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-rw-r--r--fs/ceph/debugfs.c485
1 files changed, 485 insertions, 0 deletions
diff --git a/fs/ceph/debugfs.c b/fs/ceph/debugfs.c
new file mode 100644
index 000000000..3904333fa
--- /dev/null
+++ b/fs/ceph/debugfs.c
@@ -0,0 +1,485 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/ceph/ceph_debug.h>
+
+#include <linux/device.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/ctype.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include <linux/math64.h>
+#include <linux/ktime.h>
+
+#include <linux/ceph/libceph.h>
+#include <linux/ceph/mon_client.h>
+#include <linux/ceph/auth.h>
+#include <linux/ceph/debugfs.h>
+
+#include "super.h"
+
+#ifdef CONFIG_DEBUG_FS
+
+#include "mds_client.h"
+#include "metric.h"
+
+static int mdsmap_show(struct seq_file *s, void *p)
+{
+ int i;
+ struct ceph_fs_client *fsc = s->private;
+ struct ceph_mdsmap *mdsmap;
+
+ if (!fsc->mdsc || !fsc->mdsc->mdsmap)
+ return 0;
+ mdsmap = fsc->mdsc->mdsmap;
+ seq_printf(s, "epoch %d\n", mdsmap->m_epoch);
+ seq_printf(s, "root %d\n", mdsmap->m_root);
+ seq_printf(s, "max_mds %d\n", mdsmap->m_max_mds);
+ seq_printf(s, "session_timeout %d\n", mdsmap->m_session_timeout);
+ seq_printf(s, "session_autoclose %d\n", mdsmap->m_session_autoclose);
+ for (i = 0; i < mdsmap->possible_max_rank; i++) {
+ struct ceph_entity_addr *addr = &mdsmap->m_info[i].addr;
+ int state = mdsmap->m_info[i].state;
+ seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
+ ceph_pr_addr(addr),
+ ceph_mds_state_name(state));
+ }
+ return 0;
+}
+
+/*
+ * mdsc debugfs
+ */
+static int mdsc_show(struct seq_file *s, void *p)
+{
+ struct ceph_fs_client *fsc = s->private;
+ struct ceph_mds_client *mdsc = fsc->mdsc;
+ struct ceph_mds_request *req;
+ struct rb_node *rp;
+ int pathlen = 0;
+ u64 pathbase;
+ char *path;
+
+ mutex_lock(&mdsc->mutex);
+ for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) {
+ req = rb_entry(rp, struct ceph_mds_request, r_node);
+
+ if (req->r_request && req->r_session)
+ seq_printf(s, "%lld\tmds%d\t", req->r_tid,
+ req->r_session->s_mds);
+ else if (!req->r_request)
+ seq_printf(s, "%lld\t(no request)\t", req->r_tid);
+ else
+ seq_printf(s, "%lld\t(no session)\t", req->r_tid);
+
+ seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
+
+ if (test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags))
+ seq_puts(s, "\t(unsafe)");
+ else
+ seq_puts(s, "\t");
+
+ if (req->r_inode) {
+ seq_printf(s, " #%llx", ceph_ino(req->r_inode));
+ } else if (req->r_dentry) {
+ path = ceph_mdsc_build_path(req->r_dentry, &pathlen,
+ &pathbase, 0);
+ if (IS_ERR(path))
+ path = NULL;
+ spin_lock(&req->r_dentry->d_lock);
+ seq_printf(s, " #%llx/%pd (%s)",
+ ceph_ino(d_inode(req->r_dentry->d_parent)),
+ req->r_dentry,
+ path ? path : "");
+ spin_unlock(&req->r_dentry->d_lock);
+ ceph_mdsc_free_path(path, pathlen);
+ } else if (req->r_path1) {
+ seq_printf(s, " #%llx/%s", req->r_ino1.ino,
+ req->r_path1);
+ } else {
+ seq_printf(s, " #%llx", req->r_ino1.ino);
+ }
+
+ if (req->r_old_dentry) {
+ path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
+ &pathbase, 0);
+ if (IS_ERR(path))
+ path = NULL;
+ spin_lock(&req->r_old_dentry->d_lock);
+ seq_printf(s, " #%llx/%pd (%s)",
+ req->r_old_dentry_dir ?
