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On Sun, 2013-04-21 at 12:32 -0400, Randy Barlow wrote: |
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> LVM gives a lot of |
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> flexibility in managing virtual machines, so I'd highly recommend it. |
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I should mention one specific advantage to using LVM over file-based |
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images: I believe you will find that LVM performs better. This is due to |
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avoiding the duplicated filesystem overhead that would occur in the |
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file-based image approach. If the guest wants to fsync(), for example, |
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both filesystems need to be involved (the guest's, and the host's). With |
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LVM, you still have the host processing the LVM bits of that process, |
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but at least the host's filesystem doesn't need to be involved. |
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Of course, giving the guest it's own raw block device (a disk, or a |
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partition) would also have this advantage, so here I'm mostly just |
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comparing LVM to the "easy" file-backed disk image approach. |
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-- |
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Randy Barlow |
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