Resizing Volume Groups

Sprawlie · February 7, 2017

So, My last Sys-admin has left me in a particular predicament with setting up of this servers hard drives in a very particular, and frustrating way.

For example: Here is the ouput of PVS

PV VG Fmt Attr PSize PFree
/dev/sda1 vg_Centos00 lvm2 a-- 16.00g 0
/dev/sdc1 vg_Centos01 lvm2 a-- 548.00m 0
/dev/sdd1 vg_Centos02 lvm2 a-- 1020.00m     0
/dev/sde1 vg_Centos03 lvm2 a--    2.00g     0
/dev/sdf1 vg_Centos04 lvm2 a-- 1020.00m     0
/dev/sdg1 vg_Centos05 lvm2 a-- 1020.00m     0
/dev/sdh1 vg_Centos06 lvm2 a--    15.00g 10.00g
/dev/sdi1 vg_Centos07 lvm2 a--    20.00g 15.00g
/dev/sdj1 vg_Centos08 lvm2 a--    30.00g 27.00g
/dev/sdk1 vg_Centos09 lvm2 a--    2.50g     0

And the output of my DF and mount points: (hope clear)

rootfs 16G 628M 15G 5% /
devtmpfs 1.9G 260K 1.9G 1% /dev
tmpfs 524M 432K 496M 1% /dev/shm
/dev/mapper/vg_Centos00-LogVol00
16G 628M 15G 5% /
/dev/sdb1 379M 96M 264M 27% /boot
/dev/mapper/vg_Centos01-LogVol00
524M 432K 496M 1% /dev/shm
/dev/mapper/vg_Centos06-LogVol00
4.8G 31M 4.6G 1% /home
/dev/mapper/vg_Centos02-LogVol00
988M 14M 924M 2% /tmp
/dev/mapper/vg_Centos08-LogVol00
2.9G 24M 2.7G 1% /u
/dev/mapper/vg_Centos07-LogVol00
4.8G 1.4G 3.3G 29% /usr
/dev/mapper/vg_Centos03-LogVol00
2.0G 1.9G 17M 100% /var
/dev/mapper/vg_Centos04-LogVol00
988M 311M 627M 34% /var/log
/dev/mapper/vg_Centos05-LogVol00
988M 29M 909M 4% /var/log/audit

Suffice it to say: The problem is now that /var is full. And the volume group vg_Centos03 which logical volume is mounted on is 100% at capacity. However, as clearly seen, 06, 07 and 08 have sufficient space.

I would like to re-allocate that free space in one of the other volume groups and assign it to CentOS03.

is this possible?