Difference between revisions of "LVM"
From Alessandro's Wiki
Porcelinux (talk | contribs) |
|||
Line 3: | Line 3: | ||
= | = Get info command line = | ||
== Phisical Volumes == | |||
pvs | |||
== Volume Groups == | |||
vgs | |||
== Logical Volume == | |||
lvs | |||
= | = Phisical Volumes (PV) = | ||
pvs | pvs | ||
Line 34: | Line 35: | ||
Volume group "vg_1" successfully removed | Volume group "vg_1" successfully removed | ||
= Resizing out from Disk->PV->LV->Partition = | |||
* After resizing a physical drive this commands will claim the space gained to the file system. | |||
*resizing LVM linux partition to the new disk boundaries | |||
pvresize /dev/md1 | |||
* adding 100G | |||
lvextend -L+100G /dev/mapper/vg0-var | |||
* ext4 resizing command | |||
resize2fs /dev/mapper/vg0-var | |||
df -hT | |||
= Logical Volumes = | |||
== create a mirror volume == | == create a mirror volume == | ||
Revision as of 20:16, 6 April 2017
Get info command line
Phisical Volumes
pvs
Volume Groups
vgs
Logical Volume
lvs
Phisical Volumes (PV)
pvs PV VG Fmt Attr PSize PFree /dev/sda vg_1 lvm2 a-- 930.82g 0 /dev/sdb vg_1 lvm2 a-- 931.31g 931.31g
lvs -a -o +devices
add a disk to a PV
vgextend vg_1 /dev/sdb Volume group "vg_1" successfully extended
remove a disk from PV
vgreduce vg_1 /dev/sdb Removed "/dev/sdb" from volume group "vg_1"
delete a PV
vgremove vg_1 Volume group "vg_1" successfully removed
Resizing out from Disk->PV->LV->Partition
- After resizing a physical drive this commands will claim the space gained to the file system.
- resizing LVM linux partition to the new disk boundaries
pvresize /dev/md1
- adding 100G
lvextend -L+100G /dev/mapper/vg0-var
- ext4 resizing command
resize2fs /dev/mapper/vg0-var
df -hT
Logical Volumes
create a mirror volume
lvcreate -L 931g vg_1 -m 1 vg_1
create a mirror from existing and mounted volume
lvconvert -m1 vg_1/lv_home
- then we check the result:
# pvs;echo;vgs;echo;lvs PV VG Fmt Attr PSize PFree /dev/sda2 vg_1 lvm2 a-- 930.82g 0 /dev/sdb vg_1 lvm2 a-- 931.31g 56.33g
VG #PV #LV #SN Attr VSize VFree vg_1 2 3 0 wz--n- 1.82t 56.33g
LV VG Attr LSize Pool Origin Data% Move Log Copy% Convert lv_home vg_1 mwi-aom- 874.98g lv_home_mlog 100.00 lv_root vg_1 -wi-ao-- 50.00g lv_swap vg_1 -wi-ao-- 5.84g