I have a Centos 7.1 server (no gui).
Im trying to figure out how to extend the partition since its getting full.

output are:

fdisk /dev/sdb

Disk /dev/sdb: 392.2 GB, 392227192832 bytes, 766068736 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x00000000

Device Boot Start End Blocks Id System
/dev/sdb1 63 314572799 157286368+ 8e Linux LVM
/dev/sdb2 314572800 524287999 104857600 8e Linux LVM



lvdisplay -v


Using logical volume(s) on command line.
Finding all volume groups.
--- Logical volume ---
LV Path /dev/home/lv_home
LV Name lv_home
VG Name home
LV UUID yGcPFq-WUqZ-56aE-bDXs-Asqd-TnFM-jIQkAa
LV Write Access read/write
LV Creation host, time manualweb01.c2.se, 2014-08-29 12:57:25 +0200
LV Status available
# open 1
LV Size 249.99 GiB
Current LE 63998
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:3

--- Logical volume ---
LV Path /dev/centos/root
LV Name root
VG Name centos
LV UUID LWhI39-sHUg-5XBd-R9F3-xOcG-zEJh-Jjbm0i
LV Write Access read/write
LV Creation host, time localhost, 2014-08-29 14:08:29 +0200
LV Status available
# open 1
LV Size 19.53 GiB
Current LE 5000
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:1

--- Logical volume ---
LV Path /dev/centos/swap
LV Name swap
VG Name centos
LV UUID lqSGE3-2m2E-EH1Q-c5na-tCi6-nHpT-lNsQB2
LV Write Access read/write
LV Creation host, time localhost, 2014-08-29 14:08:30 +0200
LV Status available
# open 2
LV Size 7.81 GiB
Current LE 2000
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:0

--- Logical volume ---
LV Path /dev/centos/tmp
LV Name tmp
VG Name centos
LV UUID fd1GbH-eZfp-m7sR-MyWL-JQcK-PyWK-Sl8twn
LV Write Access read/write
LV Creation host, time localhost, 2014-08-29 14:08:31 +0200
LV Status available
# open 1
LV Size 1.95 GiB
Current LE 500
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:2

--- Logical volume ---
LV Path /dev/centos/var
LV Name var
VG Name centos
LV UUID qd4Q9V-9z9x-bLNX-XEyW-vzkf-nNVM-GtrxFo
LV Write Access read/write
LV Creation host, time localhost, 2014-08-29 14:08:32 +0200
LV Status available
# open 1
LV Size 20.50 GiB
Current LE 5248
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:4



partitions are xfs.

Anyone have any ideas on how to extend this? Its /dev/home/lv_home that i want to extend.

Your output would be so much easier to read if you had formatted it as code. In case you want to reformat your question, see my signature for instructions.

To extend a logical volume, use commands vgs or vgsdisplay to see if there is any free space. Then run lvextend with the appropriate size option, either upper-case -L or lower-case -l.

If there is not enough free space in the volume group, you can try to grow the underlying physical volume(s). If the logical volume in question is located on /dev/sdb, parted or gparted may be able to help, but partitions can only be grown if there is free space directly next to them. Or add a physical volume to the volume group; the command is vgextend.

Once the logical volume has the desired size, use xfs_growfs to adjust the size of the filesystem. Be aware that XFS can only be grown, not shrunk.

Redhat has an excellent LVM guide - I'm sure CentOS still has references to the RH doco.