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
I tried setting the ceph.quota.max_bytes xattr on a subdirectory but it did
not help.
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
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