+ ceph_ino(req->r_old_dentry_dir) : 0,
+ req->r_old_dentry,
+ path ? path : "");
+ spin_unlock(&req->r_old_dentry->d_lock);
+ ceph_mdsc_free_path(path, pathlen);
+ } else if (req->r_path2 && req->r_op != CEPH_MDS_OP_SYMLINK) {
+ if (req->r_ino2.ino)
+ seq_printf(s, " #%llx/%s", req->r_ino2.ino,
+ req->r_path2);
+ else
+ seq_printf(s, " %s", req->r_path2);
+ }
+
+ seq_puts(s, "\n");
+ }
+ mutex_unlock(&mdsc->mutex);
+
+ return 0;
+}
+
+#define CEPH_LAT_METRIC_SHOW(name, total, avg, min, max, sq) { \
+ s64 _total, _avg, _min, _max, _sq, _st; \
+ _avg = ktime_to_us(avg); \
+ _min = ktime_to_us(min == KTIME_MAX ? 0 : min); \
+ _max = ktime_to_us(max); \
+ _total = total - 1; \
+ _sq = _total > 0 ? DIV64_U64_ROUND_CLOSEST(sq, _total) : 0; \
+ _st = int_sqrt64(_sq); \
+ _st = ktime_to_us(_st); \
+ seq_printf(s, "%-14s%-12lld%-16lld%-16lld%-16lld%lld\n", \
+ name, total, _avg, _min, _max, _st); \
+}
+
+#define CEPH_SZ_METRIC_SHOW(name, total, avg, min, max, sum) { \
+ u64 _min = min == U64_MAX ? 0 : min; \
+ seq_printf(s, "%-14s%-12lld%-16llu%-16llu%-16llu%llu\n", \
+ name, total, avg, _min, max, sum); \
+}
+
+static int metrics_file_show(struct seq_file *s, void *p)
+{
+ struct ceph_fs_client *fsc = s->private;
+ struct ceph_client_metric *m = &fsc->mdsc->metric;
+
+ seq_printf(s, "item total\n");
+ seq_printf(s, "------------------------------------------\n");
+ seq_printf(s, "%-35s%lld\n", "total inodes",
+ percpu_counter_sum(&m->total_inodes));
+ seq_printf(s, "%-35s%lld\n", "opened files",
+ atomic64_read(&m->opened_files));
+ seq_printf(s, "%-35s%lld\n", "pinned i_caps",
+ atomic64_read(&m->total_caps));
+ seq_printf(s, "%-35s%lld\n", "opened inodes",
+ percpu_counter_sum(&m->opened_inodes));
+ return 0;
+}
+
+static const char * const metric_str[] = {
+ "read",
+ "write",
+ "metadata",
+ "copyfrom"
+};
+static int metrics_latency_show(struct seq_file *s, void *p)
+{
+ struct ceph_fs_client *fsc = s->private;
+ struct ceph_client_metric *cm = &fsc->mdsc->metric;
+ struct ceph_metric *m;
+ s64 total, avg, min, max, sq;
+ int i;
+
+ seq_printf(s, "item total avg_lat(us) min_lat(us) max_lat(us) stdev(us)\n");
+ seq_printf(s, "-----------------------------------------------------------------------------------\n");
+
+ for (i = 0; i < METRIC_MAX; i++) {
+ m = &cm->metric[i];
+ spin_lock(&m->lock);
+ total = m->total;
+ avg = m->latency_avg;
+ min = m->latency_min;
+ max = m->latency_max;
+ sq = m->latency_sq_sum;
+ spin_unlock(&m->lock);
+ CEPH_LAT_METRIC_SHOW(metric_str[i], total, avg, min, max, sq);
+ }
+
+ return 0;
+}
+
+static int metrics_size_show(struct seq_file *s, void *p)
+{
+ struct ceph_fs_client *fsc = s->private;
+ struct ceph_client_metric *cm = &fsc->mdsc->metric;
+ struct ceph_metric *m;
+ s64 total;
+ u64 sum, avg, min, max;
+ int i;
+
+ seq_printf(s, "item total avg_sz(bytes) min_sz(bytes) max_sz(bytes) total_sz(bytes)\n");
+ seq_printf(s, "----------------------------------------------------------------------------------------\n");
+
+ for (i = 0; i < METRIC_MAX; i++) {
+ /* skip 'metadata' as it doesn't use the size metric */
+ if (i == METRIC_METADATA)
+ continue;
+ m = &cm->metric[i];
+ spin_lock(&m->lock);
+ total = m->total;
+ sum = m->size_sum;
+ avg = total > 0 ? DIV64_U64_ROUND_CLOSEST(sum, total) : 0;
+ min = m->size_min;
+ max = m->size_max;
+ spin_unlock(&m->lock);
+ CEPH_SZ_METRIC_SHOW(metric_str[i], total, avg, min, max, sum);
+ }
+
+ return 0;
+}
+
