* Copyright (C) 2009 The Regents of the University of California
* Written by Michael Vrable <mvrable@cs.ucsd.edu>
*
- * TODO: Licensing
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
*/
#include <stdint.h>
g_print("Inode %"PRIu64":\n", inode->inum);
- gboolean locked = FALSE;
+ gboolean locked = TRUE;
if (g_mutex_trylock(inode->lock)) {
- locked = TRUE;
+ locked = FALSE;
g_mutex_unlock(inode->lock);
}
g_print(" Locked: %c Refcount: %d\n",
locked ? 'T' : 'F', inode->refcount);
g_print(" Type: %d Mode: %o\n", inode->type, inode->mode);
- g_print(" change_count = %"PRIu64", change_commit = %"PRIu64"\n",
- inode->change_count, inode->change_commit);
+ g_print(" change_count = %"PRIu64", change_commit = %"PRIu64", "
+ "change_cloud = %"PRIu64"\n",
+ inode->change_count, inode->change_commit, inode->change_cloud);
+}
+
+static void cloudlog_dump(gpointer key, gpointer value, gpointer user_data)
+{
+ BlueSkyCloudLog *log = (BlueSkyCloudLog *)value;
+
+ for (int i = 0; i < sizeof(BlueSkyCloudID); i++) {
+ g_print("%02x", (uint8_t)(log->id.bytes[i]));
+ }
+ g_print(": refs=%d ty=%d inode=%"PRIu64" locs=%x log@(%d,%d) cloud@(%d,%d,%d)\n",
+ log->refcount,
+ log->type, log->inum,
+ log->location_flags | (log->data != NULL ? 0x100 : 0),
+ log->log_seq, log->log_offset, log->location.directory,
+ log->location.sequence, log->location.offset);
}
+static void cache_dump(gpointer key, gpointer value, gpointer user_data)
+{
+ BlueSkyCacheFile *cache = (BlueSkyCacheFile *)value;
+
+ int64_t age = bluesky_get_current_time() - cache->atime;
+ g_print("%s addr=%p mapcount=%d refcount=%d atime_age=%f",
+ cache->filename, cache->addr, cache->mapcount, cache->refcount,
+ age / 1e6);
+ if (cache->fetching)
+ g_print(" (fetching)");
+ g_print("\n");
+}
+
+
+void inode_map_dump(GSequence *inode_map)
+{
+ GSequenceIter *i, *j;
+
+ g_print("\nInode map dump:\n");
+ for (i = g_sequence_get_begin_iter(inode_map);
+ !g_sequence_iter_is_end(i); i = g_sequence_iter_next(i))
+ {
+ InodeMapRange *range = (InodeMapRange *)g_sequence_get(i);
+
+ g_print(" Range [%"PRIu64", %"PRIu64"]\n", range->start, range->end);
+
+ for (j = g_sequence_get_begin_iter(range->map_entries);
+ !g_sequence_iter_is_end(j); j = g_sequence_iter_next(j))
+ {
+ InodeMapEntry *entry = (InodeMapEntry *)g_sequence_get(j);
+ BlueSkyCloudLog *item = entry->item;
+ if (item != NULL) {
+ char *id = bluesky_cloudlog_id_to_string(item->id);
+ g_print(" Entry %"PRIu64" id=%s\n", entry->inum, id);
+ g_free(id);
+ } else {
+ g_print(" Entry %"PRIu64" not available\n", entry->inum);
+ }
+ }
+ }
+}
/* Dump a summary of filesystem state as it is cached in memory. */
void bluesky_debug_dump(BlueSkyFS *fs)
{
- g_print("*** DEBUG DUMP FOR FILESYSTEM %s ***\n", fs->name);
+ g_print("\n*** DEBUG DUMP FOR FILESYSTEM %s ***\n", fs->name);
+ g_print("Dirty blocks: %d\n", g_atomic_int_get(&fs->cache_dirty));
g_print("Cached inodes: %u\tNext inode: %"PRIu64"\n",
g_hash_table_size(fs->inodes), fs->next_inum);
+ g_print("Cloudlog cache: %d dirty, %d writeback, %d journal, %d cloud\n",
+ g_atomic_int_get(&fs->cache_log_dirty),
+ g_atomic_int_get(&fs->cache_log_writeback),
+ g_atomic_int_get(&fs->cache_log_journal),
+ g_atomic_int_get(&fs->cache_log_cloud));
+
+ GList *item;
+ g_print("Unsynced inode list:");
+ for (item = fs->unlogged_list.next; item != NULL; item = item->next) {
