Voir :
lv_attrs
man 8 lvs
Extents are the smallest units of space that you can allocate in LVM. Physical extents (PE) and logical extents (LE) has the default size of 4 MiB that you can configure. All extents have the same size. When you create a logical volume (LV) within a VG, LVM allocates physical extents on the PVs
lvcreate -l 100%FREE -n newlv vg_data
lvs --readonly --noheadings --nosuffix --units=m /dev/mapper/applivg-lv_plop -o lv_size vgs --readonly --noheadings --nosuffix --units=m applivg -o vgfree
# pvcreate /dev/sda3 Device /dev/sda3 not found (or ignored by filtering).
# pvcreate -vvv /dev/sda3 2>&1|grep '/dev/sda3'
/dev/sda3: Skipping: Too small to hold a PV
vgchange --deltag T9 --deltag T10 --addtag T13 --addtag T14 grant pvs -o pv_tags /dev/sda2 vgs -o vg_tags /dev/VolGroup00 lvs -o lv_tags /dev/VolGroup00/LogVol00
Use the following command to list all the logical volumes with the database tag
lvs @database
Use the following command to list the currently active host tags
lvm tags
Resize the PV when some data was allocated at the end of the LVM.
pvs -v --segments /dev/sda5 pvmove --alloc anywhere /dev/sda5:yyyy-end pvs -v --segments /dev/sda5