1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/ceph/ceph_debug.h>
4 #include <linux/device.h>
5 #include <linux/slab.h>
6 #include <linux/module.h>
7 #include <linux/ctype.h>
8 #include <linux/debugfs.h>
9 #include <linux/seq_file.h>
11 #include <linux/ceph/libceph.h>
12 #include <linux/ceph/mon_client.h>
13 #include <linux/ceph/auth.h>
14 #include <linux/ceph/debugfs.h>
18 #ifdef CONFIG_DEBUG_FS
20 #include "mds_client.h"
22 static int mdsmap_show(struct seq_file *s, void *p)
25 struct ceph_fs_client *fsc = s->private;
26 struct ceph_mdsmap *mdsmap;
28 if (!fsc->mdsc || !fsc->mdsc->mdsmap)
30 mdsmap = fsc->mdsc->mdsmap;
31 seq_printf(s, "epoch %d\n", mdsmap->m_epoch);
32 seq_printf(s, "root %d\n", mdsmap->m_root);
33 seq_printf(s, "max_mds %d\n", mdsmap->m_max_mds);
34 seq_printf(s, "session_timeout %d\n", mdsmap->m_session_timeout);
35 seq_printf(s, "session_autoclose %d\n", mdsmap->m_session_autoclose);
36 for (i = 0; i < mdsmap->m_num_mds; i++) {
37 struct ceph_entity_addr *addr = &mdsmap->m_info[i].addr;
38 int state = mdsmap->m_info[i].state;
39 seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
40 ceph_pr_addr(&addr->in_addr),
41 ceph_mds_state_name(state));
49 static int mdsc_show(struct seq_file *s, void *p)
51 struct ceph_fs_client *fsc = s->private;
52 struct ceph_mds_client *mdsc = fsc->mdsc;
53 struct ceph_mds_request *req;
59 mutex_lock(&mdsc->mutex);
60 for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) {
61 req = rb_entry(rp, struct ceph_mds_request, r_node);
63 if (req->r_request && req->r_session)
64 seq_printf(s, "%lld\tmds%d\t", req->r_tid,
65 req->r_session->s_mds);
66 else if (!req->r_request)
67 seq_printf(s, "%lld\t(no request)\t", req->r_tid);
69 seq_printf(s, "%lld\t(no session)\t", req->r_tid);
71 seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
73 if (test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags))
74 seq_puts(s, "\t(unsafe)");
79 seq_printf(s, " #%llx", ceph_ino(req->r_inode));
80 } else if (req->r_dentry) {
81 path = ceph_mdsc_build_path(req->r_dentry, &pathlen,
85 spin_lock(&req->r_dentry->d_lock);
86 seq_printf(s, " #%llx/%pd (%s)",
87 ceph_ino(d_inode(req->r_dentry->d_parent)),
90 spin_unlock(&req->r_dentry->d_lock);
92 } else if (req->r_path1) {
93 seq_printf(s, " #%llx/%s", req->r_ino1.ino,
96 seq_printf(s, " #%llx", req->r_ino1.ino);
99 if (req->r_old_dentry) {
100 path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
104 spin_lock(&req->r_old_dentry->d_lock);
105 seq_printf(s, " #%llx/%pd (%s)",
106 req->r_old_dentry_dir ?
107 ceph_ino(req->r_old_dentry_dir) : 0,
110 spin_unlock(&req->r_old_dentry->d_lock);
112 } else if (req->r_path2 && req->r_op != CEPH_MDS_OP_SYMLINK) {
114 seq_printf(s, " #%llx/%s", req->r_ino2.ino,
117 seq_printf(s, " %s", req->r_path2);
122 mutex_unlock(&mdsc->mutex);
127 static int caps_show(struct seq_file *s, void *p)
129 struct ceph_fs_client *fsc = s->private;
130 int total, avail, used, reserved, min;
132 ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
133 seq_printf(s, "total\t\t%d\n"
138 total, avail, used, reserved, min);
142 static int mds_sessions_show(struct seq_file *s, void *ptr)
144 struct ceph_fs_client *fsc = s->private;
145 struct ceph_mds_client *mdsc = fsc->mdsc;
146 struct ceph_auth_client *ac = fsc->client->monc.auth;
147 struct ceph_options *opt = fsc->client->options;
150 mutex_lock(&mdsc->mutex);
152 /* The 'num' portion of an 'entity name' */
153 seq_printf(s, "global_id %llu\n", ac->global_id);
155 /* The -o name mount argument */
156 seq_printf(s, "name \"%s\"\n", opt->name ? opt->name : "");
158 /* The list of MDS session rank+state */
159 for (mds = 0; mds < mdsc->max_sessions; mds++) {
160 struct ceph_mds_session *session =
161 __ceph_lookup_mds_session(mdsc, mds);
165 mutex_unlock(&mdsc->mutex);
166 seq_printf(s, "mds.%d %s\n",
168 ceph_session_state_name(session->s_state));
170 ceph_put_mds_session(session);
171 mutex_lock(&mdsc->mutex);
173 mutex_unlock(&mdsc->mutex);
178 CEPH_DEFINE_SHOW_FUNC(mdsmap_show)
179 CEPH_DEFINE_SHOW_FUNC(mdsc_show)
180 CEPH_DEFINE_SHOW_FUNC(caps_show)
181 CEPH_DEFINE_SHOW_FUNC(mds_sessions_show)
187 static int congestion_kb_set(void *data, u64 val)
189 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
191 fsc->mount_options->congestion_kb = (int)val;
195 static int congestion_kb_get(void *data, u64 *val)
197 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
199 *val = (u64)fsc->mount_options->congestion_kb;
203 DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
204 congestion_kb_set, "%llu\n");
207 void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
209 dout("ceph_fs_debugfs_cleanup\n");
210 debugfs_remove(fsc->debugfs_bdi);
211 debugfs_remove(fsc->debugfs_congestion_kb);
212 debugfs_remove(fsc->debugfs_mdsmap);
213 debugfs_remove(fsc->debugfs_mds_sessions);
214 debugfs_remove(fsc->debugfs_caps);
215 debugfs_remove(fsc->debugfs_mdsc);
218 int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
223 dout("ceph_fs_debugfs_init\n");
224 BUG_ON(!fsc->client->debugfs_dir);
225 fsc->debugfs_congestion_kb =
226 debugfs_create_file("writeback_congestion_kb",
228 fsc->client->debugfs_dir,
230 &congestion_kb_fops);
231 if (!fsc->debugfs_congestion_kb)
234 snprintf(name, sizeof(name), "../../bdi/%s",
235 dev_name(fsc->sb->s_bdi->dev));
237 debugfs_create_symlink("bdi",
238 fsc->client->debugfs_dir,
240 if (!fsc->debugfs_bdi)
243 fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
245 fsc->client->debugfs_dir,
248 if (!fsc->debugfs_mdsmap)
251 fsc->debugfs_mds_sessions = debugfs_create_file("mds_sessions",
253 fsc->client->debugfs_dir,
255 &mds_sessions_show_fops);
256 if (!fsc->debugfs_mds_sessions)
259 fsc->debugfs_mdsc = debugfs_create_file("mdsc",
261 fsc->client->debugfs_dir,
264 if (!fsc->debugfs_mdsc)
267 fsc->debugfs_caps = debugfs_create_file("caps",
269 fsc->client->debugfs_dir,
272 if (!fsc->debugfs_caps)
278 ceph_fs_debugfs_cleanup(fsc);
283 #else /* CONFIG_DEBUG_FS */
285 int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
290 void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
294 #endif /* CONFIG_DEBUG_FS */