// 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> #ifdef CONFIG_DEBUG_FS /* * Implement /sys/kernel/debug/ceph fun * * /sys/kernel/debug/ceph/client* - an instance of the ceph client * .../osdmap - current osdmap * .../monmap - current monmap * .../osdc - active osd requests * .../monc - mon client state * .../client_options - libceph-only (i.e. not rbd or cephfs) options * .../dentry_lru - dump contents of dentry lru * .../caps - expose cap (reservation) stats * .../bdi - symlink to ../../bdi/something */ static struct dentry *ceph_debugfs_dir; static int monmap_show(struct seq_file *s, void *p) { int i; struct ceph_client *client = s->private; if (client->monc.monmap == NULL) return 0; seq_printf(s, "epoch %d\n", client->monc.monmap->epoch); for (i = 0; i < client->monc.monmap->num_mon; i++) { struct ceph_entity_inst *inst = &client->monc.monmap->mon_inst[i]; seq_printf(s, "\t%s%lld\t%s\n", ENTITY_NAME(inst->name), ceph_pr_addr(&inst->addr)); } return 0; } static int osdmap_show(struct seq_file *s, void *p) { int i; struct ceph_client *client = s->private; struct ceph_osd_client *osdc = &client->osdc; struct ceph_osdmap *map = osdc->osdmap; struct rb_node *n; if (map == NULL) return 0; down_read(&osdc->lock); seq_printf(s, "epoch %u barrier %u flags 0x%x\n", map->epoch, osdc->epoch_barrier, map->flags); for (n = rb_first(&map->pg_pools); n; n = rb_next(n)) { struct ceph_pg_pool_info *pi = rb_entry(n, struct ceph_pg_pool_info, node); seq_printf(s, "pool %lld '%s' type %d size %d min_size %d pg_num %u pg_num_mask %d flags 0x%llx lfor %u read_tier %lld write_tier %lld\n", pi->id, pi->name, pi->type, pi->size, pi->min_size, pi->pg_num, pi->pg_num_mask, pi->flags, pi->last_force_request_resend, pi->read_tier, pi->write_tier); } for (i = 0; i < map->max_osd; i++) { struct ceph_entity_addr *addr = &map->osd_addr[i]; u32 state = map->osd_state[i]; char sb[64]; seq_printf(s, "osd%d\t%s\t%3d%%\t(%s)\t%3d%%\t%2d\n", i, ceph_pr_addr(addr), ((map->osd_weight[i]*100) >> 16), ceph_osdmap_state_str(sb, sizeof(sb), state), ((ceph_get_primary_affinity(map, i)*100) >> 16), ceph_get_crush_locality(map, i, &client->options->crush_locs)); } for (n = rb_first(&map->pg_temp); n; n = rb_next(n)) { struct ceph_pg_mapping *pg = rb_entry(n, struct ceph_pg_mapping, node); seq_printf(s, "pg_temp %llu.%x [", pg->pgid.pool, pg->pgid.seed); for (i = 0; i < pg->pg_temp.len; i++) seq_printf(s, "%s%d", (i == 0 ? "" : ","), pg->pg_temp.osds[i]); seq_printf(s, "]\n"); } for (n = rb_first(&map->primary_temp); n; n = rb_next(n)) { struct ceph_pg_mapping *pg = rb_entry(n, struct ceph_pg_mapping, node); seq_printf(s, "primary_temp %llu.%x %d\n", pg->pgid.pool, pg->pgid.seed, pg->primary_temp.osd); } for (n = rb_first(&map->pg_upmap); n; n = rb_next(n)) { struct ceph_pg_mapping *pg = rb_entry(n, struct ceph_pg_mapping, node); seq_printf(s, "pg_upmap %llu.%x [", pg->pgid.pool, pg->pgid.seed); for (i = 0; i < pg->pg_upmap.len; i++) seq_printf(s, "%s%d", (i == 0 ? "" : ","), pg->pg_upmap.osds[i]); seq_printf(s, "]\n"); } for (n = rb_first(&map->pg_upmap_items); n; n = rb_next(n)) { struct ceph_pg_mapping *pg = rb_entry(n, struct ceph_pg_mapping, node); seq_printf(s, "pg_upmap_items %llu.