+static int metrics_caps_show(struct seq_file *s, void *p)
+{
+ struct ceph_fs_client *fsc = s->private;
+ struct ceph_client_metric *m = &fsc->mdsc->metric;
+ int nr_caps = 0;
+
+ seq_printf(s, "item total miss hit\n");
+ seq_printf(s, "-------------------------------------------------\n");
+
+ seq_printf(s, "%-14s%-16lld%-16lld%lld\n", "d_lease",
+ atomic64_read(&m->total_dentries),
+ percpu_counter_sum(&m->d_lease_mis),
+ percpu_counter_sum(&m->d_lease_hit));
+
+ nr_caps = atomic64_read(&m->total_caps);
+ seq_printf(s, "%-14s%-16d%-16lld%lld\n", "caps", nr_caps,
+ percpu_counter_sum(&m->i_caps_mis),
+ percpu_counter_sum(&m->i_caps_hit));
+
+ return 0;
+}
+
+static int caps_show_cb(struct inode *inode, int mds, void *p)
+{
+ struct ceph_inode_info *ci = ceph_inode(inode);
+ struct seq_file *s = p;
+ struct ceph_cap *cap;
+
+ spin_lock(&ci->i_ceph_lock);
+ cap = __get_cap_for_mds(ci, mds);
+ if (cap)
+ seq_printf(s, "0x%-17llx%-3d%-17s%-17s\n", ceph_ino(inode),
+ cap->session->s_mds,
+ ceph_cap_string(cap->issued),
+ ceph_cap_string(cap->implemented));
+ spin_unlock(&ci->i_ceph_lock);
+ return 0;
+}
+
+static int caps_show(struct seq_file *s, void *p)
+{
+ struct ceph_fs_client *fsc = s->private;
+ struct ceph_mds_client *mdsc = fsc->mdsc;
+ int total, avail, used, reserved, min, i;
+ struct cap_wait *cw;
+
+ ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
+ seq_printf(s, "total\t\t%d\n"
+ "avail\t\t%d\n"
+ "used\t\t%d\n"
+ "reserved\t%d\n"
+ "min\t\t%d\n\n",
+ total, avail, used, reserved, min);
+ seq_printf(s, "ino mds issued implemented\n");
+ seq_printf(s, "--------------------------------------------------\n");
+
+ mutex_lock(&mdsc->mutex);
+ for (i = 0; i < mdsc->max_sessions; i++) {
+ struct ceph_mds_session *session;
+
+ session = __ceph_lookup_mds_session(mdsc, i);
+ if (!session)
+ continue;
+ mutex_unlock(&mdsc->mutex);
+ mutex_lock(&session->s_mutex);
+ ceph_iterate_session_caps(session, caps_show_cb, s);
+ mutex_unlock(&session->s_mutex);
+ ceph_put_mds_session(session);
+ mutex_lock(&mdsc->mutex);
+ }
+ mutex_unlock(&mdsc->mutex);
+
+ seq_printf(s, "\n\nWaiters:\n--------\n");
+ seq_printf(s, "tgid ino need want\n");
+ seq_printf(s, "-----------------------------------------------------\n");
+
+ spin_lock(&mdsc->caps_list_lock);
+ list_for_each_entry(cw, &mdsc->cap_wait_list, list) {
+ seq_printf(s, "%-13d0x%-17llx%-17s%-17s\n", cw->tgid, cw->ino,
+ ceph_cap_string(cw->need),
+ ceph_cap_string(cw->want));
+ }
+ spin_unlock(&mdsc->caps_list_lock);
+
+ return 0;
+}
+
+static int mds_sessions_show(struct seq_file *s, void *ptr)
+{
+ struct ceph_fs_client *fsc = s->private;
+ struct ceph_mds_client *mdsc = fsc->mdsc;
+ struct ceph_auth_client *ac = fsc->client->monc.auth;
+ struct ceph_options *opt = fsc->client->options;
+ int mds;
+
+ mutex_lock(&mdsc->mutex);
+
+ /* The 'num' portion of an 'entity name' */
+ seq_printf(s, "global_id %llu\n", ac->global_id);
+
+ /* The -o name mount argument */
+ seq_printf(s, "name \"%s\"\n", opt->name ? opt->name : "");
+
+ /* The list of MDS session rank+state */
+ for (mds = 0; mds < mdsc->max_sessions; mds++) {
+ struct ceph_mds_session *session =
+ __ceph_lookup_mds_session(mdsc, mds);
+ if (!session) {
+ continue;
+ }
+ mutex_unlock(&mdsc->mutex);
+ seq_printf(s, "mds.%d %s\n",
+ session->s_mds,
+ ceph_session_state_name(session->s_state));
+
+ ceph_put_mds_session(session);
+ mutex_lock(&mdsc->mutex);
+ }
+ mutex_unlock(&mdsc->mutex);
+
+ return 0;
