Extending a swap partition for Linux

1. View current swap partition usage

[Email protected] ~]# swapon-s

Filename Type Size used priority

/DEV/SDA2 Partition 10485752 111296-1

2. Create a file to expand the swap partition

[[email protected] ~]# DD </dev/zero >/opt/swapfile1 bs=1m count=200

200+0 Records in

200+0 Records out

209715200 bytes (+ MB) copied, 0.492404 s, 426 MB/s

[Email protected] ~]#

3. Swap tags for files created in the second step, not formatted

[Email protected] ~]# Mkswap/opt/swapfile1

Setting up Swapspace version 1, size = 204796 KiB

No label, uuid=c6df54bc-d54b-4e54-a5d6-38d88adb512f --Used to create a boot auto mount, or you can use the full path

[Email protected] ~]#

4. Add file as swap partition, use now

[Email protected] ~]# Swapon/opt/swapfile1

5, check the current swap partition usage, found a more partition file

[Email protected] ~]# swapon-s

Filename Type Size used priority

/DEV/SDA2 Partition 10485752 111276-1

/opt/swapfile1 file 204792 0-2

[Email protected] ~]#

6, edit the/etc/fstab file, set the created swap partition file to boot automatically mount

[Email protected] ~]# Vim/etc/fstab

Add a row of red (according to the rules of the black line) as follows:

Uuid=51fb56d9-0986-4f8c-b61c-4fd3047ebafa swap swap defaults 0 0

uuid=c6df54bc-d54b-4e54-a5d6-38d88adb512f swap swap defaults 0 0

[[Email Protected]host ~]#

7. View current memory situation

[Email protected] ~]# free-m

Total used free shared buffers Cached

mem:1877 1780 97 0 14 884

-/+ buffers/cache:881 996

swap:10439 108 10331

The swap partition extension is complete.

Extending a swap partition for Linux