On 16.06.2011 19:23, Geoff Nordli wrote:
Is there a way to quiesce a disk to take a file system snapshot?
Pausing a VM implicitly completes all outstanding async I/O requests,
which includes the dirty parts of the cache.
If you are using cached i/o then it would need to flush the cache as well.
The guest has its own cache, and we don't have control over that...
So the result of taking a snapshot will be an image of limited
consistency. This is the reason why a proper snapshot of a VM includes
the entire state of the system, including RAM, device state and so on.
Klaus
Thanks,
Geoff
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