#include "ceph_debug.h"
#include <linux/module.h>
#include <linux/ctype.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include "super.h"
#include "mds_client.h"
/*
* Implement /sys/kernel/debug/ceph fun
*
* /sys/kernel/debug/ceph/client* - an instance of the ceph client
* .../osdmap - current osdmap
* .../mdsmap - current mdsmap
* .../monmap - current monmap
* .../osdc - active osd requests
* .../mdsc - active mds requests
* .../monc - mon client state
* .../dentry_lru - dump contents of dentry lru
* .../caps - expose cap (reservation) stats
*/
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),
pr_addr(&inst->addr.in_addr));
}
return 0;
}
static int mdsmap_show(struct seq_file *s, void *p)
{
int i;
struct ceph_client *client = s->private;
if (client->mdsc.mdsmap == NULL)
return 0;
seq_printf(s, "epoch %d\n", client->mdsc.mdsmap->m_epoch);
seq_printf(s, "root %d\n", client->mdsc.mdsmap->m_root);
seq_printf(s, "session_timeout %d\n",
client->mdsc.mdsmap->m_session_timeout);
seq_printf(s, "session_autoclose %d\n",
client->mdsc.mdsmap->m_session_autoclose);
for (i = 0; i < client->mdsc.mdsmap->m_max_mds; i++) {
struct ceph_entity_addr *addr =
&client->mdsc.mdsmap->m_info[i].addr;
int state = client->mdsc.mdsmap->m_info[i].state;
seq_printf(s, "\tmds%d\t%s\t(%s)\n", i, pr_addr(&addr->in_addr),
ceph_mds_state_name(state));
}
return 0;
}
static int osdmap_show(struct seq_file *s, void *p)
{
int i;
struct ceph_client *client = s->private;
if (client->osdc.osdmap == NULL)
return 0;
seq_printf(s, "epoch %d\n", client->osdc.osdmap->epoch);
seq_printf(s, "flags%s%s\n",
(client->osdc.osdmap->flags & CEPH_OSDMAP_NEARFULL) ?
" NEARFULL" : "",
(client->osdc.osdmap->flags & CEPH_OSDMAP_FULL) ?
" FULL" : "");
for (i = 0; i < client->osdc.osdmap->num_pools; i++) {
struct ceph_pg_pool_info *pool =
&client->osdc.osdmap->pg_pool[i];
seq_printf(s, "pg_pool %d pg_num %d / %d, lpg_num %d / %d\n",
i, pool->v.pg_num, pool->pg_num_mask,
pool->v.lpg_num, pool->lpg_num_mask);
}
for (i = 0; i < client->osdc.osdmap->max_osd; i++) {
struct ceph_entity_addr *addr =
&client->osdc.osdmap->osd_addr[i];
int state = client->osdc.osdmap->osd_state[i];
char sb[64];
seq_printf(s, "\tosd%d\t%s\t%3d%%\t(%s)\n",
i, pr_addr(&addr->in_addr),
((client->osdc.osdmap->osd_weight[i]*100) >> 16),
ceph_osdmap_state_str(sb, sizeof(sb), state));
}
return 0;
}
static int monc_show(struct seq_file *s, void *p)
{
struct ceph_client *client = s->private;
struct ceph_mon_statfs_request *req;
u64 nexttid = 0;
int got;
struct ceph_mon_client *monc = &client->monc;
mutex_lock(&monc->mutex);
if (monc->have_mdsmap)
seq_printf(s, "have mdsmap %u\n", (unsigned)monc->have_mdsmap);
if (monc->have_osdmap)
seq_printf(s, "have osdmap %u\n", (unsigned)monc->have_osdmap);
if (monc->want_next_osdmap)
seq_printf(s, "want next osdmap\n");
while (nexttid < monc->last_tid) {
got = radix_tree_gang_lookup(&monc->statfs_request_tree,
(void **)&req, nexttid, 1);
if (got == 0)
break;
nexttid = req->tid + 1;
seq_printf(s, "%lld statfs\n", req->tid);
}
mutex_unlock(&monc->mutex);
return 0;
}
static int mdsc_show(struct seq_file *s, void *p)
{
struct ceph_client *client = s->private;
struct ceph_mds_request *req;
u64 nexttid = 0;
int got;
struct ceph_mds_client *mdsc = &client->mdsc;
int pathlen;
u64 pathbase;
char *path;
mutex_lock(&mdsc->mutex);
while (nexttid < mdsc->last_tid) {
got = radix_tree_gang_lookup(&mdsc->request_tree,
(void **)&req, nexttid, 1);
if (got == 0)
break;
nexttid = req->r_tid + 1;
if (req->r_request)
seq_printf(s, "%lld\tmds%d\t", req->r_tid, req->r_mds);
else
seq_printf(s, "%lld\t(no request)\t", req->r_tid);
seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
if (req->r_got_unsafe)
seq_printf(s, "\t(unsafe)");
else
seq_printf(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);
spin_lock(&req->r_dentry->d_lock);
seq_printf(s, " #%llx/%.*s (%s)",
ceph_ino(req->r_dentry->d_parent->d_inode),
req->r_dentry->d_name.len,
req->r_dentry->d_name.name,
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);
}
if (req->r_old_dentry) {
path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
