On Mon, Apr 5, 2021 at 11:55 AM Sage Weil <sage@xxxxxxxxxxxx> wrote: > > On Mon, Apr 5, 2021 at 1:33 PM Jeff Layton <jlayton@xxxxxxxxxx> wrote: > > > > On Thu, 2021-04-01 at 11:04 +0200, Dan van der Ster wrote: > > > If one kernel mounts the > > > same cephfs several times (with different prefixes), we observed that > > > this is a unique client session. But does the ceph module globally > > > share a single copy of cluster metadata, e.g. osdmaps, or is that all > > > duplicated per session? > > > > > > > One copy per-cluster client, which should generally be shared between > > mounts to the same cluster, provided that you're using similar-enough > > mount options for the kernel to do that. > > I suspect the problem is that if these are coming from mgr/volumes, > then each mount has a unique cephx user (and a client cap that locks > them into the exported directory), which means that the client > instances can't be shared. This is how it works for Manila but not CSI. As I recall, a single cephx user credential is used for all mounts by CSI. +Travis Nielsen / +Humble Chirammal -- Patrick Donnelly, Ph.D. He / Him / His Principal Software Engineer Red Hat Sunnyvale, CA GPG: 19F28A586F808C2402351B93C3301A3E258DD79D _______________________________________________ Dev mailing list -- dev@xxxxxxx To unsubscribe send an email to dev-leave@xxxxxxx
