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ceph: periodically send perf metrics to MDSes

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This will send the caps/read/write/metadata metrics to any available MDS
once per second, which will be the same as the userland client.  It will
skip the MDS sessions which don't support the metric collection, as the
MDSs will close socket connections when they get an unknown type
message.

We can disable the metric sending via the disable_send_metrics module
parameter.

[ jlayton: fix up endianness bug in ceph_mdsc_send_metrics() ]

URL: https://tracker.ceph.com/issues/43215
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Xiubo Li
2020-07-16 10:05:57 -04:00
committed by Ilya Dryomov
parent aaf5a47620
commit 18f473b384
7 changed files with 276 additions and 1 deletions
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include/linux/ceph/ceph_fs.h
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@@ -130,6 +130,7 @@ struct ceph_dir_layout {
#define CEPH_MSG_CLIENT_REQUEST 24
#define CEPH_MSG_CLIENT_REQUEST_FORWARD 25
#define CEPH_MSG_CLIENT_REPLY 26
#define CEPH_MSG_CLIENT_METRICS 29
#define CEPH_MSG_CLIENT_CAPS 0x310
#define CEPH_MSG_CLIENT_LEASE 0x311
#define CEPH_MSG_CLIENT_SNAP 0x312