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ceph: additional debugfs output 

MDS session state and client global ID is
useful instrumentation when testing.

Signed-off-by: John Spray <john.spray@redhat.com>
This commit is contained in:
John Spray 2014-09-12 16:58:49 +01:00 committed by Sage Weil
parent a687ecaf50
commit 14ed97033d
2 changed files with 47 additions and 0 deletions
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46
fs/ceph/debugfs.c
View File

@ -158,10 +158,47 @@ static int dentry_lru_show(struct seq_file *s, void *ptr)
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)
/*
@ -193,6 +230,7 @@ void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
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);
@ -231,6 +269,14 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
if (!fsc->debugfs_mdsmap)
goto out;
fsc->debugfs_mds_sessions = debugfs_create_file("mds_sessions",
0600,
fsc->client->debugfs_dir,
fsc,
&mds_sessions_show_fops);
if (!fsc->debugfs_mds_sessions)
goto out;
fsc->debugfs_mdsc = debugfs_create_file("mdsc",
0600,
fsc->client->debugfs_dir,

1
fs/ceph/super.h
View File

@ -95,6 +95,7 @@ struct ceph_fs_client {
struct dentry *debugfs_congestion_kb;
struct dentry *debugfs_bdi;
struct dentry *debugfs_mdsc, *debugfs_mdsmap;
struct dentry *debugfs_mds_sessions;
#endif
#ifdef CONFIG_CEPH_FSCACHE