Re: [Qemu-block] null-co undefined read behavior

[Kevin Wolf]

Am 13.06.2017 um 10:43 hat Fam Zheng geschrieben:
> On Tue, 06/13 09:52, Kevin Wolf wrote:
> > (6) Make read-zeroes=on the default. Gives people worse performance if
> > they expect that null-co:// without any options is the fastest thing
> > possible, but it has defined behaviour by default which seems good.
> 
> Not that it really matters, but null-co:// is then a poor taste of name 
> because
> we actually gives a zero-co:// (the difference is similar to /dev/zero versus
> null_blk in Linux).

Well, /dev/null is character device rather than a block device and you
can't read from it at all, so the analogy doesn't quite work anyway.

Kevin