3-2 Create and Remove PV, Assign PVs to Vs and Create and Delete LVs

Question 1

after partitioning (picking linux lvm partition in gpt if using for lvm)

pvcreate /dev/xvda

Answer 1

after partioning

creates physical volume

Question 2

pvdisplay

Answer 2

Show available physical volumes

Question 3

Which filesystems can extend and/or reduce?

xfs

ext4

Answer 3

xfs can increase and cant reduce?

ext can both increase and decrease

Question 4

vgcreate newvgname /dev/disks

Answer 4

Create volume group and add /dev/disks to it

Question 5

vgdisplay

Answer 5

Show available volume groups

Question 6

lvcreate -n newlogicalvolume1 -L 100M VGname

lvcreate -n newlogicalvolume2 -L 400M VGname

afterwards

mkfs -t xfs /dev/VGname/newlogicalvolume1

mount /dev/VGname/newlogicalvolume1 /mnt/newdir

Answer 6

Create logical volume

• n • Volume name
• L • Size in bytes (1M, 1G, etc)
• l (lowercase l) size in extents (ex if PE size was 4 mb, then -l 2 means 8mb)

One volume group can have more than one LVM using diff amounts of it assigned when making LVM

Question 7

lvdisplay

Answer 7

Display logical volumes

Question 8

lvremove /dev/vgroup/lvolume

Answer 8

Remove logical volume

Question 9

pvremove /dev/disk

Answer 9

Remove physical volume

Question 10

vgremove /dev/vgroup

Answer 10

remove volume group

Question 11

partition with fdisk or gdisk

initialize partitions or new device (as whole) as physical volumes, with pvcreate /dev/xvda

make volume group, vgcreate

add physical volumes together into volume groups

make lvm on volume groups

Answer 12

how to add to a volume group that already exists

Question 13

vgdisplay

PE Size: Number

Answer 13

size of physical extents in volume group