[dm-devel] Boot from SAN with device-mapper-multipath device

[Kumar, Vijay (STSD)]

Hi,

I am trying boot from SAN with DM-multipath devices as a root device. My
initrd images  contains following files :
./etc/multipath.conf
./etc/scsi_id.config
./etc/udev
./etc/udev/devices
./etc/udev/scripts
./etc/udev/scripts/ide-media.sh
./etc/udev/scripts/check-cdrom.sh
./etc/udev/scripts/MAKEDEV.dev
./etc/udev/scripts/pam_console.dev
./etc/udev/scripts/hotplug.dev
./etc/udev/permissions.d
./etc/udev/permissions.d/50-udev.permissions
./etc/udev/rules.d
./etc/udev/rules.d/40-multipath.rules
./etc/udev/rules.d/50-udev.rules
./init
./sys
./proc
./sysroot
./cpio
./loopfs
./dev
./dev/tty2
./dev/console
./dev/tty4
./dev/tty1
./dev/ram
./dev/tty3
./dev/null
./dev/systty
./sbin
/bin
./bin/insmod
./bin/multipath
./bin/modprobe
./bin/udevstart
./bin/hotplug
./bin/dmsetup
./bin/scsi_id
./bin/nash
./bin/udev
./bin/kpartx
./lib
./lib/dm-multipath.ko
./lib/qla2300.ko
./lib/scsi_mod.ko
./lib/multipath.ko
./lib/scsi_transport_fc.ko
./lib/dm-round-robin.ko
./lib/ext3.ko
./lib/dm-zero.ko
./lib/jbd.ko
./lib/qla2xxx.ko
./lib/sd_mod.ko
./lib/dm-mod.ko

My /boot/grub/menu.lst looks like
title RHEL4 U4 -SANBOOT 
        root (hd0,0)
        kernel /vmlinuz ro
root=/dev/mapper/3600508b400102be10000100023750000p2  rhgb quiet
        initrd /initrdsb

But during the boot time I am getting "kernel panic" with message as
"mount: error  mounting ext3 ".  Please let me know if Device-Mapper
multipath can claim the system disk for creating  dm device ? 

Thanks and Regards,
Vijay
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