----- Original Message ----- > From: "Samuel Just" <sjust@xxxxxxxxxx> > To: "ceph-devel" <ceph-devel@xxxxxxxxxxxxxxx> > Sent: Friday, June 12, 2015 3:15:02 PM > Subject: Rados multi-object transaction use cases > > In the Infernalis CDS, we had a session on RADOS multi-object transactions. > I'd like to continue the discussion at the upcoming Jewel CDS. I thought > I'd prime the discussion by asking: if librados supported multi-object read > and write transactions, what would you use them for? Some idea of use cases > would be valuable when considering things like deadlock coping strategies. Here are a few for rgw: - update bucket index when creating / modifying / deleting an object - store multiple metadata objects atomically: e.g., user info + user access keys + user email (currently not atomic) - store bucket entry point + bucket instance info atomically - creating a bucket and adding it to the user's list of buckets Yehuda -- 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
