LVM Cheatsheet
As with all my cheatsheets, they are works in progress and will be continuously added to whenever I find a command that I need that it does not list. If there is something that you are looking for that is not listed, please visit the references. If you find a good reference that is not listed, please add it to the comments and I will merge it in.
Listing Items
sudo pvdisplay- List physical devices.sudo vgdisplay- List volume groups.sudo lvdisplay- List logical volumes.
Extend Logical Volume By Amount
sudo lvextend -L+[Number of GB to add]G -n /dev/[volume group name]/[logicial volume name]
Extend Logical Volume By Percentage Free
sudo lvextend -l 100%FREE /dev/$VG_NAME/$LV_NAME
Extend Logical Volume To Specified Size
sudo lvextend -L [New Size In GB]G -n /dev/[volume group name]/[logicial volume name]
Resize Filesystem
If you extend your LVM then you need to resize the filesystem in order to utilize it.
resize2fs /dev/[volume group name]/[logical volume name]
Create Logical Volume
Create an LVM by adding it to a Volume Group that already exists.
lvcreate -L [Size in GB]G [Volume Group Name]
... or to just use the entire space:
lvcreate -l 100%FREE [Volume Group Name]
Create Filesystem on New LVM
This creates an ext4 filesystem on the newly created LVM
sudo mkfs -t ext4 /dev/[volume group]/[Logical volume name]
Create Physical Volume
Create a physical volume on a drive. This is required before you can add it to a volume group or create a volume group from it.
pvcreate /dev/sd[x]
Create Volume Group
Volume groups are collections of physical volumes. To create one, you need to specify which volumes it should group/manage.
vgcreate [new volume group name] /dev/sd[x] /dev/sd[x] ...
Note: The ... signifies that you can specify any number of physical volumes. The [x] signifies different drive letters such as a or a1.
Add Physical Volume To Volume Group
vgextend [volume group name] /dev/sd[x]
Extend Volume Group
See "Add Physical Volume To Volume Group"
Destroy Volume Group
vgremove [volume group name]