[CentOS] enlarging partition and its filesystem
Wes James
comptekki at gmail.com
Thu May 19 06:26:20 UTC 2016
Can you get buy with using lvm features, i.e., just add the chunk to the
volume you want.
Use cfdisk to create a new partition (sudo cfdisk /dev/sda)
Select the unused space, create new partition and then select write, then
quit.
reboot for changes to take. Go in to lvm, then finally use resize2fs and
your extra space will now be used in the system.
$ sudo lvm
lvm> pvcreate /dev/sda4
Physical volume "/dev/sda4" successfully created
lvm> pvs
PV VG Fmt Attr PSize PFree
/dev/sda2 vg_c6 lvm2 a-- 60.43g 0
/dev/sda3 vg_c6 lvm2 a-- 17.20g 0
/dev/sda4 lvm2 --- 19.53g 19.53g
lvm> vgextend vg_c6 /dev/sda4
Volume group "vg_c6" successfully extended
lvm> lvextend -l +100%FREE /dev/vg_c6/lv_home
Size of logical volume vg_c6/lv_home changed from 22.06 GiB (5648
extents) to 41.59 GiB (10647 extents).
Logical volume lv_home successfully resized
lvm> quit
Exiting.
$ sudo resize2fs /dev/vg_c6/lv_home
resize2fs 1.41.12 (17-May-2010)
Filesystem at /dev/vg_c6/lv_home is mounted on /home; on-line resizing
required
old desc_blocks = 1, new_desc_blocks = 3
Performing an on-line resize of /dev/vg_c6/lv_home to 10902528 (4k) blocks.
The filesystem on /dev/vg_c6/lv_home is now 10902528 blocks long.
-------------
-wes
On Wed, May 18, 2016 at 1:33 PM, Fred Smith <fredex at fcshome.stoneham.ma.us>
wrote:
> Hi all!
>
> I've got a VM at work running C6 on HyperV (no, its not my fault,
> that's what the company uses. I'd rather gag myself than own one
> of th ose things.)
>
> I ran out of disk space in the VM, so the admin enlarged the virtual disk.
> but now I realize I don't know how to enlarge the partition and its
> filesystem.
>
> I'll be googling, but in case I miss it, it'd be great if someone could
> point me in the right direction.
>
> thanks!
>
> Fred
>
> --
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