linux-stable/net/ceph/debugfs.c
Yan, Zheng 30c156d995 libceph: rados pool namespace support
Add pool namesapce pointer to struct ceph_file_layout and struct
ceph_object_locator. Pool namespace is used by when mapping object
to PG, it's also used when composing OSD request.

The namespace pointer in struct ceph_file_layout is RCU protected.
So libceph can read namespace without taking lock.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
[idryomov@gmail.com: ceph_oloc_destroy(), misc minor changes]
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2016-07-28 02:55:37 +02:00

395 lines
9.9 KiB
C

#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.in_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 %d flags 0x%x\n", map->epoch, 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];
int state = map->osd_state[i];
char sb[64];
seq_printf(s, "osd%d\t%s\t%3d%%\t(%s)\t%3d%%\n",
i, ceph_pr_addr(&addr->in_addr),
((map->osd_weight[i]*100) >> 16),
ceph_osdmap_state_str(sb, sizeof(sb), state),
((ceph_get_primary_affinity(map, i)*100) >> 16));
}
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);
}
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_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);
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\t", t->acting.primary);
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\t%u'%llu", req->r_attempts,
le32_to_cpu(req->r_replay_version.epoch),
le64_to_cpu(req->r_replay_version.version));
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));
}
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 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);
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);
if (ret)
return ret;
seq_putc(s, '\n');
return 0;
}
CEPH_DEFINE_SHOW_FUNC(monmap_show)
CEPH_DEFINE_SHOW_FUNC(osdmap_show)
CEPH_DEFINE_SHOW_FUNC(monc_show)
CEPH_DEFINE_SHOW_FUNC(osdc_show)
CEPH_DEFINE_SHOW_FUNC(client_options_show)
int ceph_debugfs_init(void)
{
ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
if (!ceph_debugfs_dir)
return -ENOMEM;
return 0;
}
void ceph_debugfs_cleanup(void)
{
debugfs_remove(ceph_debugfs_dir);
}
int ceph_debugfs_client_init(struct ceph_client *client)
{
int ret = -ENOMEM;
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);
BUG_ON(client->debugfs_dir);
client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
if (!client->debugfs_dir)
goto out;
client->monc.debugfs_file = debugfs_create_file("monc",
0600,
client->debugfs_dir,
client,
&monc_show_fops);
if (!client->monc.debugfs_file)
goto out;
client->osdc.debugfs_file = debugfs_create_file("osdc",
0600,
client->debugfs_dir,
client,
&osdc_show_fops);
if (!client->osdc.debugfs_file)
goto out;
client->debugfs_monmap = debugfs_create_file("monmap",
0600,
client->debugfs_dir,
client,
&monmap_show_fops);
if (!client->debugfs_monmap)
goto out;
client->debugfs_osdmap = debugfs_create_file("osdmap",
0600,
client->debugfs_dir,
client,
&osdmap_show_fops);
if (!client->debugfs_osdmap)
goto out;
client->debugfs_options = debugfs_create_file("client_options",
0600,
client->debugfs_dir,
client,
&client_options_show_fops);
if (!client->debugfs_options)
goto out;
return 0;
out:
ceph_debugfs_client_cleanup(client);
return ret;
}
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 */
int ceph_debugfs_init(void)
{
return 0;
}
void ceph_debugfs_cleanup(void)
{
}
int ceph_debugfs_client_init(struct ceph_client *client)
{
return 0;
}
void ceph_debugfs_client_cleanup(struct ceph_client *client)
{
}
#endif /* CONFIG_DEBUG_FS */
EXPORT_SYMBOL(ceph_debugfs_init);
EXPORT_SYMBOL(ceph_debugfs_cleanup);