I do the following steps in order to increase the swap size
but when I start with swapoff /dev/mapper/rootvg-swap , then its stuck for along time and not return the prompt
why we can do to solve this
swapoff /dev/mapper/rootvg-swap
lvresize -L +5g /dev/mapper/rootvg-swap
mkswap /dev/mapper/rootvg-swap
swapon /dev/mapper/rootvg-swap
vmstat 1
procs -----------memory---------- ---swap-- -----io---- --system-- ----- cpu------
r b swpd free buff cache si so bi bo in cs us sy id wa st
1 0 2027848 127788 28804 18490972 105 38 180 211 25 59 17 6 64 13 0
1 0 2027848 126944 28812 18490972 0 0 0 124 1073 1491 16 1 82 1 0
0 0 2027848 126076 28828 18490956 0 0 0 104 727 1236 6 0 94 0 0
0 0 2027848 126076 28828 18491008 0 0 0 0 452 979 2 0 98 0 0
1 0 2027696 130960 28828 18486500 480 0 480 92 985 1415 21 4 69 5 0
0 0 2027696 130984 28844 18486572 0 0 0 43 421 984 1 0 98 1 0