[CentOS] Disks for virtualization
David Dyer-Bennet
dd-b at dd-b.netThu Jul 15 15:21:59 UTC 2010
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I'm not looking to move virtual machines between physical platforms; just want some protection between applications sharing a physical server. They'll all be using local disk in one form or another. Much the easiest to manage is just having the virtual machine use a file in dom0 as its disk. Without pre-allocating, this lets me over-commit somewhat to cover unknown future needs, for example. The alternative seems to be LVM partitions. Those are easy to throw around too, but after enough creation / destruction you can end up with your free-space fragmented so you can't use it, right? But I imagine there's a performance benefit to LVM partitions over dom0 files. For things like foswiki for internal use by a development team, and Nagios monitoring for about a dozen systems, do i need that extra performance? Does anybody have a rule-of-thumb for the difference? -- David Dyer-Bennet, dd-b at dd-b.net; http://dd-b.net/ Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/ Photos: http://dd-b.net/photography/gallery/ Dragaera: http://dragaera.info
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