How to create larger resouce (disk, mem, cpu) of CentOS7/LVM VM by vagrant-libvirt
- ref.
This diagram gives a overview of the main elements in an LVM system:
+-- Volume Group --------------------------------+
| |
| +----------------------------------------+ |
| PV | PE | PE | PE | PE | PE | PE | PE | PE | |
| +----------------------------------------+ |
| . . . . |
| . . . . |
| +----------------------------------------+ |
| LV | LE | LE | LE | LE | LE | LE | LE | LE | |
| +----------------------------------------+ |
| . . . . |
| . . . . |
| +----------------------------------------+ |
| PV | PE | PE | PE | PE | PE | PE | PE | PE | |
| +----------------------------------------+ |
| |
+------------------------------------------------+
System
$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.2 LTS"
$ vagrant --version
Vagrant 1.8.1
$ vagrant plugin list
fog-libvirt (0.0.3)
- Version Constraint: 0.0.3
vagrant-libvirt (0.0.35)
Configure Vagrantfile
| resouce | size |
|---|---|
| cpu | 4 |
| memory | 8GB (8192MB) |
| disk | 200GB |
Vagrant.configure(2) do |config|
config.vm.define :vm1 do |vm1|
vm1.vm.box = "centos/7"
vm1.vm.provider :libvirt do |domain|
domain.memory = 8192
domain.cpus = 4
domain.machine_virtual_size = 200
end
end
end
After "vagrant up", check each numbers.
- memory
[vagrant@localhost ~]$ free
total used free shared buff/cache available
Mem: 8010412 135600 7732552 8792 142260 7649876
Swap: 1572860 0 1572860
- cpu
[vagrant@localhost ~]$ cat /proc/cpuinfo | grep ^processor
processor : 0
processor : 1
processor : 2
processor : 3
- disk
[vagrant@localhost ~]$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00 38G 918M 37G 3% /
devtmpfs 3.9G 0 3.9G 0% /dev
tmpfs 3.9G 0 3.9G 0% /dev/shm
tmpfs 3.9G 8.4M 3.9G 1% /run
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/vda2 1014M 65M 950M 7% /boot
tmpfs 783M 0 783M 0% /run/user/1000
[vagrant@localhost ~]$ sudo fdisk -l | grep vda
Disk /dev/vda: 214.7 GB, 214748364800 bytes, 419430400 sectors
/dev/vda1 2048 4095 1024 83 Linux
/dev/vda2 * 4096 2101247 1048576 83 Linux
/dev/vda3 2101248 83886079 40892416 8e Linux LVM
[vagrant@localhost ~]$ mount | grep /dev/mapper/VolGroup00-LogVol00
/dev/mapper/VolGroup00-LogVol00 on / type xfs (rw,relatime,seclabel,attr2,inode64,noquota)
After "vagrant up", extend fs by LVM command
Check current LVM status before extend
PV (physical volume) (collection of PE(physical extent))
[vagrant@localhost ~]$ sudo pvdisplay
--- Physical volume ---
PV Name /dev/vda3
VG Name VolGroup00
PV Size 39.00 GiB / not usable 30.00 MiB
Allocatable yes (but full)
PE Size 32.00 MiB
Total PE 1247
Free PE 0
Allocated PE 1247
PV UUID 2GoPIF-shSp-sPzx-dk2v-erat-eFRD-h7mApJ
VG (volume group) (set of PV, LV)
[vagrant@localhost ~]$ sudo vgdisplay
--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 1
Act PV 1
VG Size 38.97 GiB
PE Size 32.00 MiB
Total PE 1247
Alloc PE / Size 1247 / 38.97 GiB
Free PE / Size 0 / 0
VG UUID 0xuC6p-2WS9-nJV3-bzFL-JdPV-S8JV-jGHAK2
LV (logical volume) (collection of LE(logical extent))
[vagrant@localhost ~]$ sudo lvdisplay
--- Logical volume ---
LV Path /dev/VolGroup00/LogVol00
LV Name LogVol00
VG Name VolGroup00
LV UUID Xo5DtX-P3er-b14c-QYxt-a7Ow-aPzX-0qDe2m
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2017-06-20 21:24:21 +0000
LV Status available
# open 1
LV Size 37.47 GiB
Current LE 1199
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:0
--- Logical volume ---
LV Path /dev/VolGroup00/LogVol01
LV Name LogVol01
VG Name VolGroup00
LV UUID Xb0aOa-9CNv-3DCQ-VCfi-10nQ-TeE7-o0SnsP
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2017-06-20 21:24:22 +0000
LV Status available
# open 2
LV Size 1.50 GiB
Current LE 48
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:1
Confirmation & Procedures
- Create /dev/vda3 by fdisk
- Extend PV with adding /dev/vda3() as PE
- Extend VG VolGroup00 with PV extended by 2.
- Extend LV(logical volume) with extended VG
- Resize XFS file system
1. Create /dev/vda3 by fdisk
- Add logical partition because the probability for future extending /dev/vda ...
- If you add new /dev/vdb, you can choose primary partition.
