322 lines
7.7 KiB
C
322 lines
7.7 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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#include <linux/ceph/ceph_debug.h>
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#include <linux/device.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/ctype.h>
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <linux/ceph/libceph.h>
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#include <linux/ceph/mon_client.h>
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#include <linux/ceph/auth.h>
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#include <linux/ceph/debugfs.h>
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#include "super.h"
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#ifdef CONFIG_DEBUG_FS
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#include "mds_client.h"
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static int mdsmap_show(struct seq_file *s, void *p)
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{
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int i;
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struct ceph_fs_client *fsc = s->private;
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struct ceph_mdsmap *mdsmap;
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if (!fsc->mdsc || !fsc->mdsc->mdsmap)
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return 0;
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mdsmap = fsc->mdsc->mdsmap;
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seq_printf(s, "epoch %d\n", mdsmap->m_epoch);
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seq_printf(s, "root %d\n", mdsmap->m_root);
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seq_printf(s, "max_mds %d\n", mdsmap->m_max_mds);
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seq_printf(s, "session_timeout %d\n", mdsmap->m_session_timeout);
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seq_printf(s, "session_autoclose %d\n", mdsmap->m_session_autoclose);
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for (i = 0; i < mdsmap->m_num_mds; i++) {
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struct ceph_entity_addr *addr = &mdsmap->m_info[i].addr;
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int state = mdsmap->m_info[i].state;
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seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
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ceph_pr_addr(&addr->in_addr),
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ceph_mds_state_name(state));
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}
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return 0;
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}
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/*
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* mdsc debugfs
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*/
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static int mdsc_show(struct seq_file *s, void *p)
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{
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struct ceph_fs_client *fsc = s->private;
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struct ceph_mds_client *mdsc = fsc->mdsc;
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struct ceph_mds_request *req;
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struct rb_node *rp;
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int pathlen;
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u64 pathbase;
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char *path;
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mutex_lock(&mdsc->mutex);
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for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) {
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req = rb_entry(rp, struct ceph_mds_request, r_node);
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if (req->r_request && req->r_session)
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seq_printf(s, "%lld\tmds%d\t", req->r_tid,
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req->r_session->s_mds);
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else if (!req->r_request)
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seq_printf(s, "%lld\t(no request)\t", req->r_tid);
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else
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seq_printf(s, "%lld\t(no session)\t", req->r_tid);
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seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
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if (test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags))
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seq_puts(s, "\t(unsafe)");
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else
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seq_puts(s, "\t");
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if (req->r_inode) {
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seq_printf(s, " #%llx", ceph_ino(req->r_inode));
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} else if (req->r_dentry) {
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path = ceph_mdsc_build_path(req->r_dentry, &pathlen,
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&pathbase, 0);
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if (IS_ERR(path))
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path = NULL;
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spin_lock(&req->r_dentry->d_lock);
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seq_printf(s, " #%llx/%pd (%s)",
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ceph_ino(d_inode(req->r_dentry->d_parent)),
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req->r_dentry,
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path ? path : "");
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spin_unlock(&req->r_dentry->d_lock);
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kfree(path);
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} else if (req->r_path1) {
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seq_printf(s, " #%llx/%s", req->r_ino1.ino,
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req->r_path1);
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} else {
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seq_printf(s, " #%llx", req->r_ino1.ino);
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}
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if (req->r_old_dentry) {
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path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
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&pathbase, 0);
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if (IS_ERR(path))
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path = NULL;
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spin_lock(&req->r_old_dentry->d_lock);
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seq_printf(s, " #%llx/%pd (%s)",
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req->r_old_dentry_dir ?
