[CentOS] booting from copied ext3 software raid fs to normal fs
dan1
dan1 at edenpics.com
Tue Sep 27 05:49:23 UTC 2005
>> I tried your suggestion, but it can't even start linux in single mode.
>> I think that there is a mount problem, but I have double checked the
>> fstab
>> file seated on the backup drive and it seems fine to me. Therefore I
>> can't
>> understand what prevents the mount to be made properly. Would the vmlinuz
>> or
>> initrd images be dependent of the md or hd filesystem type or are they
>> exactly the same for both ? Else what other file should I touch that
>> involves the mounting operation ?
>
>If you boot the install CD in rescue mode, does it find the
>installed system correctly and mount it under /mnt/sysimage?
>You mentioned an attempt to set up md devices before - are
>the partition types set to ext3 in fdisk? Are you sure
>you have the correct contents in /boot/grub/grub.conf
>(the one in /etc is a symlink that can be broken if
>things aren't mounted as expected when you modify it).
>
>--
> Les Mikesell
> lesmikesell at gmail.com
Hello, Les.
Yes, I can run linux in rescue mode with the CD and see the correct root
partition. I have also checked the contents of the /boot/grub/grub.conf and
it is ok. In fstab I have also put ext3 for that backup disk.
below are my important files on the backup disk:
The output of the boot sequence output is the following:
Mounting sysfs
Creating /dev
Starting udev
Loading raid1.ko module
md: raid1 personnality registered as nr 3
Loading jbd.ko module
Loading ext3.ko module
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
Creating root device
Mounting root filesystem
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
mount: error 2 mounting none
Switching to new root
SElinux: Disabled at runtime
SElinux: Unregistering netfilter hooks
Then, it hangs here undefinitely.
Here is my menu.lst grub file on the backup disk I want to boot from:
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title CentOS (2.6.9-11.106.unsupported)
root (hd0,0)
kernel /vmlinuz-2.6.9-11.106.unsupported root=/dev/hda3
initrd /initrd-2.6.9-11.106.unsupported.img
Here is it's fstab:
none /dev/pts devpts gid=5,mode=620 0 0
none /dev/shm tmpfs defaults 0 0
none /proc proc defaults 0 0
none /sys sysfs defaults 0 0
/dev/hda1 /boot ext3 defaults 0 0
/dev/hda2 swap swap defaults 0 0
/dev/hda3 / ext3 defaults 0 0
/dev/fd0 /media/floppy auto
pamconsole,exec,noauto,managed 0 0
Thanks for any idea !
Regards,
Daniel
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