Adding memory to a virtual machine - Revision history

Frodo at 22:48, 10 March 2014

2014-03-10T22:48:28Z

← Older revision		Revision as of 22:48, 10 March 2014
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	[[Category:~~Internal~~]]		[[Category:Sysadmin]]

Therese at 20:18, 22 January 2014

2014-01-22T20:18:00Z

← Older revision		Revision as of 20:18, 22 January 2014
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	<currentMemory unit='KiB'>8388608</currentMemory>		<currentMemory unit='KiB'>8388608</currentMemory>
	This changes the currently used memory from 4GB to 8GB and raises the max memory that can be allocated w/o rebotting from 4GB to 16GB		This changes the currently used memory from 4GB to 8GB and raises the max memory that can be allocated w/o rebotting from 4GB to 16GB
	virsh define ~/~~pan~~.xml.tmp # Upload the new configuration to the hypervisor (overwrites pan.slot-31....)		virsh define ~/your_vm.xml.tmp # Upload the new configuration to the hypervisor (overwrites pan.slot-31....)
	virsh shutdown your_vm		virsh shutdown your_vm
	virsh start your_vm		virsh start your_vm

Therese at 20:17, 22 January 2014

2014-01-22T20:17:19Z

← Older revision		Revision as of 20:17, 22 January 2014
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	virsh list # Show all VMs		virsh list # Show all VMs
	virsh dumpxml your_vm > ~/~~pan~~.xml.tmp # Extract pan configuration for local modification		virsh dumpxml your_vm > ~/your_vm.xml.tmp # Extract pan configuration for local modification
	vim ~/your_vm.xml.tmp		vim ~/your_vm.xml.tmp
	These lines		These lines

Therese at 20:16, 22 January 2014

2014-01-22T20:16:57Z

← Older revision		Revision as of 20:16, 22 January 2014
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	Use "virsh", either locally:		Use "virsh", either locally:
	root@~~rocky~~$ virsh (COMMANDS HERE)		root@your_hypervisor$ virsh (COMMANDS HERE)
	or remotely:		or remotely:
	~~teague~~@~~spinaltap~~$ virsh --connect qemu:///~~rocky.cluster.uoft.bkslab.org~~/system (COMMANDS HERE)		root@foreman_machine$ virsh --connect qemu:///your_hypervisor/system (COMMANDS HERE)

	We want to change the configuration for a running VM. Doing this requires dumping the current configuration to a text (XML) file, editing it, and pushing the changes to the hypervisor. I will show this with the local version for brevity.		We want to change the configuration for a running VM. Doing this requires dumping the current configuration to a text (XML) file, editing it, and pushing the changes to the hypervisor. I will show this with the local version for brevity.

	virsh list # Show all VMs		virsh list # Show all VMs
	virsh dumpxml ~~pan.slot-31.rack-1.donnelly.cluster.uoft.bkslab.org~~ > ~/pan.xml.tmp # Extract pan configuration for local modification		virsh dumpxml your_vm > ~/pan.xml.tmp # Extract pan configuration for local modification
	vim ~/~~pan~~.xml.tmp		vim ~/your_vm.xml.tmp
	These lines		These lines
	<memory unit='KiB'>4194304</memory>		<memory unit='KiB'>4194304</memory>
Line 17:		Line 17:
	This changes the currently used memory from 4GB to 8GB and raises the max memory that can be allocated w/o rebotting from 4GB to 16GB		This changes the currently used memory from 4GB to 8GB and raises the max memory that can be allocated w/o rebotting from 4GB to 16GB
	virsh define ~/pan.xml.tmp # Upload the new configuration to the hypervisor (overwrites pan.slot-31....)		virsh define ~/pan.xml.tmp # Upload the new configuration to the hypervisor (overwrites pan.slot-31....)
	virsh shutdown ~~pan.slot-31.rack-1.donnelly.cluster.uoft.bkslab.org~~		virsh shutdown your_vm
	virsh start ~~pan.slot-31.rack-1.donnelly.cluster.uoft.bkslab.org~~		virsh start your_vm

	To remove jobs:		To remove jobs:
	qconf -as ~~pan.slot-27.rack-1.pharmacy.cluster.uoft.bkslab.org # I forgot to make pan a submit node, needed for deleting~~		qconf -as your_vm
	qstat -u '*' \| tail -n+3 \| cut -f2 -d\ \| xargs -L 250 qdel -f # -L 250 means send chunks of 250 job ids to qdel		qstat -u '*' \| tail -n+3 \| cut -f2 -d\ \| xargs -L 250 qdel -f # -L 250 means send chunks of 250 job ids to qdel


