Hi shadowlin, On Wed, 7 Mar 2018 23:24:42 +0800, shadow_lin wrote: > Is it safe to use active/active multipath If use suse kernel with target_core_rbd? > Thanks. A cross-gateway failover race-condition similar to what Mike described is currently possible with active/active target_core_rbd. It's a corner case that is dependent on a client assuming that unacknowledged I/O has been implicitly terminated and can be resumed via an alternate path, while the original gateway at the same time issues the original request such that it reaches the Ceph cluster after differing I/O to the same region via the alternate path. It's not something that we've observed in the wild, but is nevertheless a bug that is being worked on, with a resolution that should also be usable for active/active tcmu-runner. Cheers, David _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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