%x [", pg->pgid.pool, pg->pgid.seed); for (i = 0; i < pg->pg_upmap_items.len; i++) seq_printf(s, "%s%d->%d", (i == 0 ? "" : ","), pg->pg_upmap_items.from_to[i][0], pg->pg_upmap_items.from_to[i][1]); seq_printf(s, "]\n"); } up_read(&osdc->lock); return 0; } static int monc_show(struct seq_file *s, void *p) { struct ceph_client *client = s->private; struct ceph_mon_generic_request *req; struct ceph_mon_client *monc = &client->monc; struct rb_node *rp; int i; mutex_lock(&monc->mutex); for (i = 0; i < ARRAY_SIZE(monc->subs); i++) { seq_printf(s, "have %s %u", ceph_sub_str[i], monc->subs[i].have); if (monc->subs[i].want) seq_printf(s, " want %llu%s", le64_to_cpu(monc->subs[i].item.start), (monc->subs[i].item.flags & CEPH_SUBSCRIBE_ONETIME ? "" : "+")); seq_putc(s, '\n'); } seq_printf(s, "fs_cluster_id %d\n", monc->fs_cluster_id); for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) { __u16 op; req = rb_entry(rp, struct ceph_mon_generic_request, node); op = le16_to_cpu(req->request->hdr.type); if (op == CEPH_MSG_STATFS) seq_printf(s, "%llu statfs\n", req->tid); else if (op == CEPH_MSG_MON_GET_VERSION) seq_printf(s, "%llu mon_get_version", req->tid); else seq_printf(s, "%llu unknown\n", req->tid); } mutex_unlock(&monc->mutex); return 0; } static void dump_spgid(struct seq_file *s, const struct ceph_spg *spgid) { seq_printf(s, "%llu.%x", spgid->pgid.pool, spgid->pgid.seed); if (spgid->shard != CEPH_SPG_NOSHARD) seq_printf(s, "s%d", spgid->shard); } static void dump_target(struct seq_file *s, struct ceph_osd_request_target *t) { int i; seq_printf(s, "osd%d\t%llu.%x\t", t->osd, t->pgid.pool, t->pgid.seed); dump_spgid(s, &t->spgid); seq_puts(s, "\t["); for (i = 0; i < t->up.size; i++) seq_printf(s, "%s%d", (!i ? "" : ","), t->up.osds[i]); seq_printf(s, "]/%d\t[", t->up.primary); for (i = 0; i < t->acting.size; i++) seq_printf(s, "%s%d", (!i ? "" : ","), t->acting.osds[i]); seq_printf(s, "]/%d\te%u\t", t->acting.primary, t->epoch); if (t->target_oloc.pool_ns) { seq_printf(s, "%*pE/%*pE\t0x%x", (int)t->target_oloc.pool_ns->len, t->target_oloc.pool_ns->str, t->target_oid.name_len, t->target_oid.name, t->flags); } else { seq_printf(s, "%*pE\t0x%x", t->target_oid.name_len, t->target_oid.name, t->flags); } if (t->paused) seq_puts(s, "\tP"); } static void dump_request(struct seq_file *s, struct ceph_osd_request *req) { int i; seq_printf(s, "%llu\t", req->r_tid); dump_target(s, &req->r_t); seq_printf(s, "\t%d", req->r_attempts); for (i = 0; i < req->r_num_ops; i++) { struct ceph_osd_req_op *op = &req->r_ops[i]; seq_printf(s, "%s%s", (i == 0 ? "\t" : ","), ceph_osd_op_name(op->op)); if (op->op == CEPH_OSD_OP_WATCH) seq_printf(s, "-%s", ceph_osd_watch_op_name(op->watch.op)); else if (op->op == CEPH_OSD_OP_CALL) seq_printf(s, "-%s/%s", op->cls.class_name, op->cls.method_name); } seq_putc(s, '\n'); } static void dump_requests(struct seq_file *s, struct ceph_osd *osd) { struct rb_node *n; mutex_lock(&osd->lock); for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { struct ceph_osd_request *req = rb_entry(n, struct ceph_osd_request, r_node); dump_request(s, req); } mutex_unlock(&osd->lock); } static void dump_linger_request(struct seq_file *s, struct ceph_osd_linger_request *lreq) { seq_printf(s, "%llu\t", lreq->linger_id); dump_target(s, &lreq->t); seq_printf(s, "\t%u\t%s%s/%d\n", lreq->register_gen, lreq->is_watch ? "W" : "N", lreq->committed ? "C" : "", lreq->last_error); } static void dump_linger_requests(struct seq_file *s, struct ceph_osd *osd) { struct rb_node *n; mutex_lock(&osd->lock); for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { struct ceph_osd_linger_request *lreq = rb_entry(n, struct ceph_osd_linger_request, node); dump_linger_request(s, lreq); } mutex_unlock(&osd->lock); } static void dump_snapid(struct seq_file *s, u64 snapid) { if (snapid == CEPH_NOSNAP) seq_puts(s, "head"); else if (snapid == CEPH_SNAPDIR) seq_puts(s, "snapdir"); else seq_printf(s, "%llx", snapid); } static void dump_name_escaped(struct seq_file *s, unsigned char *name, size_t len) { size_t i; for (i = 0; i < len; i++) { if (name[i] == '%' || name[i] == ':' || name[i] == '/' || name[i] < 32 || name[i] >= 127) { seq_printf(s, "%%%02x", name[i]); } else { seq_putc(s, name[i]); } } } static void dump_hoid(struct