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ceph_ino(req->r_old_dentry_dir) : 0,
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req->r_old_dentry,
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path ? path : "");
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spin_unlock(&req->r_old_dentry->d_lock);
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kfree(path);
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} else if (req->r_path2 && req->r_op != CEPH_MDS_OP_SYMLINK) {
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if (req->r_ino2.ino)
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seq_printf(s, " #%llx/%s", req->r_ino2.ino,
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req->r_path2);
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else
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seq_printf(s, " %s", req->r_path2);
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}
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seq_puts(s, "\n");
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}
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mutex_unlock(&mdsc->mutex);
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return 0;
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}
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static int caps_show(struct seq_file *s, void *p)
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{
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struct ceph_fs_client *fsc = s->private;
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int total, avail, used, reserved, min;
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ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
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seq_printf(s, "total\t\t%d\n"
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"avail\t\t%d\n"
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"used\t\t%d\n"
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"reserved\t%d\n"
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"min\t%d\n",
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total, avail, used, reserved, min);
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return 0;
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}
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static int dentry_lru_show(struct seq_file *s, void *ptr)
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{
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struct ceph_fs_client *fsc = s->private;
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struct ceph_mds_client *mdsc = fsc->mdsc;
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struct ceph_dentry_info *di;
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spin_lock(&mdsc->dentry_lru_lock);
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list_for_each_entry(di, &mdsc->dentry_lru, lru) {
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struct dentry *dentry = di->dentry;
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seq_printf(s, "%p %p\t%pd\n",
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di, dentry, dentry);
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}
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spin_unlock(&mdsc->dentry_lru_lock);
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return 0;
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}
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static int mds_sessions_show(struct seq_file *s, void *ptr)
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{
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struct ceph_fs_client *fsc = s->private;
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struct ceph_mds_client *mdsc = fsc->mdsc;
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struct ceph_auth_client *ac = fsc->client->monc.auth;
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struct ceph_options *opt = fsc->client->options;
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int mds = -1;
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mutex_lock(&mdsc->mutex);
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/* The 'num' portion of an 'entity name' */
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seq_printf(s, "global_id %llu\n", ac->global_id);
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/* The -o name mount argument */
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seq_printf(s, "name \"%s\"\n", opt->name ? opt->name : "");
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/* The list of MDS session rank+state */
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for (mds = 0; mds < mdsc->max_sessions; mds++) {
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struct ceph_mds_session *session =
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__ceph_lookup_mds_session(mdsc, mds);
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if (!session) {
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continue;
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}
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mutex_unlock(&mdsc->mutex);
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seq_printf(s, "mds.%d %s\n",
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session->s_mds,
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ceph_session_state_name(session->s_state));
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ceph_put_mds_session(session);
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mutex_lock(&mdsc->mutex);
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}
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mutex_unlock(&mdsc->mutex);
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return 0;
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}
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CEPH_DEFINE_SHOW_FUNC(mdsmap_show)
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CEPH_DEFINE_SHOW_FUNC(mdsc_show)
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CEPH_DEFINE_SHOW_FUNC(caps_show)
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CEPH_DEFINE_SHOW_FUNC(dentry_lru_show)
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CEPH_DEFINE_SHOW_FUNC(mds_sessions_show)
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/*
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* debugfs
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*/
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static int congestion_kb_set(void *data, u64 val)
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{
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struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
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fsc->mount_options->congestion_kb = (int)val;
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return 0;
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}
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static int congestion_kb_get(void *data, u64 *val)
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{
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struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
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*val = (u64)fsc->mount_options->congestion_kb;
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return 0;
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}
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DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
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congestion_kb_set, "%llu\n");
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void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
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{
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dout("ceph_fs_debugfs_cleanup\n");
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debugfs_remove(fsc->debugfs_bdi);
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debugfs_remove(fsc->debugfs_congestion_kb);
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debugfs_remove(fsc->debugfs_mdsmap);
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debugfs_remove(fsc->debugfs_mds_sessions);
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debugfs_remove(fsc->debugfs_caps);
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debugfs_remove(fsc->debugfs_mdsc);
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debugfs_remove(fsc->debugfs_dentry_lru);
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}
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int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
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{
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char name[100];
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int err = -ENOMEM;
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dout("ceph_fs_debugfs_init\n");
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BUG_ON(!fsc->client->debugfs_dir);
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fsc->debugfs_congestion_kb =
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debugfs_create_file("writeback_congestion_kb",
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0600,
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fsc->client->debugfs_dir,
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fsc,
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&congestion_kb_fops);
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if (!fsc->debugfs_congestion_kb)
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goto out;
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snprintf(name, sizeof(name), "../../bdi/%s",
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dev_name(fsc->sb->s_bdi->dev));
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fsc->debugfs_bdi =
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debugfs_create_symlink("bdi",
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fsc->client->debugfs_dir,
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name);
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if (!fsc->debugfs_bdi)
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goto out;
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fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
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0600,
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fsc->client->debugfs_dir,
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fsc,
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&mdsmap_show_fops);
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if (!fsc->debugfs_mdsmap)
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goto out;
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fsc->debugfs_mds_sessions = debugfs_create_file("mds_sessions",
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0600,
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fsc->client->debugfs_dir,
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fsc,
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&mds_sessions_show_fops);
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if (!fsc->debugfs_mds_sessions)
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goto out;
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fsc->debugfs_mdsc = debugfs_create_file("mdsc",
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0600,
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fsc->client->debugfs_dir,
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fsc,
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&mdsc_show_fops);
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if (!fsc->debugfs_mdsc)
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goto out;
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fsc->debugfs_caps = debugfs_create_file("caps",
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0400,
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fsc->client->debugfs_dir,
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fsc,
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&caps_show_fops);
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if (!fsc->debugfs_caps)
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goto out;
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fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
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0600,
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fsc->client->debugfs_dir,
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fsc,
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&dentry_lru_show_fops);
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if (!fsc->debugfs_dentry_lru)
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goto out;
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return 0;
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out:
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ceph_fs_debugfs_cleanup(fsc);
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return err;
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}
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#else /* CONFIG_DEBUG_FS */
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int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
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{
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return 0;
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}
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void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
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{
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}
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#endif /* CONFIG_DEBUG_FS */
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