On 12/21/2015 11:20 PM, Josh Durgin wrote: > On 12/21/2015 11:00 AM, Wido den Hollander wrote: >> My discard code now works, but I wanted to verify. If I understand Jason >> correctly it would be a matter of figuring out the 'order' of a image >> and call rbd_discard in a loop until you reach the end of the image. > > You'd need to get the order via rbd_stat(), convert it to object size > (i.e. (1 << order)), and fetch stripe_count with rbd_get_stripe_count(). > > Then do the discards in (object size * stripe_count) chunks. This > ensures you discard entire objects. This is the size you'd want to use > for import/export as well, ideally. > Thanks! I just implemented this, could you take a look? https://github.com/wido/libvirt/commit/b07925ad50fdb6683b5b21deefceb0829a7842dc >> I just want libvirt to be as feature complete as possible when it comes >> to RBD. > > I see, makes sense. > > Josh > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Wido den Hollander 42on B.V. Ceph trainer and consultant Phone: +31 (0)20 700 9902 Skype: contact42on -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
