On Sun, Oct 18, 2015 at 10:24:39AM -0400, Rich Freeman wrote: > On Sat, Oct 17, 2015 at 12:36 PM, Xavier Gnata <[email protected]> wrote: > > 2) Disabling copy-on-write for just the VM image directory. > > Unless this has changed, doing this will also disable checksumming. I > don't see any reason why it has to, but it does. So, I avoid using > this at all costs.
It has to be disabled because if you enable it, there's a race condition: since you're overwriting existing data (rather than CoWing it), you can't update the checksums atomically. So, in the interests of consistency, checksums are disabled. Hugo. -- Hugo Mills | Nothing wrong with being written in Perl... Some of hugo@... carfax.org.uk | my best friends are written in Perl. http://carfax.org.uk/ | PGP: E2AB1DE4 | dark
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