I'm really sorry that I didn't see that call when I submit this...
I was writing a experimental block image driver and found it runs too slow. It
turned out that it calls bdrv_flush itself and the flush on ->file is than
called again from block.c
thanks for your confirmation!
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** Changed in: qemu
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1353545
Title:
QED does not deliver flush on synchronized write
Status in QEMU:
Invalid
Bug descr
Public bug reported:
At least one flush method should be provided by qed driver
(common/co/aio).
I was doing "sync write" benchmarking on varies qemu supported formats
(on ssd). I was surprised that QED shows significant high performance
over several other formats (qcow2/vmdk/vdi..). In some test