+}
+
+static int status_show(struct seq_file *s, void *p)
+{
+ struct ceph_fs_client *fsc = s->private;
+ struct ceph_entity_inst *inst = &fsc->client->msgr.inst;
+ struct ceph_entity_addr *client_addr = ceph_client_addr(fsc->client);
+
+ seq_printf(s, "instance: %s.%lld %s/%u\n", ENTITY_NAME(inst->name),
+ ceph_pr_addr(client_addr), le32_to_cpu(client_addr->nonce));
+ seq_printf(s, "blocklisted: %s\n", fsc->blocklisted ? "true" : "false");
+
+ return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(mdsmap);
+DEFINE_SHOW_ATTRIBUTE(mdsc);
+DEFINE_SHOW_ATTRIBUTE(caps);
+DEFINE_SHOW_ATTRIBUTE(mds_sessions);
+DEFINE_SHOW_ATTRIBUTE(status);
+DEFINE_SHOW_ATTRIBUTE(metrics_file);
+DEFINE_SHOW_ATTRIBUTE(metrics_latency);
+DEFINE_SHOW_ATTRIBUTE(metrics_size);
+DEFINE_SHOW_ATTRIBUTE(metrics_caps);
+
+
+/*
+ * debugfs
+ */
+static int congestion_kb_set(void *data, u64 val)
+{
+ struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
+
+ fsc->mount_options->congestion_kb = (int)val;
+ return 0;
+}
+
+static int congestion_kb_get(void *data, u64 *val)
+{
+ struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
+
+ *val = (u64)fsc->mount_options->congestion_kb;
+ return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
+ congestion_kb_set, "%llu\n");
+
+
+void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
+{
+ dout("ceph_fs_debugfs_cleanup\n");
+ debugfs_remove(fsc->debugfs_bdi);
+ debugfs_remove(fsc->debugfs_congestion_kb);
+ debugfs_remove(fsc->debugfs_mdsmap);
+ debugfs_remove(fsc->debugfs_mds_sessions);
+ debugfs_remove(fsc->debugfs_caps);
+ debugfs_remove(fsc->debugfs_status);
+ debugfs_remove(fsc->debugfs_mdsc);
+ debugfs_remove_recursive(fsc->debugfs_metrics_dir);
+}
+
+void ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
+{
+ char name[100];
+
+ dout("ceph_fs_debugfs_init\n");
+ fsc->debugfs_congestion_kb =
+ debugfs_create_file("writeback_congestion_kb",
+ 0600,
+ fsc->client->debugfs_dir,
+ fsc,
+ &congestion_kb_fops);
+
+ snprintf(name, sizeof(name), "../../bdi/%s",
+ bdi_dev_name(fsc->sb->s_bdi));
+ fsc->debugfs_bdi =
+ debugfs_create_symlink("bdi",
+ fsc->client->debugfs_dir,
+ name);
+
+ fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
+ 0400,
+ fsc->client->debugfs_dir,
+ fsc,
+ &mdsmap_fops);
+
+ fsc->debugfs_mds_sessions = debugfs_create_file("mds_sessions",
+ 0400,
+ fsc->client->debugfs_dir,
+ fsc,
+ &mds_sessions_fops);
+
+ fsc->debugfs_mdsc = debugfs_create_file("mdsc",
+ 0400,
+ fsc->client->debugfs_dir,
+ fsc,
+ &mdsc_fops);
+
+ fsc->debugfs_caps = debugfs_create_file("caps",
+ 0400,
+ fsc->client->debugfs_dir,
+ fsc,
+ &caps_fops);
+
+ fsc->debugfs_status = debugfs_create_file("status",
+ 0400,
+ fsc->client->debugfs_dir,
+ fsc,
+ &status_fops);
+
+ fsc->debugfs_metrics_dir = debugfs_create_dir("metrics",
+ fsc->client->debugfs_dir);
+
+ debugfs_create_file("file", 0400, fsc->debugfs_metrics_dir, fsc,
+ &metrics_file_fops);
+ debugfs_create_file("latency", 0400, fsc->debugfs_metrics_dir, fsc,
+ &metrics_latency_fops);
+ debugfs_create_file("size", 0400, fsc->debugfs_metrics_dir, fsc,
+ &metrics_size_fops);
+ debugfs_create_file("caps", 0400, fsc->debugfs_metrics_dir, fsc,
+ &metrics_caps_fops);
+}
+
+
+#else /* CONFIG_DEBUG_FS */
+
+void ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
+{
+}
+
+void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
+{
+}
+
+#endif /* CONFIG_DEBUG_FS */
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