seq_file *s, const struct ceph_hobject_id *hoid) { if (hoid->snapid == 0 && hoid->hash == 0 && !hoid->is_max && hoid->pool == S64_MIN) { seq_puts(s, "MIN"); return; } if (hoid->is_max) { seq_puts(s, "MAX"); return; } seq_printf(s, "%lld:%08x:", hoid->pool, hoid->hash_reverse_bits); dump_name_escaped(s, hoid->nspace, hoid->nspace_len); seq_putc(s, ':'); dump_name_escaped(s, hoid->key, hoid->key_len); seq_putc(s, ':'); dump_name_escaped(s, hoid->oid, hoid->oid_len); seq_putc(s, ':'); dump_snapid(s, hoid->snapid); } static void dump_backoffs(struct seq_file *s, struct ceph_osd *osd) { struct rb_node *n; mutex_lock(&osd->lock); for (n = rb_first(&osd->o_backoffs_by_id); n; n = rb_next(n)) { struct ceph_osd_backoff *backoff = rb_entry(n, struct ceph_osd_backoff, id_node); seq_printf(s, "osd%d\t", osd->o_osd); dump_spgid(s, &backoff->spgid); seq_printf(s, "\t%llu\t", backoff->id); dump_hoid(s, backoff->begin); seq_putc(s, '\t'); dump_hoid(s, backoff->end); seq_putc(s, '\n'); } mutex_unlock(&osd->lock); } static int osdc_show(struct seq_file *s, void *pp) { struct ceph_client *client = s->private; struct ceph_osd_client *osdc = &client->osdc; struct rb_node *n; down_read(&osdc->lock); seq_printf(s, "REQUESTS %d homeless %d\n", atomic_read(&osdc->num_requests), atomic_read(&osdc->num_homeless)); for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); dump_requests(s, osd); } dump_requests(s, &osdc->homeless_osd); seq_puts(s, "LINGER REQUESTS\n"); for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); dump_linger_requests(s, osd); } dump_linger_requests(s, &osdc->homeless_osd); seq_puts(s, "BACKOFFS\n"); for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); dump_backoffs(s, osd); } up_read(&osdc->lock); return 0; } static int client_options_show(struct seq_file *s, void *p) { struct ceph_client *client = s->private; int ret; ret = ceph_print_client_options(s, client, true); if (ret) return ret; seq_putc(s, '\n'); return 0; } DEFINE_SHOW_ATTRIBUTE(monmap); DEFINE_SHOW_ATTRIBUTE(osdmap); DEFINE_SHOW_ATTRIBUTE(monc); DEFINE_SHOW_ATTRIBUTE(osdc); DEFINE_SHOW_ATTRIBUTE(client_options); void __init ceph_debugfs_init(void) { ceph_debugfs_dir = debugfs_create_dir("ceph", NULL); } void ceph_debugfs_cleanup(void) { debugfs_remove(ceph_debugfs_dir); } void ceph_debugfs_client_init(struct ceph_client *client) { char name[80]; snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid, client->monc.auth->global_id); dout("ceph_debugfs_client_init %p %s\n", client, name); client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir); client->monc.debugfs_file = debugfs_create_file("monc", 0400, client->debugfs_dir, client, &monc_fops); client->osdc.debugfs_file = debugfs_create_file("osdc", 0400, client->debugfs_dir, client, &osdc_fops); client->debugfs_monmap = debugfs_create_file("monmap", 0400, client->debugfs_dir, client, &monmap_fops); client->debugfs_osdmap = debugfs_create_file("osdmap", 0400, client->debugfs_dir, client, &osdmap_fops); client->debugfs_options = debugfs_create_file("client_options", 0400, client->debugfs_dir, client, &client_options_fops); } void ceph_debugfs_client_cleanup(struct ceph_client *client) { dout("ceph_debugfs_client_cleanup %p\n", client); debugfs_remove(client->debugfs_options); debugfs_remove(client->debugfs_osdmap); debugfs_remove(client->debugfs_monmap); debugfs_remove(client->osdc.debugfs_file); debugfs_remove(client->monc.debugfs_file); debugfs_remove(client->debugfs_dir); } #else /* CONFIG_DEBUG_FS */ void __init ceph_debugfs_init(void) { } void ceph_debugfs_cleanup(void) { } void ceph_debugfs_client_init(struct ceph_client *client) { } void ceph_debugfs_client_cleanup(struct ceph_client *client) { } #endif /* CONFIG_DEBUG_FS */