From: Xiubo Li <xiubli@xxxxxxxxxx>
For the old ceph version, if it received this one metric message
containing the dentry lease metric info, it will just ignore it.
URL: https://tracker.ceph.com/issues/43423
Signed-off-by: Xiubo Li <xiubli@xxxxxxxxxx>
---
fs/ceph/metric.c | 18 +++++++++++++++---
fs/ceph/metric.h | 14 ++++++++++++++
2 files changed, 29 insertions(+), 3 deletions(-)
diff --git a/fs/ceph/metric.c b/fs/ceph/metric.c
index fee4c4778313..5ec94bd4c1de 100644
--- a/fs/ceph/metric.c
+++ b/fs/ceph/metric.c
@@ -16,6 +16,7 @@ static bool ceph_mdsc_send_metrics(struct ceph_mds_client *mdsc,
struct ceph_metric_read_latency *read;
struct ceph_metric_write_latency *write;
struct ceph_metric_metadata_latency *meta;
+ struct ceph_metric_dlease *dlease;
struct ceph_client_metric *m = &mdsc->metric;
u64 nr_caps = atomic64_read(&m->total_caps);
struct ceph_msg *msg;
@@ -25,7 +26,7 @@ static bool ceph_mdsc_send_metrics(struct ceph_mds_client *mdsc,
s32 len;
len = sizeof(*head) + sizeof(*cap) + sizeof(*read) + sizeof(*write)
- + sizeof(*meta);
+ + sizeof(*meta) + sizeof(*dlease);
msg = ceph_msg_new(CEPH_MSG_CLIENT_METRICS, len, GFP_NOFS, true);
if (!msg) {
@@ -42,8 +43,8 @@ static bool ceph_mdsc_send_metrics(struct ceph_mds_client *mdsc,
cap->ver = 1;
cap->compat = 1;
cap->data_len = cpu_to_le32(sizeof(*cap) - 10);
- cap->hit = cpu_to_le64(percpu_counter_sum(&mdsc->metric.i_caps_hit));
- cap->mis = cpu_to_le64(percpu_counter_sum(&mdsc->metric.i_caps_mis));
+ cap->hit = cpu_to_le64(percpu_counter_sum(&m->i_caps_hit));
+ cap->mis = cpu_to_le64(percpu_counter_sum(&m->i_caps_mis));
cap->total = cpu_to_le64(nr_caps);
items++;
@@ -83,6 +84,17 @@ static bool ceph_mdsc_send_metrics(struct ceph_mds_client *mdsc,
meta->nsec = cpu_to_le32(ts.tv_nsec);
items++;
+ /* encode the dentry lease metric */
+ dlease = (struct ceph_metric_dlease *)(meta + 1);
+ dlease->type = cpu_to_le32(CLIENT_METRIC_TYPE_DENTRY_LEASE);
+ dlease->ver = 1;
+ dlease->compat = 1;
+ dlease->data_len = cpu_to_le32(sizeof(*dlease) - 10);
+ dlease->hit = cpu_to_le64(percpu_counter_sum(&m->d_lease_hit));
+ dlease->mis = cpu_to_le64(percpu_counter_sum(&m->d_lease_mis));
+ dlease->total = cpu_to_le64(atomic64_read(&m->total_dentries));
+ items++;
+
put_unaligned_le32(items, &head->num);
msg->front.iov_len = len;
msg->hdr.version = cpu_to_le16(1);
diff --git a/fs/ceph/metric.h b/fs/ceph/metric.h
index 710f3f1dceab..af6038ff39d4 100644
--- a/fs/ceph/metric.h
+++ b/fs/ceph/metric.h
@@ -27,6 +27,7 @@ enum ceph_metric_type {
CLIENT_METRIC_TYPE_READ_LATENCY, \
CLIENT_METRIC_TYPE_WRITE_LATENCY, \
CLIENT_METRIC_TYPE_METADATA_LATENCY, \
+ CLIENT_METRIC_TYPE_DENTRY_LEASE, \
\
CLIENT_METRIC_TYPE_MAX, \
}
@@ -80,6 +81,19 @@ struct ceph_metric_metadata_latency {
__le32 nsec;
} __packed;
+/* metric dentry lease header */
+struct ceph_metric_dlease {
+ __le32 type; /* ceph metric type */
+
+ __u8 ver;
+ __u8 compat;
+
+ __le32 data_len; /* length of sizeof(hit + mis + total) */
+ __le64 hit;
+ __le64 mis;
+ __le64 total;
+} __packed;
+
struct ceph_metric_head {
__le32 num; /* the number of metrics that will be sent */
} __packed;
