> but what is the problem with only one active PG? > someone pointed out "split brain" but I am unsure about this.
I think Paxos will ensure that split-brain doesn’t happen by virtue of needing >50% of the mon quorum to be up. > i think what happens in the worst case is this: > only 1 PG is available, client writes changes to this PG, the disk of this 1 > PG dies as well That’s part of it. Overlapping failures *do* happen. > - so i guess we'd need to restore the data from the 2 offline PGs in the room > that is down and we would have lots of trouble with restoring and also with > data inconsistency, right? Yes. _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