[vagrant@localhost ~]$ sudo fdisk /dev/vda
(snip)
Command (m for help): p
Disk /dev/vda: 214.7 GB, 214748364800 bytes, 419430400 sectors
(snip)
Device Boot Start End Blocks Id System
/dev/vda1 2048 4095 1024 83 Linux
/dev/vda2 * 4096 2101247 1048576 83 Linux
/dev/vda3 2101248 83886079 40892416 8e Linux LVM
Command (m for help): n
Partition type:
p primary (3 primary, 0 extended, 1 free)
e extended
Select (default e): e
Selected partition 4
First sector (83886080-419430399, default 83886080):
Using default value 83886080
Last sector, +sectors or +size{K,M,G} (83886080-419430399, default 419430399):
Using default value 419430399
Partition 4 of type Extended and of size 160 GiB is set
Command (m for help): p
Disk /dev/vda: 214.7 GB, 214748364800 bytes, 419430400 sectors
(snip)
Device Boot Start End Blocks Id System
/dev/vda1 2048 4095 1024 83 Linux
/dev/vda2 * 4096 2101247 1048576 83 Linux
/dev/vda3 2101248 83886079 40892416 8e Linux LVM
/dev/vda4 83886080 419430399 167772160 5 Extended
Command (m for help): n
All primary partitions are in use
Adding logical partition 5
First sector (83888128-419430399, default 83888128):
Using default value 83888128
Last sector, +sectors or +size{K,M,G} (83888128-419430399, default 419430399):
Using default value 419430399
Partition 5 of type Linux and of size 160 GiB is set
Command (m for help): p
Disk /dev/vda: 214.7 GB, 214748364800 bytes, 419430400 sectors
(snip)
Device Boot Start End Blocks Id System
/dev/vda1 2048 4095 1024 83 Linux
/dev/vda2 * 4096 2101247 1048576 83 Linux
/dev/vda3 2101248 83886079 40892416 8e Linux LVM
/dev/vda4 83886080 419430399 167772160 5 Extended
/dev/vda5 83888128 419430399 167771136 83 Linux
Command (m for help): t
Partition number (1-5, default 5): 5
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'
Command (m for help): p
Disk /dev/vda: 214.7 GB, 214748364800 bytes, 419430400 sectors
(snip)
Device Boot Start End Blocks Id System
/dev/vda1 2048 4095 1024 83 Linux
/dev/vda2 * 4096 2101247 1048576 83 Linux
/dev/vda3 2101248 83886079 40892416 8e Linux LVM
/dev/vda4 83886080 419430399 167772160 5 Extended
/dev/vda5 83888128 419430399 167771136 8e Linux LVM
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 16: Device or resource busy.
The kernel still uses the old table. The new table will be used at
the next reboot or after you run partprobe(8) or kpartx(8)
Syncing disks.
[vagrant@localhost ~]$ sudo partprobe
2. Extend PV with adding /dev/vda3() as PE
[vagrant@localhost ~]$ sudo pvcreate /dev/vda5
Physical volume "/dev/vda5" successfully created.
[vagrant@localhost ~]$ sudo pvdisplay
--- Physical volume ---
PV Name /dev/vda3
VG Name VolGroup00
PV Size 39.00 GiB / not usable 30.00 MiB
Allocatable yes (but full)
PE Size 32.00 MiB
Total PE 1247
Free PE 0
Allocated PE 1247
PV UUID 2GoPIF-shSp-sPzx-dk2v-erat-eFRD-h7mApJ
"/dev/vda5" is a new physical volume of "160.00 GiB"
--- NEW Physical volume ---
PV Name /dev/vda5
VG Name
PV Size 160.00 GiB
Allocatable NO
PE Size 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID IxnFr7-OUs2-g1z0-U1rY-vfhJ-sLYr-ZOB7Hc
3. Extend VG VolGroup00 with PV extended by 2.
[vagrant@localhost ~]$ sudo vgextend VolGroup00 /dev/vda5
Volume group "VolGroup00" successfully extended
[vagrant@localhost ~]$ sudo vgdisplay
--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 2
Act PV 2
VG Size 198.94 GiB
PE Size 32.00 MiB
Total PE 6366
Alloc PE / Size 1247 / 38.97 GiB
Free PE / Size 5119 / 159.97 GiB
VG UUID 0xuC6p-2WS9-nJV3-bzFL-JdPV-S8JV-jGHAK2
4. Extend LV(logical volume) with extended VG
[vagrant@localhost ~]$ sudo lvextend -l +100%FREE /dev/VolGroup00/LogVol00
Size of logical volume VolGroup00/LogVol00 changed from 37.47 GiB (1199 extents) to 197.44 GiB (6318 extents).
Logical volume VolGroup00/LogVol00 successfully resized.
[vagrant@localhost ~]$ sudo lvdisplay
--- Logical volume ---
LV Path /dev/VolGroup00/LogVol00
LV Name LogVol00
VG Name VolGroup00
LV UUID Xo5DtX-P3er-b14c-QYxt-a7Ow-aPzX-0qDe2m
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2017-06-20 21:24:21 +0000
LV Status available
# open 1
LV Size 197.44 GiB
Current LE 6318
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:0
--- Logical volume ---
LV Path /dev/VolGroup00/LogVol01
LV Name LogVol01
VG Name VolGroup00
LV UUID Xb0aOa-9CNv-3DCQ-VCfi-10nQ-TeE7-o0SnsP
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2017-06-20 21:24:22 +0000
LV Status available
# open 2
LV Size 1.50 GiB
Current LE 48
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:1
5. Resize XFS file system
[vagrant@localhost ~]$ sudo xfs_growfs /dev/mapper/VolGroup00-LogVol00
meta-data=/dev/mapper/VolGroup00-LogVol00 isize=512 agcount=4, agsize=2455552 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0 spinodes=0
data = bsize=4096 blocks=9822208, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=4796, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 9822208 to 51757056
[vagrant@localhost ~]$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00 198G 918M 197G 1% /
devtmpfs 3.9G 0 3.9G 0% /dev
tmpfs 3.9G 0 3.9G 0% /dev/shm
tmpfs 3.9G 8.4M 3.9G 1% /run
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/vda2 1014M 65M 950M 7% /boot
tmpfs 783M 0 783M 0% /run/user/1000
tmpfs 783M 0 783M 0% /run/user/0