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[Xen-users] Xen save takes a long time

To: Xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Xen save takes a long time
From: Jonathan Tripathy <jonnyt@xxxxxxxxxxx>
Date: Sun, 27 Jun 2010 22:48:52 +0100
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Hi Everyone,

By default, when I shutdown my Xen host, the system will try and save every DomU. I currently only have one DomU in my Xen host, however this takes about 7 minutes to save. Since this system will eventually go in a colo facility, and will host tens of customer VMs, waiting that kind of time isn't an option.

Can some please:

a) Explain why the DomU takes so long to save? Is this normal? The DomU has just a small 3G LVM disk which has hardly been used

b) Is it safe, in a hosting environment, to disable guest "saving" on Dom0 shutdown, and just resort do guest "shutdown"?


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