[Qemu-devel] drive-backup

[Stefan Priebe]

Hello,

is there any chance or hack to work with a bigger cluster size for the 
drive backup job?

See:
http://git.qemu.org/?p=qemu.git;a=blob;f=block/backup.c;h=16105d40b193be9bb40346027bdf58e62b956a96;hb=98d2c6f2cd80afaa2dc10091f5e35a97c181e4f5

This is very slow with ceph - may be due to the 64k block size. I would 
like to check whether this is faster with cephs native block size of 4mb.

Greets,
Stefan