注：linux swap分区 采用lvm管理，调控可以采用下面的方法
一，
linux swap分区调控（swap分区lvm管理）
。查看 swap lv[root@testdb ~]# vgdisplay -v
Finding all volume groups
Finding volume group "VolGroup"
--- Volume group ---
VG Name VolGroup
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 1
Act PV 1
VG Size 357.38 GiB
PE Size 4.00 MiB
Total PE 91489
Alloc PE / Size 34512 / 134.81 GiB
Free PE / Size 56977 / 222.57 GiB
VG UUID q6q2yf-Isfw-DnkL-JeSN-uTvC-l5m2-M0HEco
--- Logical volume ---
LV Path /dev/VolGroup/lv_root
LV Name lv_root
VG Name VolGroup
LV UUID 0nFC6x-BsP2-7w0r-8bPV-Vw9j-whIz-EWj5Ba
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2013-09-16 08:41:58 +0800
LV Status available
# open 1
LV Size 29.30 GiB
Current LE 7500
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:0
--- Logical volume ---
LV Path /dev/VolGroup/lv_swap
LV Name lv_swap
VG Name VolGroup
LV UUID OJaxbf-MPay-cjep-L44c-UKDx-ZmGW-v24yUf
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2013-09-16 08:42:00 +0800
LV Status available
# open 2
LV Size 7.86 GiB
Current LE 2012
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:1
--- Logical volume ---
LV Path /dev/VolGroup/lv_home
LV Name lv_home
VG Name VolGroup
LV UUID HZvOuv-G8NW-2ZyW-3Ffl-H54i-Kmjp-8ndVqo
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2013-09-16 08:42:01 +0800
LV Status available
# open 1
LV Size 97.66 GiB
Current LE 25000
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:2
--- Physical volumes ---
PV Name /dev/sda2
PV UUID gQvj3L-kOPV-LILA-KPnD-a8W9-lgdE-09vtlQ
PV Status allocatable
Total PE / Free PE 91489 / 56977
swap 分区 lv 为/dev/VolGroup/lv_swap
二，
电脑资料
《linux swap分区调控（swap分区lvm管理）》(https://www.unjs.com)。扩大swap分区关闭交换分区
[root@testdb ~]# swapoff /dev/VolGroup/lv_swap
[root@testdb ~]# free -m
total used free shared buffers cached
Mem: 16081 14682 1398 0 83 13680