On 2017/01/06 15:36, Franco Fichtner wrote:
> Hi Ted,
> Thanks, this is very helpful.  Don't mind exploring other
> routes as long as they are sustainable within OpenBSD, e.g.
> if kernel changes are needed that they are provided by the
> standard kernel eventually.
> > On 3 Jan 2017, at 9:44 PM, Ted Unangst <t...@tedunangst.com> wrote:
> > 
> > Timo Buhrmester wrote:
> >>> delete [vnd] entirely
> >> Out of curiosity (I'm mostly a NetBSD user), without vnd what would be
> >> the OpenBSD-way of providing a disk-ish interface to a file?
> > 
> > Well, the biggest use of vnd in base was just replaced with the makefs. 
> > (from
> > netbsd, actually.) vnd isn't going to be deleted, but it's pretty easy to
> > make a vscsi provider that talks to a file. If i had a pressing need to 
> > mount
> > compressed disk images, I'd start there. (I had some code for this, but it's
> > in another castle. It's pretty short, only like 20 lines anyway.)
> Can you give just a little more pointers or the code if it
> can be rescued?  Or specifically, is this something that needs
> to be added in the kernel or is it portable in userland?
> Cheers,
> Franco

Userland. vscsi is very roughly something like a scsi equivalent of tun.
For example OpenBSD's iSCSI implementation iscsid(8) is userland and
uses this to interface with the kernel (this has quite a lot more code
than Ted's suggestion though).

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