On Tue, Oct 25, 2022 at 11:10 AM Xiubo Li <xiubli@xxxxxxxxxx> wrote: > $ sudo ./bin/mount.ceph privileged@.a=/ /mnt/privileged/mountpoint > > $ sudo ./bin/mount.ceph global@.a=/ /mnt/global/mountpoint So you have two different mount points where different client permissions are used. There are various problems with that architecture: - it complicates administration, because now every mount has to be done twice - it complicates applications accessing ceph (and their configuration), because there are now 2 mount points - it increases resource usage for having twice as many ceph connections - it interferes with fscache, doubling fscache's local disk usage, reducing fscache's efficiency - ownership of the snapdir is still the same as the parent directory, and I can't have non-superuser processes to manage snapshots; all processes mananging snapshots need to have write permission on the parent directory - this is still all-or-nothing; I can't forbid users to list (+r) or access (+x) snapshots All those problems don't exist with my patch.
