[linux-lvm] LVM reducing.
pcaulfie at redhat.com
Fri Feb 20 08:18:03 UTC 2004
On Thu, Feb 19, 2004 at 06:49:04PM +0100, Christian Reiss wrote:
> I am running the LVM2 version now, as LVM1 corrupted the VG.
> So i converted it to LVM2 (figured it would re-do the
> master-data-thingy), and it works.
> Now, (presumably Heinz :) how can I safely reduce the size under LVM2?
> LVM1 had this e2fsadm jiggamagic-thingy-thing - anything LVM2 offers to
> safely reduce the data?
There is no e2fsadm for LVM2.
What I tend to do is to reduce the filesystem by a little more than I need, then
reduce the LV by the "correct" amount, then resize the the filesystem to fill
the LV. It's a little bit of a faff but it avoids any nasty accidents or
eg: To remove 2Gig from an LV
# resize_reiserfs -s -2300M /dev/vg00/fs
# lvreduce -L -2G /dev/vg00/fs
# resize_reiserfs /dev/vg00/fs
That works for ext2/3 etc as well as reiser, just use the relevant resize
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