	[[Category:Internal]]		[[Category:Internal]]

Therese at 18:41, 22 January 2014

2014-01-22T18:41:44Z

← Older revision		Revision as of 18:41, 22 January 2014
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	virsh list # Show all VMs		virsh list # Show all VMs
	virsh dumpxml pan.slot-31.rack-1.donnelly.cluster.uoft.bkslab.org > ~/pan.xml.tmp # Extract pan ~~(sgemaster)~~ configuration for local modification		virsh dumpxml pan.slot-31.rack-1.donnelly.cluster.uoft.bkslab.org > ~/pan.xml.tmp # Extract pan configuration for local modification
	vim ~/pan.xml.tmp		vim ~/pan.xml.tmp
	These lines		These lines

Therese at 18:40, 22 January 2014

2014-01-22T18:40:46Z

← Older revision		Revision as of 18:40, 22 January 2014
Line 7:		Line 7:

	virsh list # Show all VMs		virsh list # Show all VMs
	~~# Extract pan (sgemaster) configuration for local modification~~		virsh dumpxml pan.slot-31.rack-1.donnelly.cluster.uoft.bkslab.org > ~/pan.xml.tmp # Extract pan (sgemaster) configuration for local modification
	virsh dumpxml pan.slot-31.rack-1.donnelly.cluster.uoft.bkslab.org > ~/pan.xml.tmp
	vim ~/pan.xml.tmp		vim ~/pan.xml.tmp
	These lines		These lines

Therese at 18:39, 22 January 2014

2014-01-22T18:39:50Z

← Older revision		Revision as of 18:39, 22 January 2014
Line 7:		Line 7:

	virsh list # Show all VMs		virsh list # Show all VMs
	virsh dumpxml pan.slot-31.rack-1.donnelly.cluster.uoft.bkslab.org > ~/pan.xml.tmp ~~# Extract pan (sgemaster) configuration for local modification~~		# Extract pan (sgemaster) configuration for local modification
			virsh dumpxml pan.slot-31.rack-1.donnelly.cluster.uoft.bkslab.org > ~/pan.xml.tmp
	vim ~/pan.xml.tmp		vim ~/pan.xml.tmp
	These lines		These lines

Frodo: Created page with "Use "virsh", either locally: root@rocky$ virsh (COMMANDS HERE) or remotely: teague@spinaltap$ virsh --connect qemu:///rocky.cluster.uoft.bkslab.org/system (COMMANDS HERE) W..."

2014-01-22T18:11:45Z

Created page with "Use "virsh", either locally: root@rocky$ virsh (COMMANDS HERE) or remotely: teague@spinaltap$ virsh --connect qemu:///rocky.cluster.uoft.bkslab.org/system (COMMANDS HERE) W..."

New page

Use "virsh", either locally:
root@rocky$ virsh (COMMANDS HERE)
or remotely:
teague@spinaltap$ virsh --connect qemu:///rocky.cluster.uoft.bkslab.org/system (COMMANDS HERE)

We want to change the configuration for a running VM. Doing this requires dumping the current configuration to a text (XML) file, editing it, and pushing the changes to the hypervisor. I will show this with the local version for brevity.

virsh list # Show all VMs
virsh dumpxml pan.slot-31.rack-1.donnelly.cluster.uoft.bkslab.org > ~/pan.xml.tmp # Extract pan (sgemaster) configuration for local modification
vim ~/pan.xml.tmp
These lines
<memory unit='KiB'>4194304</memory>
<currentMemory unit='KiB'>4194304</currentMemory>
to this
<memory unit='KiB'>16777216</memory>
<currentMemory unit='KiB'>8388608</currentMemory>
This changes the currently used memory from 4GB to 8GB and raises the max memory that can be allocated w/o rebotting from 4GB to 16GB
virsh define ~/pan.xml.tmp # Upload the new configuration to the hypervisor (overwrites pan.slot-31....)
virsh shutdown pan.slot-31.rack-1.donnelly.cluster.uoft.bkslab.org
virsh start pan.slot-31.rack-1.donnelly.cluster.uoft.bkslab.org

To remove jobs:
qconf -as pan.slot-27.rack-1.pharmacy.cluster.uoft.bkslab.org # I forgot to make pan a submit node, needed for deleting
qstat -u '*' | tail -n+3 | cut -f2 -d\ | xargs -L 250 qdel -f # -L 250 means send chunks of 250 job ids to qdel

[[Category:Internal]]