Estendere disco LVM in Ubuntu Server 14 o CentOS 7 VmWare
- Utilizzare il comando parted per verificare l’effettivo spazio libero non allocato.
root@cloud:~# parted
GNU Parted 2.3
Viene usato /dev/sda
Benvenuti in GNU Parted. Digitare “help” per l’elenco dei comandi.
(parted) print free
Modello: VMware Virtual disk (scsi)
Disco /dev/sda: 805GB
Dimensione del settore (logica/fisica): 512B/512B
Tabella delle partizioni: msdos
Numero Inizio Fine Dimensione Tipo File system Flag
32,3kB 1049kB 1016kB Spazio libero
1 1049kB 256MB 255MB primary ext2 avvio
256MB 257MB 1048kB Spazio libero
2 257MB 805GB 805GB extended
5 257MB 215GB 214GB logical lvm
6 215GB 644GB 429GB logical
7 644GB 805GB 161GB logical
(parted) q
- creare una nuova partizione
root@CloudServer:~# cfdisk
Una volta aperto il programma selezionare la riga dello spazio libero interessato a questo punto premere su Nuovo selezionare partizione logica tipo LVM poi premere sul pulsante Scrivi e poi esci.
- controllare l’avvenuta creazione della partizione, nel mio caso /dev/sda7
root@cloud:~# fdisk -l /dev/sda
Disk /dev/sda: 805.3 GB, 805306368000 bytes
255 testine, 63 settori/tracce, 97906 cilindri, totale 1572864000 settori
Unità = settori di 1 * 512 = 512 byte
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Identificativo disco: 0x00067251
Dispositivo Boot Start End Blocks Id System
/dev/sda1 * 2048 499711 248832 83 Linux
/dev/sda2 501758 1572863999 786181121 5 Esteso
/dev/sda5 501760 419428351 209463296 8e Linux LVM
/dev/sda6 419428415 1258291199 419431392+ 83 Linux
/dev/sda7 1258291263 1572863999 157286368+ 83 Linux
- creare il volume fisico per sda7
root@CloudServer:~# pvcreate /dev/sda7 Physical volume "/dev/sda7" successfully created
5. controllare i volumi fisici
root@cloud:~# pvdisplay
— Physical volume —
PV Name /dev/sda5
VG Name ubuntu-vg
PV Size 199,76 GiB / not usable 2,00 MiB
Allocatable yes (but full)
PE Size 4,00 MiB
Total PE 51138
Free PE 0
Allocated PE 51138
PV UUID v2vX73-9zrg-EVfd-Zbvu-pRQj-vCD5-Vg7eTA
— Physical volume —
PV Name /dev/sda6
VG Name ubuntu-vg
PV Size 400,00 GiB / not usable 4,97 MiB
Allocatable yes (but full)
PE Size 4,00 MiB
Total PE 102399
Free PE 0
Allocated PE 102399
PV UUID XbvqTN-1Sh1-txwp-V6F3-s4kt-alZj-Qa5d30
“/dev/sda7” is a new physical volume of “150,00 GiB”
— NEW Physical volume —
PV Name /dev/sda7
VG Name
PV Size 150,00 GiB
Allocatable NO
PE Size 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID deULNo-2OWM-CekT-RCm1-4sKt-C13m-k4U8vL
- estendere il nuovo volume creato (sda7) dandogli lo stesso VG name del volume principale (sda6), nel mio caso ubuntu-vg
root@CloudServer:~# vgextend ubuntu-vg /dev/sda7 Volume group "ubuntu-vg" successfully extended
- controllare il nome del volume logico da estendere (nel mio caso /dev/ubuntu-vg/root)
root@cloud:~# lvdisplay
— Logical volume —
LV Path /dev/ubuntu-vg/root
LV Name root
VG Name ubuntu-vg
LV UUID J9C1Ov-0zu3-qHXn-kAjJ-BQPc-KiVn-Om7CcF
LV Write Access read/write
LV Creation host, time ubuntu, 2016-06-06 16:49:38 +0200
LV Status available
# open 1
LV Size 595,75 GiB
Current LE 152513
Segments 2
Allocation inherit
Read ahead sectors auto
– currently set to 256
Block device 252:0
— Logical volume —
LV Path /dev/ubuntu-vg/swap_1
LV Name swap_1
VG Name ubuntu-vg
LV UUID hIOCtP-VwLS-Vcfa-d6ml-SQyY-2B3t-fz7mem
LV Write Access read/write
LV Creation host, time ubuntu, 2016-06-06 16:49:38 +0200
LV Status available
# open 2
LV Size 4,00 GiB
Current LE 1024
Segments 1
Allocation inherit
Read ahead sectors auto
– currently set to 256
Block device 252:1
- estendiamo il volume logico
root@cloud:~# lvextend -l+100%FREE /dev/ubuntu-vg/root
Extending logical volume root to 745,75 GiB
Logical volume root successfully resized
- Estendiamo il file system per UBUNTU
root@cloud:~# resize2fs /dev/mapper/ubuntu–vg-root
resize2fs 1.42.9 (4-Feb-2014)
Filesystem at /dev/mapper/ubuntu–vg-root is mounted on /; on-line resizing required
old_desc_blocks = 38, new_desc_blocks = 47
The filesystem on /dev/mapper/ubuntu–vg-root is now 195493888 blocks long.
- Estendiamo il file system per CentOS
xfs_growfs /dev/centos/root
meta-data=/dev/mapper/centos-root isize=256 agcount=4, agsize=2455296 blks
= sectsz=512 attr=2, projid32bit=1
= crc=0 finobt=0 spinodes=0
data = bsize=4096 blocks=9821184, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=0
log =internal bsize=4096 blocks=4795, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 9821184 to 20317184
- Tutto ok adesso un controllino
root@cloud:~# df -h File system Dim. Usati Dispon. Uso% Montato su udev 2,0G 12K 2,0G 1% /dev tmpfs 396M 1,2M 395M 1% /run /dev/dm-0 734G 555G 148G 79% / none 4,0K 0 4,0K 0% /sys/fs/cgroup none 5,0M 0 5,0M 0% /run/lock none 2,0G 76K 2,0G 1% /run/shm none 100M 48K 100M 1% /run/user /dev/sda1 236M 71M 153M 32% /boot Facile no.... Ciao a tutti