Adding swap - Revision history

Hutch at 20:56, 27 December 2007

Hutch — Thu, 27 Dec 2007 20:56:36 GMT

←Older revision		Revision as of 20:56, 27 December 2007
Line 2:		Line 2:

	Swap needed to be increased to 8GB from 4GB on a RHEL 5 system. All hard drive space was already allocated, so I had to create a swap file (''/files0/swapfile'' in this example) instead of a swap partition.		Swap needed to be increased to 8GB from 4GB on a RHEL 5 system. All hard drive space was already allocated, so I had to create a swap file (''/files0/swapfile'' in this example) instead of a swap partition.
-
-	== Procedure ==

	$ '''free'''		$ '''free'''
Line 10:		Line 8:
	-/+ buffers/cache: 293980 7883404		-/+ buffers/cache: 293980 7883404
	Swap: '''4192912''' 0 4192912		Swap: '''4192912''' 0 4192912
		+
		+	== Procedure ==

	* Create the 4GB swap file.		* Create the 4GB swap file.

Hutch at 20:56, 27 December 2007

Hutch — Thu, 27 Dec 2007 20:56:23 GMT

←Older revision		Revision as of 20:56, 27 December 2007
Line 2:		Line 2:

	Swap needed to be increased to 8GB from 4GB on a RHEL 5 system. All hard drive space was already allocated, so I had to create a swap file (''/files0/swapfile'' in this example) instead of a swap partition.		Swap needed to be increased to 8GB from 4GB on a RHEL 5 system. All hard drive space was already allocated, so I had to create a swap file (''/files0/swapfile'' in this example) instead of a swap partition.
		+
		+	== Procedure ==

	$ '''free'''		$ '''free'''

Hutch at 20:53, 27 December 2007

Hutch — Thu, 27 Dec 2007 20:53:25 GMT

←Older revision		Revision as of 20:53, 27 December 2007
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	# '''mkswap /files0/swapfile'''		# '''mkswap /files0/swapfile'''
	Setting up swapspace version 1, size = 4294963 kB		Setting up swapspace version 1, size = 4294963 kB
-	* Enable the ~~swapfile~~ immediately.	+	* Enable the swap file immediately.
	# '''swapon /files0/swap file'''		# '''swapon /files0/swap file'''
	* Enable the swap file after reboot.		* Enable the swap file after reboot.
	Add the following to ''/etc/fstab'':		Add the following to ''/etc/fstab'':
	/files0/swapfile swap swap defaults 0 0		/files0/swapfile swap swap defaults 0 0
		+	* Confirm the swap file has been added to swap.
		+	$ '''free'''
		+	total used free shared buffers cached
		+	Mem: 8177384 8058892 118492 0 116668 7534592
		+	-/+ buffers/cache: 407632 7769752
		+	Swap: '''8387208''' 0 8387208
		+
	== Links ==		== Links ==
	* [http://www.redhat.com/docs/manuals/enterprise/RHEL-3-Manual/sysadmin-guide/s1-swap-adding.html Adding Swap Space]		* [http://www.redhat.com/docs/manuals/enterprise/RHEL-3-Manual/sysadmin-guide/s1-swap-adding.html Adding Swap Space]

Hutch: /* Links */

Hutch — Thu, 27 Dec 2007 20:50:54 GMT

Links

←Older revision		Revision as of 20:50, 27 December 2007
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	/files0/swapfile swap swap defaults 0 0		/files0/swapfile swap swap defaults 0 0
	== Links ==		== Links ==
-	* [ http://www.redhat.com/docs/manuals/enterprise/RHEL-3-Manual/sysadmin-guide/s1-swap-adding.html Adding Swap Space ]	+	* [http://www.redhat.com/docs/manuals/enterprise/RHEL-3-Manual/sysadmin-guide/s1-swap-adding.html Adding Swap Space]

