Code inspection shows that qcow2_update_cluster_refcount() no longer
calls bdrv_flush(). This issue has been fixed.
** Changed in: qemu
Status: Incomplete => Fix Released
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Looking through old bug tickets... have this issue been fixed, i.e.
could we close this ticket nowadays? Or is there still something left to
do?
** Changed in: qemu
Status: New => Incomplete
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Skipping the bdrv_flush() in update_cluster_refcount() gives a huge
speed-up from over 3 minutes down to 1 second. I think Kevin already
discovered this in the past.
Now we need to figure out how to safely perform the updates without
flushing after each L2 table refcount increment.
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You
