Fedora Cookbook: Resizing a logical volume
On Fri, Dec 28, 2007 at 12:02:40PM +0100, moi wrote:
> Root FS resizes imho usually requires the Rescue mode. Perhaps when growing,
> but shrinking is a bit tough...
Growing can be done on-line. That means no interruption of service, no
need to umount the filesystem, etc..
Shrinking must be off-line, still. And in XFS, shrinking isn't supported
> You may - in rescue mode - import the Volume Group (when using LVM) and do
> the resize operations.
Note that usually there's no symlinks for lvm utilities in the rescue
mode of the installer, so you'll have to use the following syntax:
> Do not forget to do a partprobe /dev/xda, as the
> kernel will still be using the old filesystem tables when resizing
Eh? No, that's not needed, The lvm partitions aren't /dev/hdx or sdx.
You do have to rescan the partition table if you changed the partition
of the PV device.
> (one of
> our customers did a shrink on the root partition and ran fsck, this made a
> lot of errors afterwards).
Oh, that's bad. Very bad. You don't shrinking filesystem after shrinking
the block device, you do it *before*. That's the opposite of growing.
* lvm vgscan
* lvm vgchange -ay
* resize2fs /dev/foo/bar 10G
* lvm lvresize -L 10G foo/bar
fedora-list mailing list
To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list