Adding dev list.
Jeff, is it okay to remove dir_chunk=0 for the cephfs case?
sage
On Tue, May 25, 2021 at 7:43 AM Daniel Gryniewicz <dang@xxxxxxxxxx> wrote:
>
> I think dir_chunk=0 should never be used, even for cephfs. It's not
> intended to be used in general, only for special circumstances (an
> out-of-tree FSAL asked for it, and we use it upstream for debugging
> readdir), and it may go away in a future version of Ganesha.
>
> The rest is probably okay for both of them. However, this raises some
> issues. Some settings, such as dir_chunk=0, Attr_Expiration_Time=0, and
> only_numeric_onwers=true are global to Ganesha. This means that, if
> CephFS and RGW need different global settings, they'd have to run in
> different instances of Ganesha. Is this something we're interested in?
>
> Daniel
>
> On 5/25/21 8:11 AM, Sebastian Wagner wrote:
> > Moving this to upstream, as this is an upstream issue.
> >
> > Hi Mike, hi Sage,
> >
> > Do we need to rethink how we deploy ganesha daemons? Looks like we need
> > different ganesha.conf templates for cephfs and rgw.
> >
> > - Sebastian
> >
> > Am 25.05.21 um 13:59 schrieb Matt Benjamin:
> >> Hi Sebastian,
> >>
> >> 1. yes, I think we should use different templates
> >> 2. MDCACHE { dir_chunk = 0; } is fatal for RGW NFS--it seems suited to
> >> avoid double caching of vnodes in the cephfs driver, but simply cannot
> >> be used with RGW
> >> 3. RGW has some other preferences--for example, some environments
> >> might prefer only_numeric_owners = true; Sage is already working on
> >> extending cephadm to generate exports differently, which should allow
> >> for multiple tenants
> >>
> >> Matt
> >>
> >> On Tue, May 25, 2021 at 7:39 AM Sebastian Wagner <sewagner@xxxxxxxxxx>
> >> wrote:
> >>> Hi Matt,
> >>>
> >>> This is the ganesha.conf template that we use for both cephfs and rgw:
> >>>
> >>> https://github.com/ceph/ceph/blob/master/src/pybind/mgr/cephadm/templates/services/nfs/ganesha.conf.j2
> >>>
> >>>
> >>> I have the slight impression that we might need to different templates
> >>> for rgw and cephfs?
> >>>
> >>> Best,
> >>> Sebastian
> >
> > ...snip...
> >
>
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