// 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/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" 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->m_num_mds; 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->in_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; 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); kfree(path); } 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); kfree(path); } 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; } static int caps_show(struct seq_file *s, void *p) { struct ceph_fs_client *fsc = s->private; int total, avail, used, reserved, min; 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%d\n", total, avail, used, reserved, min); return 0; } static int dentry_lru_show(struct seq_file *s, void *ptr) { struct ceph_fs_client *fsc = s->private; struct ceph_mds_client *mdsc = fsc->mdsc; struct ceph_dentry_info *di; spin_lock(&mdsc->dentry_lru_lock); list_for_each_entry(di, &mdsc->dentry_lru, lru) { struct dentry *dentry = di->dentry; seq_printf(s, "%p %p\t%pd\n", di, dentry, dentry); } spin_unlock(&mdsc->dentry_lru_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 = -1; 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; } CEPH_DEFINE_SHOW_FUNC(mdsmap_show) CEPH_DEFINE_SHOW_FUNC(mdsc_show) CEPH_DEFINE_SHOW_FUNC(caps_show) CEPH_DEFINE_SHOW_FUNC(dentry_lru_show) CEPH_DEFINE_SHOW_FUNC(mds_sessions_show) /* * 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_mdsc); debugfs_remove(fsc->debugfs_dentry_lru); } int ceph_fs_debugfs_init(struct ceph_fs_client *fsc) { char name[100]; int err = -ENOMEM; dout("ceph_fs_debugfs_init\n"); BUG_ON(!fsc->client->debugfs_dir); fsc->debugfs_congestion_kb = debugfs_create_file("writeback_congestion_kb", 0600, fsc->client->debugfs_dir, fsc, &congestion_kb_fops); if (!fsc->debugfs_congestion_kb) goto out; snprintf(name, sizeof(name), "../../bdi/%s", dev_name(fsc->sb->s_bdi->dev)); fsc->debugfs_bdi = debugfs_create_symlink("bdi", fsc->client->debugfs_dir, name); if (!fsc->debugfs_bdi) goto out; fsc->debugfs_mdsmap = debugfs_create_file("mdsmap", 0400, fsc->client->debugfs_dir, fsc, &mdsmap_show_fops); if (!fsc->debugfs_mdsmap) goto out; fsc->debugfs_mds_sessions = debugfs_create_file("mds_sessions", 0400, fsc->client->debugfs_dir, fsc, &mds_sessions_show_fops); if (!fsc->debugfs_mds_sessions) goto out; fsc->debugfs_mdsc = debugfs_create_file("mdsc", 0400, fsc->client->debugfs_dir, fsc, &mdsc_show_fops); if (!fsc->debugfs_mdsc) goto out; fsc->debugfs_caps = debugfs_create_file("caps", 0400, fsc->client->debugfs_dir, fsc, &caps_show_fops); if (!fsc->debugfs_caps) goto out; fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru", 0400, fsc->client->debugfs_dir, fsc, &dentry_lru_show_fops); if (!fsc->debugfs_dentry_lru) goto out; return 0; out: ceph_fs_debugfs_cleanup(fsc); return err; } #else /* CONFIG_DEBUG_FS */ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc) { return 0; } void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc) { } #endif /* CONFIG_DEBUG_FS */