Marco 10-4

I. Extending the logical Volume:

Lvextend

-L [+]#/PATH/TO/LV

RESIZE2FS:

RESIZE2FS/PATH/TO/LV 5G

How big-P/PATH/TO/LV can expand

Two. Reduce the logical Volume:

Note: 1. Can not be reduced online, you must first uninstall

2. Ensure that the size of the reduced space can still store all the original data

3. Before shrinking, you should force the file to be checked to ensure that the file system is in a consistent state

Resize2fs

RESIZE2FS/PATH/TO/PV 3G

lvreduce-l[-]#/PATH/TO/LV

Re-mount

Df-lh

Umount

E2fsck-f

Three. Snapshot volumes

1. The life cycle is the entire data length, within which the amount of data growth cannot exceed the size of the snapshot volume

2. The snapshot volume should be read-only

3. In the same volume group as the original volume

Lvcreate

-S

-P R|w

lvcreate-l#-N slv_name-p r/path/to/lv

Marco 10-4