qcow2_bench

	A	B	D	H
1	dirves
2	SAMSUNG MZQLB1T9HAJR-00007
3	nic
4	21:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
5	29:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network Connection (rev 03)
6	fio-3.27
7
8	drbd device 100G		CPU: AMD Ryzen 5 3600 6-Core Processor
9			Memory: 66G
10
11
12	benchmark script
13	https://gist.github.com/kvaps/e36b82826fb8e36d0362c7f4033948d0		kvm -m 8192 -cpu host \	kvm -m 8192 -cpu host \
14			-smp cores=4,threads=1,sockets=1 \	-smp cores=4,threads=1,sockets=1 \
15			-net nic -net user,hostfwd=tcp::2222-:22 \	-net nic -net user,hostfwd=tcp::2222-:22 \
16			-drive file=vm1.qcow2,if=virtio \	-drive if=none,id=ad,file=vm1.qcow2 \
17			-drive file=seed.iso,if=virtio \	-drive if=none,id=cd,file=seed.iso \
18			-drive file=/mnt/test/test,format=raw,if=virtio \	-drive if=none,id=hd,file=/dev/test/test,format=qcow2,aio=io_uring \
19			-nographic	-device virtio-scsi-pci,id=scsi \
20				-device scsi-hd,drive=ad \
21	volume size 100G			-device scsi-hd,drive=cd \
22				-device scsi-hd,drive=hd \
23	fio commands			-nographic
24	fio -name=randwrite_fsync -ioengine=libaio -direct=1 -randrepeat=0 -rw=randwrite -runtime=60 -bs=4k -numjobs=1 -iodepth=1 -fsync=1
25	fio -name=randwrite_jobs4 -ioengine=libaio -direct=1 -randrepeat=0 -rw=randwrite -runtime=60 -bs=4k -numjobs=4 -iodepth=128 -group_reporting
26	fio -name=randwrite -ioengine=libaio -direct=1 -randrepeat=0 -rw=randwrite -runtime=60 -bs=4k -numjobs=1 -iodepth=128
27	fio -name=write -ioengine=libaio -direct=1 -randrepeat=0 -rw=write -runtime=60 -bs=4M -numjobs=1 -iodepth=16
28	fio -name=randread_fsync -ioengine=libaio -direct=1 -randrepeat=0 -rw=randread -runtime=60 -bs=4k -numjobs=1 -iodepth=1 -fsync=1
29	fio -name=randread_jobs4 -ioengine=libaio -direct=1 -randrepeat=0 -rw=randread -runtime=60 -bs=4k -numjobs=4 -iodepth=128 -group_reporting
30	fio -name=randread -ioengine=libaio -direct=1 -randrepeat=0 -rw=randread -runtime=60 -bs=4k -numjobs=1 -iodepth=128
31	fio -name=read -ioengine=libaio -direct=1 -randrepeat=0 -rw=read -runtime=60 -bs=4M -numjobs=1 -iodepth=16
32
33	OS
34	Ubuntu 22.04 LTS (Jammy Jellyfish)
35
36	Kernel
37	6.3.6-060306-generic
38
39	Versions
40	liburing	liburing-2.3-292-gfb50b59
41	ubdsrv	v1.1-rc1-96-ga7aa28b
42	qemu	6.2.0
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47
48	todo: vm qcow lv, vm raw lv with io_uring
49	todo: vm qcow lv, vm raw lv with virtio-scsi
50	todo: lvm snapshots vs qcow snapshots vs lvm-thin
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