Add new disk ( RAID 1 ) and extend capaticy ( LVM )
[root@01-ovm ~]# umount /home/
[root@01-ovm ~]# pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name ovm
PV Size 929.37 GiB / not usable 2.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 237917
Free PE 2
Allocated PE 237915
PV UUID Dc6XFm-Y1bt-SKDR-GP0b-7VuU-2OEF-zHmj8E
[root@01-ovm ~]# pvcreate /dev/sdb1
Physical volume "/dev/sdb1" successfully created
[root@01-ovm ~]# pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name ovm
PV Size 929.37 GiB / not usable 2.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 237917
Free PE 2
Allocated PE 237915
PV UUID Dc6XFm-Y1bt-SKDR-GP0b-7VuU-2OEF-zHmj8E
"/dev/sdb1" is a new physical volume of "930.39 GiB"
--- NEW Physical volume ---
PV Name /dev/sdb1
VG Name
PV Size 930.39 GiB
Allocatable NO
PE Size 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID 2tQuA7-1zun-d799-L86F-96z8-6k8Q-FKBFpT
[root@01-ovm ~]# vgdisplay
--- Volume group ---
VG Name ovm
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 5
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 4
Open LV 3
Max PV 0
Cur PV 1
Act PV 1
VG Size 929.36 GiB
PE Size 4.00 MiB
Total PE 237917
Alloc PE / Size 237915 / 929.36 GiB
Free PE / Size 2 / 8.00 MiB
VG UUID vBEcvK-33rW-owxL-qLUE-cG0L-c0xK-tUNwSV
[root@01-ovm ~]# vgdisplay ovm
--- Volume group ---
VG Name ovm
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 5
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 4
Open LV 3
Max PV 0
Cur PV 1
Act PV 1
VG Size 929.36 GiB
PE Size 4.00 MiB
Total PE 237917
Alloc PE / Size 237915 / 929.36 GiB
Free PE / Size 2 / 8.00 MiB
VG UUID vBEcvK-33rW-owxL-qLUE-cG0L-c0xK-tUNwSV
[root@01-ovm ~]# vgextend ovm /dev/sdb1
Volume group "ovm" successfully extended
[root@01-ovm ~]# vgdisplay
--- Volume group ---
VG Name ovm
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 6
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 4
Open LV 3
Max PV 0
Cur PV 2
Act PV 2
VG Size 1.82 TiB
PE Size 4.00 MiB
Total PE 476096
Alloc PE / Size 237915 / 929.36 GiB
Free PE / Size 238181 / 930.39 GiB
VG UUID vBEcvK-33rW-owxL-qLUE-cG0L-c0xK-tUNwSV
[root@01-ovm ~]# lvextend -l 100%VG /dev/mapper/ovm-home
Size of logical volume ovm/home changed from 681.13 GiB (174370 extents) to 1.57 TiB (412551 extents).
Logical volume home successfully resized
[root@01-ovm ~]# mount -a
[root@01-ovm ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/ovm-root 40G 9.6G 28G 26% /
tmpfs 3.7G 0 3.7G 0% /dev/shm
/dev/sda1 1.1G 63M 918M 7% /boot
/dev/mapper/ovm-home 671G 272G 365G 43% /home
[root@01-ovm ~]# lvdisplay /dev/ovm/home
--- Logical volume ---
LV Path /dev/ovm/home
LV Name home
VG Name ovm
LV UUID RPwrDG-nspM-uCWZ-gN9I-J2jp-BR4D-H63yq1
LV Write Access read/write
LV Creation host, time 01-ovm.ainosi.com, 2015-12-29 05:09:04 +0700
LV Status available
# open 0
LV Size 1.57 TiB
Current LE 412551
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:3
[root@01-ovm ~]# resize2fs /dev/mapper/ovm-home
resize2fs 1.43-WIP (20-Jun-2013)
Please run 'e2fsck -f /dev/mapper/ovm-home' first.
[root@01-ovm ~]# e2fsck -f /dev/mapper/ovm-home
e2fsck 1.43-WIP (20-Jun-2013)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/mapper/ovm-home: 73/44646400 files (5.5% non-contiguous), 73995131/178554880 blocks
[root@01-ovm ~]# resize2fs /dev/mapper/ovm-home
resize2fs 1.43-WIP (20-Jun-2013)
Filesystem at /dev/mapper/ovm-home is mounted on /home; on-line resizing required
old_desc_blocks = 43, new_desc_blocks = 101
The filesystem on /dev/mapper/ovm-home is now 422452224 blocks long.
[root@01-ovm ~]# partprobe
Warning: WARNING: the kernel failed to re-read the partition table on /dev/sda (Device or resource busy). As a result, it may not reflect all of your changes until after reboot.
Warning: WARNING: the kernel failed to re-read the partition table on /dev/sdb (Device or resource busy). As a result, it may not reflect all of your changes until after reboot.
[root@01-ovm ~]# mount -a
[root@01-ovm ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/ovm-root 40G 9.6G 28G 26% /
tmpfs 3.7G 0 3.7G 0% /dev/shm
/dev/sda1 1.1G 63M 918M 7% /boot
/dev/mapper/ovm-home 1.6T 272G 1.3T 18% /home
and this was before :
[root@01-ovm ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/ovm-root 40G 9.6G 28G 26% /
tmpfs 3.7G 0 3.7G 0% /dev/shm
/dev/sda1 1.1G 63M 918M 7% /boot
/dev/mapper/ovm-home 671G 272G 365G 43% /home
http://rgheck.blogspot.co.id/2012/07/how-to-add-to-lvm-drive.html
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