I'm am running a Ceph Cluster on 5 Servers, all with a single osd and acting as a client (kernel) for nearly half a year now and didn't encounter a lockup yet. Total storage is 3.25TB with about 600GB raw storage used, if that matters.
Dan van der Ster <d...@vanderster.com> schrieb am Di., 23. Apr. 2019, 09:33: > On Mon, 22 Apr 2019, 22:20 Gregory Farnum, <gfar...@redhat.com> wrote: > >> On Sat, Apr 20, 2019 at 9:29 AM Igor Podlesny <ceph-u...@poige.ru> wrote: >> > >> > I remember seeing reports in regards but it's being a while now. >> > Can anyone tell? >> >> No, this hasn't changed. It's unlikely it ever will; I think NFS >> resolved the issue but it took a lot of ridiculous workarounds and >> imposes a permanent memory cost on the client. >> > > On the other hand, we've been running osds and local kernel mounts through > some ior stress testing and managed to lock up only one node, only once > (and that was with a 2TB shared output file). > > Maybe the necessary memory pressure conditions get less likely as the > number of clients and osds gets larger? (i.e. it's probably easy to trigger > with one single node/osd because all IO is local, but for large clusters > most IO is remote). > > .. Dan > > > -Greg >> _______________________________________________ >> ceph-users mailing list >> ceph-users@lists.ceph.com >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
_______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
