On Tue, Nov 7, 2017 at 3:28 PM, Dan van der Ster <dan@xxxxxxxxxxxxxx> wrote: > On Tue, Nov 7, 2017 at 4:15 PM, John Spray <jspray@xxxxxxxxxx> wrote: >> On Tue, Nov 7, 2017 at 3:01 PM, Dan van der Ster <dan@xxxxxxxxxxxxxx> wrote: >>> On Tue, Nov 7, 2017 at 12:57 PM, John Spray <jspray@xxxxxxxxxx> wrote: >>>> On Sun, Nov 5, 2017 at 4:19 PM, Brady Deetz <bdeetz@xxxxxxxxx> wrote: >>>>> My organization has a production cluster primarily used for cephfs upgraded >>>>> from jewel to luminous. We would very much like to have snapshots on that >>>>> filesystem, but understand that there are risks. >>>>> >>>>> What kind of work could cephfs admins do to help the devs stabilize this >>>>> feature? >>>> >>>> If you have a disposable test system, then you could install the >>>> latest master branch of Ceph (which has a stream of snapshot fixes in >>>> it) and run a replica of your intended workload. If you can find >>>> snapshot bugs (especially crashes) on master then they will certainly >>>> attract interest. >>> >>> Hi John. Are those fixes in master expected to make snapshots stable >>> with rados namespaces (a la Manila) ? >> >> Was there a specific bug with snapshots+namespaces? I may be having a >> failure of memory or have not been paying enough attention :-) >> > > I might be misremembering, but I recall a mail from Greg? a few months > ago saying that snapshots would surely not work with multiple > namespaces. > Can't find the mail, though.... I think that was about not being able to safely use snapshots when multiple filesystems share the same data pool (and are separated by only namespaces). If you have a single filesystem using multiple namespaces within the same data pool then I don't think there's an issue. John _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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