Expandindo Local Storage no Xen 6
E ai galera aqui eu vou demonstrar como podemos expandir o local storage no Xen Server 6, quando utilizamos um Xen Server em stand alone geralmente o armazenamento das VMs fica no local storage com isso as vezes precisamos aumentar esta área de armazenamento que é um VG ;)
Acrescente um novo disco no Xen Server.
Após inserir um novo disco vamos mandar o Xen listar o novo disco
fdisk -l WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sda: 64.4 GB, 64424509440 bytes 256 heads, 63 sectors/track, 7801 cylinders Units = cylinders of 16128 * 512 = 8257536 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 7802 62914559+ ee EFI GPT Disk /dev/sdb: 32.2 GB, 32212254720 bytes 255 heads, 63 sectors/track, 3916 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk /dev/sdb doesn't contain a valid partition table
O Xen reconheceu um novo disco de 32.2 GB, agora vamos mandar listar os nossos grupos de volumes
vgdisplay -v
Finding all volume groups
Finding volume group "VG_XenStorage-9f43fd7b-92c1-00a1-6eba-ebea622c56c4"
--- Volume group ---
VG Name VG_XenStorage-9f43fd7b-92c1-00a1-6eba-ebea622c56c4
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 12
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 51.99 GB
PE Size 4.00 MB
Total PE 13309
Alloc PE / Size 2055 / 8.03 GB
Free PE / Size 11254 / 43.96 GB
VG UUID Jy3G3l-Wq0c-PR9T-eypB-CbmX-Tl3V-FB974H
--- Logical volume ---
LV Name /dev/VG_XenStorage-9f43fd7b-92c1-00a1-6eba-ebea622c56c4/MGT
VG Name VG_XenStorage-9f43fd7b-92c1-00a1-6eba-ebea622c56c4
LV UUID eZsVES-buwZ-0umA-5So3-cVJR-X42L-6ATFop
LV Write Access read/write
LV Status available
# open 0
LV Size 4.00 MB
Current LE 1
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 1024
Block device 252:0
--- Logical volume ---
LV Name /dev/VG_XenStorage-9f43fd7b-92c1-00a1-6eba-ebea622c56c4/VHD-e822caa5-f42c-4d49-9264-8ca3216f6fd3
VG Name VG_XenStorage-9f43fd7b-92c1-00a1-6eba-ebea622c56c4
LV UUID jMoVQn-hKeb-B9lm-QTjo-8tMk-ofIn-PPCYg1
LV Write Access read/write
LV Status NOT available
LV Size 8.02 GB
Current LE 2054
Segments 1
Allocation inherit
Read ahead sectors auto
--- Physical volumes ---
PV Name /dev/sda3
PV UUID 9VkHhh-SYEY-x4zV-fvOF-45AI-3qkY-dF8bgj
PV Status allocatable
Total PE / Free PE 13309 / 11254
Neste grupo de volumes temos somente uma partição fazendo parte dele que é /dev/sda3.
Para acrescentar um novo disco no grupo de volumes precisamos do seu nome que neste caso é VG_XenStorage-9f43fd7b-92c1-00a1-6eba-ebea622c56c4, notem que o tamanho do VG é 51.99 GB.
Agora vamos efetuar a expansão do grupo de volumes agora.
vgextend -v VG_XenStorage-9f43fd7b-92c1-00a1-6eba-ebea622c56c4 /dev/sdb
Checking for volume group "VG_XenStorage-9f43fd7b-92c1-00a1-6eba-ebea622c56c4"
No physical volume label read from /dev/sdb
Set up physical volume for "/dev/sdb" with 62914560 available sectors
Zeroing start of device /dev/sdb
Physical volume "/dev/sdb" successfully created
Adding physical volume '/dev/sdb' to volume group 'VG_XenStorage-9f43fd7b-92c1-00a1-6eba-ebea622c56c4'
Volume group "VG_XenStorage-9f43fd7b-92c1-00a1-6eba-ebea622c56c4" will be extended by 1 new physical volumes
Creating volume group backup "/etc/lvm/backup/VG_XenStorage-9f43fd7b-92c1-00a1-6eba-ebea622c56c4" (seqno 13).
