Re: RBD image name constraints

[Jason Dillaman <dillaman@redhat.com>]

> > Op 12 april 2016 om 14:32 schreef Bartłomiej Święcki
> > <bartlomiej.swiecki@corp.ovh.com>:
> > 
> > 
> > 
> > On 04/11/2016 05:08 PM, Ilya Dryomov wrote:
> > > On Mon, Apr 11, 2016 at 4:29 PM, Jason Dillaman <dillaman@redhat.com>
> > > wrote:
> > >
> > >> It would probably make sense to relax it for non-create operations and
> > >> use
> > >> a strict regex for create/clone/import/rename operations.
> > > I think it would also make sense to start enforcing a limit on the
> > > length of the image name on create/clone/etc.  I'm not pushing for it
> > > to be 96 chars (although I do believe it'd be sensible), just that we
> > > don't want it to be RADOS - strlen("rbd_id.").
> > >
> > > Thanks,
> > >
> > >                  Ilya
> > Sounds like a good plan to me, maybe we should also consider allowed
> > character set? Non-ascii or control characters make little sense here too.
> > 
> 
> Seems like a sane thing to me:
> 
> a-z, A-Z, 0-9, -, _ and . are the characters you want to allow in a image's
> name. I can't think of anything more.
> 
> Wido
> 
> > Regards,
> > Bartek
> > --
> > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> --
> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

All of this sounds good to me -- we should circulate a proposal in ceph-users before making any change.  Assuming we can reach a plan that doesn't break someone's Ceph deployment, this could be included as part of the Kraken-release.

Ilya -- just so that I am clear, is the current kernel limitation 96 characters minus the "rbd_id."-prefix (format 2) or ".rbd"-suffix (format 1)?

-- 

Jason Dillaman 

--
To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html