LVM
Physical volume
pvcreate /dev/md125
[root@fuvs-sn1 ~]# pvdisplay /dev/md125
"/dev/md125" is a new physical volume of "9,10 TiB"
--- NEW Physical volume ---
PV Name /dev/md125
VG Name
PV Size 9,10 TiB
Allocatable NO
PE Size 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID 66qrEL-a4C2-5lcG-zVXP-Gltn-fYnx-wJtqVD
[root@fuvs-sn1 ~]# pvs
PV VG Fmt Attr PSize PFree
/dev/md125 lvm2 --- 9,10t 9,10t
Volume group
vgcreate vg1 /dev/md125
[root@fuvs-sn1 ~]# vgdisplay vg1
--- Volume group ---
VG Name vg1
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 1
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 0
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 9,10 TiB
PE Size 4,00 MiB
Total PE 2384350
Alloc PE / Size 0 / 0
Free PE / Size 2384350 / 9,10 TiB
VG UUID 5EtIkG-bnld-ZuXu-LBuk-lSrA-P3j3-hO5kla
vgs
vgscan
Logical volume
lvcreate --name 9T --size 9T vg1
# nebo
lvcreate --name 10T -l 100%FREE vg1
[root@fuvs-sn1 ~]# lvdisplay
--- Logical volume ---
LV Path /dev/vg1/9T
LV Name 9T
VG Name vg1
LV UUID wHjpoT-uq8x-XOma-6sGP-GcCC-fCUL-flY7Io
LV Write Access read/write
LV Creation host, time fuvs-sn1.ovirt.dragon.cz, 2017-03-31 10:28:50 +0200
LV Status available
# open 0
LV Size 9,00 TiB
Current LE 2359296
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 20480
Block device 253:3
lvs
lvscan
lvresize -l +100%FREE /dev/vg1/9T
lvrename vg1 9T 10T
e2fsck -f /dev/vg1/10T
resize2fs /dev/vg1/10T
Filesystem
Mount
[root@fuvs-sn1 ~]# blkid
...
/dev/mapper/vg1-9T: UUID="25fe3799-c76f-4a3a-93f9-4c9577c3b1b3" TYPE="ext4"
...
mkdir -p /exports/9T
vim /etc/fstab
...
# /dev/mapper/vg1-9T:
UUID=25fe3799-c76f-4a3a-93f9-4c9577c3b1b3 /exports/9T ext4 defaults 0 2
mount -a
df -h
Souborový systém Velikost Užito Volno Uži% Připojeno do
...
/dev/mapper/vg1-9T 9,0T 81M 8,5T 1% /exports/9T