Re: How to Rezize Partition on LVM

[ray <ray@aarden.us>]

I would like to than everyone for the input.  Here is how it was completed:

Boot into GUI mycomp as root

# df -h
Filesystem                    Size  Used Avail Use% Mounted on
/dev/dm-0                     8.2G  2.9G  4.9G  38% /
udev                           10M     0   10M   0% /dev
tmpfs                         3.2G  9.2M  3.2G   1% /run
tmpfs                         7.9G   68K  7.9G   1% /dev/shm
tmpfs                         5.0M  4.0K  5.0M   1% /run/lock
tmpfs                         7.9G     0  7.9G   0% /sys/fs/cgroup
/dev/sda1                     236M   46M  178M  21% /boot
/dev/mapper/mycomp--vg-var   2.7G  351M  2.2G  14% /var
/dev/mapper/mycomp--vg-tmp   360M  2.1M  335M   1% /tmp
/dev/mapper/mycomp--vg-home  427G  136M  405G   1% /home
tmpfs                         1.6G  4.0K  1.6G   1% /run/user/118
tmpfs                         1.6G  8.0K  1.6G   1% /run/user/0
root@mycomp:~# resize2fs /dev/mapper/mycomp--vg-home 5G
Filesystem at /dev/mapper/mycomp--vg-home is mounted on /home; on-line resizing required
resize2fs: On-line shrinking not supported

Rebooting into command line interface for root worked, the /home partition was not mounted.

---------------------------------------------------------------------------

# lvreduce -L 5G /dev/mapper/mycomp--vg-home
  WARNING: Reducing active and open logical volume to 5.00 GiB
  THIS MAY DESTROY YOUR DATA (filesystem etc.)
Do you really want to reduce home? [y/n]: y
  Size of logical volume mycomp-vg/home changed from 433.32 GiB (110931 extents) to 5.00 GiB (1280 extents).
  Logical volume home successfully resized