Re: [PATCH 0/2] New zoned loop block device driver

[Ming Lei <ming.lei@redhat.com>]

On Mon, Jan 06, 2025 at 04:21:18PM +0100, Christoph Hellwig wrote:
> On Mon, Jan 06, 2025 at 07:54:05AM -0700, Jens Axboe wrote:
> > On 1/6/25 7:24 AM, Damien Le Moal wrote:
> > > The first patch implements the new "zloop" zoned block device driver
> > > which allows creating zoned block devices using one regular file per
> > > zone as backing storage.
> > 
> > Couldn't we do this with ublk and keep most of this stuff in userspace
> > rather than need a whole new loop driver?
> 
> I'm pretty sure we could do that.  But dealing with ublk is complete
> pain especially when setting up and tearing it down all the time for
> test, and would require a lot more code, so why?  As-is I can directly

You can link with libublk or add it to rublk, which supports ramdisk zone
already, then install rublk from crates.io directly for setup the
test.

Forking one new loop could add much more pain since you may have to address
everything we have fixed for loop, please look at 'git log loop'


Thanks,
Ming