+ g_print(" %"PRIu64";", ((BlueSkyInode *)item->data)->inum);
+ }
+ g_print("\n");
+ g_print("Dirty inode LRU list:");
+ for (item = fs->dirty_list.next; item != NULL; item = item->next) {
+ g_print(" %"PRIu64";", ((BlueSkyInode *)item->data)->inum);
+ }
+ g_print("\n");
+ g_print("Accessed inode LRU list:");
+ for (item = fs->accessed_list.next; item != NULL; item = item->next) {
+ g_print(" %"PRIu64";", ((BlueSkyInode *)item->data)->inum);
+ }
+ g_print("\n");
g_hash_table_foreach(fs->inodes, inode_dump, fs);
+
+ g_print("\nLog Objects:\n");
+ g_hash_table_foreach(fs->locations, cloudlog_dump, fs);
+
+ g_print("\nJournal/Cache Files:\n");
+ g_hash_table_foreach(fs->log->mmap_cache, cache_dump, fs);
+ g_print("\n");
+
+ g_mutex_lock(fs->lock);
+ inode_map_dump(fs->inode_map);
+ g_mutex_unlock(fs->lock);
+}
+
+/* Statistics counters: for operation counts, bytes transferred, etc. */
+static GStaticMutex stats_lock = G_STATIC_MUTEX_INIT;
+static GList *stats_list = NULL;
+
+struct bluesky_stats *bluesky_stats_new(const char *name)
+{
+ struct bluesky_stats *stats = g_new0(struct bluesky_stats, 1);
+ stats->name = name;
+ g_static_mutex_lock(&stats_lock);
+ stats_list = g_list_append(stats_list, stats);
+ g_static_mutex_unlock(&stats_lock);
+ return stats;
+}
+
+void bluesky_stats_add(struct bluesky_stats *stats, int64_t value)
+{
+ __sync_fetch_and_add(&stats->count, (int64_t)1);
+ __sync_fetch_and_add(&stats->sum, value);
+}
+
+void bluesky_stats_dump_all()
+{
+ g_static_mutex_lock(&stats_lock);
+ for (GList *item = stats_list; item != NULL; item = item->next) {
+ struct bluesky_stats *stats = (struct bluesky_stats *)item->data;
+ g_print("%s: count=%"PRIi64" sum=%"PRIi64"\n",
+ stats->name, stats->count, stats->sum);
+ }
+ g_static_mutex_unlock(&stats_lock);
+}
+
+static void periodic_stats_dumper(FILE *f)
+{
+ const int64_t interval = 10 * 1000000000ULL;
+ bluesky_time_hires timestamp = bluesky_now_hires();
+ bluesky_time_hires next_timestamp = timestamp;
+
+ while (TRUE) {
+ g_static_mutex_lock(&stats_lock);
+ timestamp = bluesky_now_hires();
+ fprintf(f, "********\ntime=%f\n\n", timestamp / 1e9);
+ for (GList *item = stats_list; item != NULL; item = item->next) {
+ struct bluesky_stats *stats = (struct bluesky_stats *)item->data;
+ fprintf(f, "%s: count=%"PRIi64" sum=%"PRIi64"\n",
+ stats->name, stats->count, stats->sum);
+ }
+ g_static_mutex_unlock(&stats_lock);
+ fflush(f);
+
+ /* Wait until ten seconds from the last timestamp, with a few extra
+ * checks for sanity (always try to wait some amount of time in the
+ * range [0, 20] seconds). */
+ timestamp = bluesky_now_hires();
+ next_timestamp += interval;
+ if (next_timestamp < timestamp) {
+ next_timestamp = timestamp;
+ continue;
+ }
+ if (next_timestamp - timestamp > 2 * interval) {
+ next_timestamp = timestamp + interval;
+ }
+
+ struct timespec delay;
+ delay.tv_sec = (next_timestamp - timestamp) / 1000000000;
+ delay.tv_nsec = (next_timestamp - timestamp) % 1000000000;
+ nanosleep(&delay, NULL);
+ }
+}
+
+/* Start a background thread that will periodically dump statistics counters to
+ * he specified file every ten seconds. */
+void bluesky_stats_run_periodic_dump(FILE *f)
+{
+ g_thread_create((GThreadFunc)periodic_stats_dumper, f, FALSE, NULL);
}
projects / bluesky.git / blobdiff