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| author | John Spray <john.spray@redhat.com> | 2014-09-12 16:58:49 +0100 |
|---|---|---|
| committer | Sage Weil <sage@redhat.com> | 2014-10-14 12:57:01 -0700 |
| commit | 14ed97033dac4cc5fd516bfe3e37d2fc74804684 (patch) | |
| tree | b77e707dd092090c909055d7b4e3342085567edc /fs/ceph | |
| parent | a687ecaf50f18329206c6b78764a8c7bd30a9df0 (diff) | |
| download | linux-14ed97033dac4cc5fd516bfe3e37d2fc74804684.tar.bz2 | |
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>
Diffstat (limited to 'fs/ceph')
| -rw-r--r-- | fs/ceph/debugfs.c | 46 | ||||
| -rw-r--r-- | fs/ceph/super.h | 1 |
2 files changed, 47 insertions, 0 deletions
diff --git a/fs/ceph/debugfs.c b/fs/ceph/debugfs.c index 5a743ac141ab..5d5a4c8c8496 100644 --- a/fs/ceph/debugfs.c +++ b/fs/ceph/debugfs.c @@ -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, diff --git a/fs/ceph/super.h b/fs/ceph/super.h index f62a09863ff1..b82f507979b8 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -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 |