Converting a non Raid redhat system to a Linux system with disk mirroring

From: ddl (ld_at_mmm12345.com)
Date: 03/24/04 

Date: Wed, 24 Mar 2004 09:02:17 +0800

Hi all,

I am using RedHat 7.3 as my mail server with kernel 2.4.20-28.7. I would
like to install RAID mirroring on it without formating the whole system.

I have tried the section "Converting a non-RAID RedHat System to run on
Software RAID" from the Software-RAID-HOWTO.pdf file but I could not get it
work.

I could not get the resize2fs command done from Step-11 done on the root
filesystem ( /dev/md0) in that section.
It always says that resize2fs cannot be used on an already mounted
filesystem. I tried to copy the resize2fs to /sbin and then unmount the root
filesystem. The resize of the
root filesystem was then successful but after I rebooted the system I
received a kernel panic error saying something like could not read
superblock.

I tried to search around but could not find any suitable solution.

Please advise if anyone has done a successful RAID convertion (without
formatting).

Thanks a million

ld

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