have the following (on: /): /dev/mapper/VolGroup00-LogVol00 on / type ext3 (rw) The point which I want to understand is this: Is existence of LVM partition is a MUST so that this script will run and not cause panic on boot ? Suppose I would NOT have an LVM partition. (change its type with fdisk for example). Will the calls to "lvm vgscan" and "lvm vgchange" and "mkdmnod" and insmoding the dm* modules will not cause panic ? any help will be appreciated. Below here are the entry in grub.conf and the init script. The entry in grub.conf is : title Fedora Core (2.6.11-1.1369_FC4) root (hd0,1) kernel /vmlinuz-2.6.11-1.1369_FC4 ro root=/dev/VolGroup00/LogVol00 rhgb quiet nodma initrd /initrd-2.6.11-1.1369_FC4.img init script of initrd: (initrd-2.6.11-1.1369_FC4.img) #!/bin/nash mount -t proc /proc /proc setquiet echo Mounted /proc filesystem echo Mounting sysfs mount -t sysfs /sys /sys echo Creating /dev mount -o mode=0755 -t tmpfs /dev /dev mknod /dev/console c 5 1 mknod /dev/null c 1 3 mknod /dev/zero c 1 5 mkdir /dev/pts mkdir /dev/shm echo Starting udev /sbin/udevstart echo -n "/sbin/hotplug" > /proc/sys/kernel/hotplug echo "Loading dm-mod.ko module" insmod /lib/dm-mod.ko echo "Loading jbd.ko module" insmod /lib/jbd.ko echo "Loading ext3.ko module" insmod /lib/ext3.ko echo "Loading dm-mirror.ko module" insmod /lib/dm-mirror.ko echo "Loading dm-zero.ko module" insmod /lib/dm-zero.ko echo "Loading dm-snapshot.ko module" insmod /lib/dm-snapshot.ko /sbin/udevstart echo Making device-mapper control node mkdmnod echo Scanning logical volumes lvm vgscan --ignorelockingfailure echo Activating logical volumes lvm vgchange -ay --ignorelockingfailure VolGroup00 echo Creating root device mkrootdev /dev/root echo Mounting root filesystem mount -o defaults --ro -t ext3 /dev/root /sysroot echo Switching to new root switchroot --movedev /sysroot Regards, MR _______________________________________________ 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/