Hutch at 20:50, 27 December 2007

Hutch — Thu, 27 Dec 2007 20:50:43 GMT

←Older revision		Revision as of 20:50, 27 December 2007
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	Add the following to ''/etc/fstab'':		Add the following to ''/etc/fstab'':
	/files0/swapfile swap swap defaults 0 0		/files0/swapfile swap swap defaults 0 0
		+	== Links ==
		+	* [ http://www.redhat.com/docs/manuals/enterprise/RHEL-3-Manual/sysadmin-guide/s1-swap-adding.html Adding Swap Space ]

Hutch at 20:50, 27 December 2007

Hutch — Thu, 27 Dec 2007 20:50:05 GMT

←Older revision		Revision as of 20:50, 27 December 2007
Line 1:		Line 1:
	== Overview ==		== Overview ==

-	Swap needed to be increased to 8GB from 4GB on a RHEL 5 system. All hard drive space was already allocated, so I had to create a ~~swapfile~~ (''/files0/swapfile'' in this example) instead of a swap partition.	+	Swap needed to be increased to 8GB from 4GB on a RHEL 5 system. All hard drive space was already allocated, so I had to create a swap file (''/files0/swapfile'' in this example) instead of a swap partition.

	$ '''free'''		$ '''free'''
Line 9:		Line 9:
	Swap: '''4192912''' 0 4192912		Swap: '''4192912''' 0 4192912

-	* Create the 4GB ~~swapfile~~.	+	* Create the 4GB swap file.
	# '''dd if=/dev/zero of=/files0/swapfile bs=1024 count=4194304'''		# '''dd if=/dev/zero of=/files0/swapfile bs=1024 count=4194304'''
	4194304+0 records in		4194304+0 records in
	4194304+0 records out		4194304+0 records out
	4294967296 bytes (4.3 GB) copied, 36.1759 seconds, 119 MB/s		4294967296 bytes (4.3 GB) copied, 36.1759 seconds, 119 MB/s
-	* Setup the ~~swapfile~~.	+	* Setup the swap file.
	# '''mkswap /files0/swapfile'''		# '''mkswap /files0/swapfile'''
	Setting up swapspace version 1, size = 4294963 kB		Setting up swapspace version 1, size = 4294963 kB
	* Enable the swapfile immediately.		* Enable the swapfile immediately.
-	# '''swapon /files0/~~swapfile~~'''	+	# '''swapon /files0/swap file'''
-	* Enable the ~~swapfile~~ after reboot.	+	* Enable the swap file after reboot.
	Add the following to ''/etc/fstab'':		Add the following to ''/etc/fstab'':
	/files0/swapfile swap swap defaults 0 0		/files0/swapfile swap swap defaults 0 0

Hutch: New page: == Overview == Swap needed to be increased to 8GB from 4GB on a RHEL 5 system. All hard drive space was already allocated, so I had to create a swapfile (''/files0/swapfile'' in this exam...

Hutch — Thu, 27 Dec 2007 20:49:30 GMT

New page: == Overview == Swap needed to be increased to 8GB from 4GB on a RHEL 5 system. All hard drive space was already allocated, so I had to create a swapfile (''/files0/swapfile'' in this exam...

New page

== Overview ==

Swap needed to be increased to 8GB from 4GB on a RHEL 5 system. All hard drive space was already allocated, so I had to create a swapfile (''/files0/swapfile'' in this example) instead of a swap partition.

$ '''free'''
total used free shared buffers cached
Mem: 8177384 4098900 4078484 0 133220 3671700
-/+ buffers/cache: 293980 7883404
Swap: '''4192912''' 0 4192912

* Create the 4GB swapfile.
# '''dd if=/dev/zero of=/files0/swapfile bs=1024 count=4194304'''
4194304+0 records in
4194304+0 records out
4294967296 bytes (4.3 GB) copied, 36.1759 seconds, 119 MB/s
* Setup the swapfile.
# '''mkswap /files0/swapfile'''
Setting up swapspace version 1, size = 4294963 kB
* Enable the swapfile immediately.
# '''swapon /files0/swapfile'''
* Enable the swapfile after reboot.
Add the following to ''/etc/fstab'':
/files0/swapfile swap swap defaults 0 0