[DRBD-user] Migrate data to bigger disks

Stefan Seifert nine at detonation.org
Thu Feb 26 10:59:00 CET 2009

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


On Thursday, 26. February 2009, Jürgen Scholz wrote:

> > umount /data
> > resize2fs /dev/drbd0
> > mount -o rw /dev/drbd0 /data
>
> DO NOT DO THAT! IT WILL DESTROY YOUR FILESYSTEM!
> I did that just a few days ago. - I've never had the need to resize an
> ext3 fs before.
> You need to remove the ext3 journal first. Then resize. And after that
> add the journal again.
> Remove: tune2fs -O ^has_journal /dev/drbd0
> Add:    tune2fs -j /dev/drbd0
>
> After my experience I looked at
> http://www.howtoforge.com/linux_resizing_ext3_partitions - seems fairly
> complete.

I wonder what happened for you and how old the software is, that was used for 
the HOWTO.
Even on the oldest system I have (openSUSE 10.2, about 3 years old) resize2fs 
can do online enlarging of a mounted ext3 file system. I've done it quite 
often and never needed to deactivate any journal. I also did offline 
enlarging and shrinking (even on a drbd backend) without any hassle.

Regards,
Stefan



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