Re: [CentOS] Seeking pointers to info about LVM migration and performance

Bart Schaefer wrote:

On 7/6/07, John R Pierce pierce@hogranch.com wrote:

...

umount /dev/sdb1 tunefs -j /dev/sdb1 vi /etc/fstab (and, change ext2 to ext3 on the mount line for this filesystem) mount /dev/sdb1

and voila, its EXT3 now, with journalling.

Thanks, John, but is that really the whole answer? Once it's ext3 it can be put into a volume group with no further ado?

I would think that (particularly with a striped LVM such as Johnny mentioned) there has to be something else invovled.

You would need to copy the info off, create partitions, then PVs, then VG(s), LVs ... then use "mke2fs -j" to make the file systems on the LVs ... then copy the files back.