On Thu, Apr 14, 2022 at 8:07 PM Ryan Taylor <rptaylor@xxxxxxx> wrote: > > Hello, > > > I am using cephfs via Openstack Manila (Ussuri I think). > > The cephfs cluster is v14.2.22 and my client has kernel 4.18.0-348.20.1.el8_5.x86_64 > > > I have a Manila share > > /volumes/_nogroup/55e46a89-31ff-4878-9e2a-81b4226c3cb2 > > > that is 5000 GB in size. When I mount it the size is reported correctly: > > > # df -h /cephfs > Filesystem Size Used Avail Use% Mounted on > 10.30.201.3:6789,10.30.202.3:6789,10.30.203.3:6789:/volumes/_nogroup/55e46a89-31ff-4878-9e2a-81b4226c3cb2 4.9T 278G 4.7T 6% /cephfs > > > However when I mount a subpath /test1 of my share, then both the size and usage are showing the size of the whole cephfs filesystem rather than my private share. > > > # df -h /cephfs > Filesystem Size Used Avail Use% Mounted on > 10.30.201.3:6789,10.30.202.3:6789,10.30.203.3:6789:/volumes/_nogroup/55e46a89-31ff-4878-9e2a-81b4226c3cb2/test1 4.0P 277T 3.7P 7% /cephfs > What are the capabilities of the ceph client user ID that you used to mount "/volumes/_nogroup/55e46a89-31ff-4878-9e2a-81b4226c3cb2/test1" ? Maybe you're hitting this limitation in https://docs.ceph.com/en/latest/cephfs/quota/#limitations , "Quotas must be configured carefully when used with path-based mount restrictions. The client needs to have access to the directory inode on which quotas are configured in order to enforce them. If the client has restricted access to a specific path (e.g., /home/user) based on the MDS capability, and a quota is configured on an ancestor directory they do not have access to (e.g., /home), the client will not enforce it. When using path-based access restrictions be sure to configure the quota on the directory the client is restricted too (e.g., /home/user) or something nested beneath it. " > > I tried setting the ceph.quota.max_bytes xattr on a subdirectory but it did not help. > You can't set quota xattr if your ceph client user ID doesn't have 'p' flag in its MDS capabilities, https://docs.ceph.com/en/latest/cephfs/client-auth/#layout-and-quota-restriction-the-p-flag . -Ramana > I'm not sure if the issue is in cephfs or Manila, but what would be required to get the right size and usage stats to be reported by df when a subpath of a share is mounted? > > > Thanks! > > -rt > > > Ryan Taylor > Research Computing Specialist > Research Computing Services, University Systems > University of Victoria > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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