On Wed, 2020-10-21 at 00:50 -0400, xiubli@xxxxxxxxxx wrote: > 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(-) > Sorry for the long delay -- this one fell through the cracks somehow... > diff --git a/fs/ceph/metric.c b/fs/ceph/metric.c > index fee4c4778313..06729cbfabee 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 = atomic64_read(&m->total_dentries), dlease->total needs to be wrapped in cpu_to_le64(). > + 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; -- Jeff Layton <jlayton@xxxxxxxxxx>
