On Thu, December 21, 2006 10:17 am, Aleksandar Milivojevic wrote:
> As long as the start of partition does not change (or in other words,
> partition only gets resized, but not moved), you will not loose any
> data. The steps are:
>
> 1. Expanding file system
> - expand partition using fdisk
> - expand physical volume
> - expand logical volume
> - expand file system
>
> 2. Shrinking file system
> - shrink file system
> - shrink logical volume
> - shrink physical volume (currently not always possible)
> - shrink partition
OK, here's what I have so far. Been trying various things with --test and
not getting anywhere:
# fdisk -l
Disk /dev/hda: 41.1 GB, 41174138880 bytes
255 heads, 63 sectors/track, 5005 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 13 104391 83 Linux
/dev/hda2 14 5005 40098240 8e Linux LVM
# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
17G 5.7G 11G 35% /
/dev/hda1 99M 22M 73M 24% /boot
none 506M 0 506M 0% /dev/shm
# pvs
PV VG Fmt Attr PSize PFree
/dev/hda2 VolGroup00 lvm2 a- 38.22G 19.22G
# lvs
LV VG Attr LSize Origin Snap% Move Log Copy%
LogVol00 VolGroup00 -wi-ao 17.25G
LogVol01 VolGroup00 -wi-ao 1.75G
# lvresize -L +10G --test /dev/mapper/VolGroup00-LogVol00 /dev/hda2
Test mode: Metadata will NOT be updated.
Volume group mapper doesn't exist
>
> Well, you can't fdisk /dev/hda2. It's partition. Hopefully you
> haven't exited from fdisk using "w" command (it could really screw up
> whatever was on hda2). You probably wanted to "fdisk /dev/hda".
Oops, ya, thanks.