[Qemu-block] [Question] the problem about driver-mirror

[张敏]

I test the function of driver-mirror when run io stress test in vm.
The fio's model is 128 iodepth, 4K block-size, 100% write, 100% randon.
This is a continuous test, and then I start drive-mirror to copy data
to other image file. I find this job can't finish.
I analysis the problem and find the dirty bitmap is always set, the job
can't converge.
Any ideas to solve this problem?
Thanks