On 11/11/2011 04:43 PM, Ryan Harper wrote:
== Image Formats ==
Image formats are not safe to use with live migration. The reason is that
QEMU caches data for image formats and does not have a mechanism to flush
those caches. The following attempts to describe the issues with the
various formats
=== QCOW2 ===
QCOW2 caches two forms of data, cluster metadata (L1/L2 data, refcount
table, etc) and mutable header information (file size, snapshot entries,
etc).
This data needs to be discarded before after migration starts.
before after?
pick one =)
Er, the sentence is intelligible with either word. I've updated the wiki with
something that actually makes sense :-)
Regards,
Anthony Liguori