Volume group "VG_XenStorage-9f43fd7b-92c1-00a1-6eba-ebea622c56c4" successfully extended
Agora vamos mandar listar novamente o grupo de volumes
vgdisplay -v
Finding all volume groups
Finding volume group "VG_XenStorage-9f43fd7b-92c1-00a1-6eba-ebea622c56c4"
--- Volume group ---
VG Name VG_XenStorage-9f43fd7b-92c1-00a1-6eba-ebea622c56c4
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 13
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 0
Max PV 0
Cur PV 2
Act PV 2
VG Size 81.98 GB
PE Size 4.00 MB
Total PE 20988
Alloc PE / Size 2055 / 8.03 GB
Free PE / Size 18933 / 73.96 GB
VG UUID Jy3G3l-Wq0c-PR9T-eypB-CbmX-Tl3V-FB974H
--- Logical volume ---
LV Name /dev/VG_XenStorage-9f43fd7b-92c1-00a1-6eba-ebea622c56c4/MGT
VG Name VG_XenStorage-9f43fd7b-92c1-00a1-6eba-ebea622c56c4
LV UUID eZsVES-buwZ-0umA-5So3-cVJR-X42L-6ATFop
LV Write Access read/write
LV Status available
# open 0
LV Size 4.00 MB
Current LE 1
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 1024
Block device 252:0
--- Logical volume ---
LV Name /dev/VG_XenStorage-9f43fd7b-92c1-00a1-6eba-ebea622c56c4/VHD-e822caa5-f42c-4d49-9264-8ca3216f6fd3
VG Name VG_XenStorage-9f43fd7b-92c1-00a1-6eba-ebea622c56c4
LV UUID jMoVQn-hKeb-B9lm-QTjo-8tMk-ofIn-PPCYg1
LV Write Access read/write
LV Status NOT available
LV Size 8.02 GB
Current LE 2054
Segments 1
Allocation inherit
Read ahead sectors auto
--- Physical volumes ---
PV Name /dev/sda3
PV UUID 9VkHhh-SYEY-x4zV-fvOF-45AI-3qkY-dF8bgj
PV Status allocatable
Total PE / Free PE 13309 / 11254
PV Name /dev/sdb
PV UUID Uh0E4U-vq6d-QeF4-2m03-ygC5-Z2Dk-rV5W0q
PV Status allocatable
Total PE / Free PE 7679 / 7679
Agora o nosso grupo de volumes tem dois dispositivos que são /dev/sda3 e /dev/sdb e agora o grupo de volumes tem 81.98 GB é o que vai estar disponível para a criação de novas VMs.
Agora somente precisamos mandar fazer um scan no dispositivo Local Storage, vamos listar os dispositivos
xe sr-list
uuid ( RO) : 9f43fd7b-92c1-00a1-6eba-ebea622c56c4
name-label ( RW): Local storage
name-description ( RW):
host ( RO): xen01
type ( RO): lvm
content-type ( RO): user
uuid ( RO) : d6db0f72-5b2c-17bf-1b33-a06622936b29
name-label ( RW): DVD drives
name-description ( RW): Physical DVD drives
host ( RO): xen01
type ( RO): udev
content-type ( RO): iso
uuid ( RO) : 7838edbb-f9e8-8591-568c-4a19ceb085fb
name-label ( RW): XenServer Tools
name-description ( RW): XenServer Tools ISOs
host ( RO): xen01
type ( RO): iso
content-type ( RO): iso
uuid ( RO) : ff76927c-3fba-3dbe-0689-ab241f377557
name-label ( RW): Removable storage
name-description ( RW):
host ( RO): xen01
type ( RO): udev
content-type ( RO): disk
Agora vamos mandar dar um scan no Local storage para que ele reconheça o novo tamanho do VG
xe sr-scan uuid=9f43fd7b-92c1-00a1-6eba-ebea622c56c4
Agora vamos mandar dar um update nele
xe sr-update uuid=9f43fd7b-92c1-00a1-6eba-ebea622c56c4
Pronto o Xen já vai estar reconhecendo o Local Storage com o novo tamanho.