Am 21.11.24 um 10:56 schrieb Janne Johansson:
== snip The first category of these failures that we will discuss involves inconsistent networks -- if there is a netsplit (a disconnection between two servers that splits the network into two pieces), Ceph might be unable to mark OSDs down and remove them from the acting PG sets. == snip Why is Ceph not able to mark OSDs down, and why is it unclear whether or not it is able to do so ("might")?I think designs with 2 DCs usually have one or two mons per DC, and then a third/fifth mon in a (small) third site so it can arbitrate which side is up and which isn't. OSDs report to each other but also to mons about their existence.
Yes absolutely, you need another qdevice/witness/mon... in a third location for the quorum, and my setup will have that. But still I don't see why Ceph should not be able to mark an OSD down if one site went down.
-- Andre Tann _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
