I've been asked to increase the disk size of an LVM managed CentOS (virtual) server. The current partition table is as follows:
Disk /dev/vda: 429.5 GB, 429496729600 bytes, 838860800 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: 0x000ba858
Device Boot Start End Blocks Id System
/dev/vda1 * 2048 1026047 512000 83 Linux
/dev/vda2 1026048 104857599 51915776 8e Linux LVM
/dev/vda3 104857600 314572799 104857600 8e Linux LVM
/dev/vda4 314572800 629145599 157286400 8e Linux LVM
There's a total of 4 primary partitions and there's about 100GB of free space. Since the maximum allowed primary partitions is limited to 4 a new one can't be added.
When using ext4 partitions I think I could just use fdisk, delete /dev/vda4 and re-add it with the same starting position but a new end position. However, LVM isn't my forte. Will I be able to do the same thing with LVM? I assume one would also need to call the lvextend
command as well as a resize2fs
/xfs_growfs
afterwards?
Output of lvdisplay:
--- Logical volume ---
LV Path /dev/vg_directadmin/swap
LV Name swap
VG Name vg_directadmin
LV UUID qD1ib9-TAqx-gkKb-9ybC-Jg7g-653o-dDehoj
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2015-07-08 15:02:22 +0200
LV Status available
# open 2
LV Size 1.00 GiB
Current LE 256
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:1
--- Logical volume ---
LV Path /dev/vg_directadmin/lv_tmp
LV Name lv_tmp
VG Name vg_directadmin
LV UUID ezqLis-CBQt-IiZK-7BjX-gvf5-b476-xxlkTe
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2015-07-08 15:02:22 +0200
LV Status available
# open 1
LV Size 1.00 GiB
Current LE 256
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:2
--- Logical volume ---
LV Path /dev/vg_directadmin/lv_root
LV Name lv_root
VG Name vg_directadmin
LV UUID FfvRs5-bQav-72te-GxcF-wlan-hWoT-Ir3I36
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2015-07-08 15:02:23 +0200
LV Status available
# open 1
LV Size 297.50 GiB
Current LE 76160
Segments 3
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:0
Best Answer
Took the afternoon to study up on LVM and found a solution. So, my initial solution turns out to be a working solution. Here's what I did.
fdisk
to make/dev/vda4
bigger. To do that delete partition 4, re-add it as a primary partition and let it make use of all available sectors. It'll ask you about deleting the LVM2_member signature, make sure to answer no. Set partition type to Linux LVM (8e). Write the new partition table.pvresize /dev/vda4
.lvextend -l +100%FREE /dev/vg_directadmin/lv_root
./dev/vg_directadmin/lv_root
with resize2fs (or xfs_growfs on CentOS 7 if I'm not mistaken). I had to do a disk check as well withe2fsck -f /dev/vg_directadmin/lv_root
followed byresize2fs /dev/vg_directadmin/lv_root
.Hope this helps someone else. Linux LVM on HowToForge is a helpful tutorial as well!