[0/2] ceph: metrics for remote object copies

Message

Luis Henriques Nov. 3, 2021, 11:24 a.m. UTC

Following this email, I'm sending two patches that add support for a an
extra metric in the cephfs metrics infrastructure.

The 1st patch modifies libceph so that ceph_osdc_copy_from() returns an
OSD request and makes it responsibility of the caller to do the wait (and
release the request).  This is required so that the callers (currently
only the copy_file_range() syscall code) can access the request latency
timestamps.

The 2nd patch effectively adds support for the 'copyfrom' metrics.

Luís Henriques (2):
  libceph: have ceph_osdc_copy_from() return the osd request
  ceph: add a new metric to keep track of remote object copies

 fs/ceph/debugfs.c               |  3 ++-
 fs/ceph/file.c                  | 13 ++++++++++++-
 fs/ceph/metric.h                |  8 ++++++++
 include/linux/ceph/osd_client.h | 21 +++++++++++----------
 net/ceph/osd_client.c           | 27 ++++++++++++++-------------
 5 files changed, 47 insertions(+), 25 deletions(-)