In our department we're getting starting with Ceph 'reef', using Ceph FUSE client for our Ubuntu workstations. So far so good, except I can't quite figure out one aspect of subvolumes. When I do the commands: [root@ceph1 ~]# ceph fs subvolumegroup create cephfs csvg [root@ceph1 ~]# ceph fs subvolume create cephfs staff csvg --size 2000000000000 I get these results: - A subvolume group csvg is created on volume cephfs - A subvolume called staff is created in csvg subvolume (like /volumes/csvg/staff ) however there is no size limit set at this folder in the Ceph dashboard view - A folder with an random UUID name is created inside the subvolume staff ( like /volumes/csvg/staff/6a1b3de5-f6ab-4878-aea3-3c3c6f96ffcf ); this folder does have a size set on it of 2TB My questions are: - what's the purpose of this UUID, and is it a requirement? - which directory should be mounted for my clients, staff/ or staff/{UUID}, for the size limit to take effect? - is there any way to hide or disable this UUID for client mounts? (eg in /etc/fstab) [root@ceph1 ~]# ceph fs subvolume getpath cephfs staff csvg /volumes/csvg/staff/6a1b3de5-f6ab-4878-aea3-3c3c6f96ffcf [root@ceph1 ~]# ceph fs subvolume ls cephfs csvg [ { "name": "staff" } ] -- Sincerely, Matthew Melendy IT Services Specialist CS System Services Group FEC 3550, University of New Mexico _______________________________________________ ceph-users mailing list -- ceph-users(a)ceph.io To unsubscribe send an email to ceph-users-leave(a)ceph.io

In our department we're getting starting with Ceph 'reef', using Ceph FUSE client for our Ubuntu workstations. So far so good, except I can't quite figure out one aspect of subvolumes.