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

Johnny Hughes johnny at centos.org
Sun Jul 8 18:43:54 UTC 2007


Bart Schaefer wrote:
> On 7/6/07, John R Pierce <pierce at 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.

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