&pathbase, 0);
spin_lock(&req->r_old_dentry->d_lock);
seq_printf(s, " #%llx/%.*s (%s)",
ceph_ino(req->r_old_dentry->d_parent->d_inode),
req->r_old_dentry->d_name.len,
req->r_old_dentry->d_name.name,
path ? path : "");
spin_unlock(&req->r_old_dentry->d_lock);
kfree(path);
} else if (req->r_path2) {
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_printf(s, "\n");
}
mutex_unlock(&mdsc->mutex);
return 0;
}
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 *p;
mutex_lock(&osdc->request_mutex);
for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
struct ceph_osd_request *req;
struct ceph_osd_request_head *head;
struct ceph_osd_op *op;
int num_ops;
int opcode, olen;
int i;
req = rb_entry(p, struct ceph_osd_request, r_node);
seq_printf(s, "%lld\tosd%d\t", req->r_tid,
req->r_osd ? req->r_osd->o_osd : -1);
head = req->r_request->front.iov_base;
op = (void *)(head + 1);
num_ops = le16_to_cpu(head->num_ops);
olen = le32_to_cpu(head->object_len);
seq_printf(s, "%.*s", olen,
(const char *)(head->ops + num_ops));
if (req->r_reassert_version.epoch)
seq_printf(s, "\t%u'%llu",
(unsigned)le32_to_cpu(req->r_reassert_version.epoch),
le64_to_cpu(req->r_reassert_version.version));
else
seq_printf(s, "\t");
for (i = 0; i < num_ops; i++) {
opcode = le16_to_cpu(op->op);
seq_printf(s, "\t%s", ceph_osd_op_name(opcode));
op++;
}
seq_printf(s, "\n");
}
mutex_unlock(&osdc->request_mutex);
return 0;
}
static int caps_show(struct seq_file *s, void *p)
{
struct ceph_client *client = p;
int total, avail, used, reserved;
ceph_reservation_status(client, &total, &avail, &used, &reserved);
seq_printf(s, "total\t\t%d\n"
"avail\t\t%d\n"
"used\t\t%d\n"
"reserved\t%d\n",
total, avail, used, reserved);
return 0;
}
static int dentry_lru_show(struct seq_file *s, void *ptr)
{
struct ceph_client *client = s->private;
struct ceph_mds_client *mdsc = &client->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%.*s\n",
di, dentry, dentry->d_name.len, dentry->d_name.name);
}
spin_unlock(&mdsc->dentry_lru_lock);
return 0;
}
#define DEFINE_SHOW_FUNC(name) \
static int name##_open(struct inode *inode, struct file *file) \
{ \
struct seq_file *sf; \
int ret; \
\
ret = single_open(file, name, NULL); \
sf = file->private_data; \
sf->private = inode->i_private; \
return ret; \
} \
\
static const struct file_operations name##_fops = { \
.open = name##_open, \
.read = seq_read, \
.llseek = seq_lseek, \
.release = single_release, \
};
DEFINE_SHOW_FUNC(monmap_show)
DEFINE_SHOW_FUNC(mdsmap_show)
DEFINE_SHOW_FUNC(osdmap_show)
DEFINE_SHOW_FUNC(monc_show)
DEFINE_SHOW_FUNC(mdsc_show)
DEFINE_SHOW_FUNC(osdc_show)
DEFINE_SHOW_FUNC(dentry_lru_show)
DEFINE_SHOW_FUNC(caps_show)
int __init 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 = 0;
char name[80];
snprintf(name, sizeof(name), FSID_FORMAT ".client%lld",
PR_FSID(&client->monc.monmap->fsid), client->whoami);
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->mdsc.debugfs_file = debugfs_create_file("mdsc",
0600,
client->debugfs_dir,
client,
&mdsc_show_fops);
if (!client->mdsc.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_mdsmap = debugfs_create_file("mdsmap",
0600,
client->debugfs_dir,
client,
&mdsmap_show_fops);
if (!client->debugfs_mdsmap)
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_dentry_lru = debugfs_create_file("dentry_lru",
0600,
client->debugfs_dir,
client,
&dentry_lru_show_fops);
if (!client->debugfs_dentry_lru)
goto out;
client->debugfs_caps = debugfs_create_file("caps",
0400,
client->debugfs_dir,
client,
&caps_show_fops);
if (!client->debugfs_caps)
goto out;
return 0;
out:
ceph_debugfs_client_cleanup(client);
return ret;
}
void ceph_debugfs_client_cleanup(struct ceph_client *client)
{
debugfs_remove(client->debugfs_caps);
debugfs_remove(client->debugfs_dentry_lru);
debugfs_remove(client->debugfs_osdmap);
debugfs_remove(client->debugfs_mdsmap);
debugfs_remove(client->debugfs_monmap);
debugfs_remove(client->osdc.debugfs_file);
debugfs_remove(client->mdsc.debugfs_file);
debugfs_remove(client->monc.debugfs_file);
debugfs_remove(client->debugfs_dir);
}
