Bug #56414: mounting subvolume shows size/used bytes for entire fs, not subvolume - CephFS - Ceph

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Bug #56414

closed

mounting subvolume shows size/used bytes for entire fs, not subvolume

Added by Xiubo Li almost 2 years ago. Updated over 1 year ago.

Status:

Resolved

Priority:

Normal

Assignee:

Xiubo Li

Category:

Target version:

% Done:

Source:

Tags:

Backport:

Regression:

Severity:

3 - minor

Reviewed:

Affected Versions:

ceph-qa-suite:

Component(FS):

libcephfs

Labels (FS):

quotas

Pull request ID:

46902

Crash signature (v1):

Crash signature (v2):

Description

When mounting a subvolume at the base dir of the subvolume, the kernel client correctly shows the size/usage of a subvol:

Filesystem                                                                                            Size  Used Avail Use% Mounted on
xxx:6789:/volumes/_nogroup/4db8f9a6-926b-4306-8a6d-0e1b897c1d2f/d2ef5fea-040c-4ec1-b1bb-66073f9fc8ac  8.8T     0  8.8T   0% /cephfs

However if the client mounts a subdir of the subvolume, they see the size/usage of the entire cephfs:

Filesystem                                                                                                      Size  Used Avail Use% Mounted on
xxx:6789:/volumes/_nogroup/4db8f9a6-926b-4306-8a6d-0e1b897c1d2f/d2ef5fea-040c-4ec1-b1bb-66073f9fc8ac/my/subdir  1.3P  430T  860T  34% /var/lib/service

`ceph-fuse` does not have this behaviour -- mounting at a subdir below the subvolume shows the "correct" subvolume size and usage.

Related issues 1 (1 open — 0 closed)