1 /* Blue Sky: File Systems in the Cloud
3 * Copyright (C) 2009 The Regents of the University of California
4 * Written by Michael Vrable <mvrable@cs.ucsd.edu>
15 #include "bluesky-private.h"
17 /* Debugging support for BlueSky. */
19 static void inode_dump(gpointer key, gpointer value, gpointer user_data)
21 BlueSkyInode *inode = (BlueSkyInode *)value;
23 g_print("Inode %"PRIu64":\n", inode->inum);
25 gboolean locked = TRUE;
26 if (g_mutex_trylock(inode->lock)) {
28 g_mutex_unlock(inode->lock);
30 g_print(" Locked: %c Refcount: %d\n",
31 locked ? 'T' : 'F', inode->refcount);
33 g_print(" Type: %d Mode: %o\n", inode->type, inode->mode);
34 g_print(" change_count = %"PRIu64", change_commit = %"PRIu64", "
35 "change_cloud = %"PRIu64"\n",
36 inode->change_count, inode->change_commit, inode->change_cloud);
39 static void cloudlog_dump(gpointer key, gpointer value, gpointer user_data)
41 BlueSkyCloudLog *log = (BlueSkyCloudLog *)value;
43 for (int i = 0; i < sizeof(BlueSkyCloudID); i++) {
44 g_print("%02x", (uint8_t)(log->id.bytes[i]));
46 g_print(": refs=%d ty=%d inode=%"PRIu64" locs=%x log@(%d,%d) cloud@(%d,%d,%d)\n",
49 log->location_flags | (log->data != NULL ? 0x100 : 0),
50 log->log_seq, log->log_offset, log->location.directory,
51 log->location.sequence, log->location.offset);
54 static void cache_dump(gpointer key, gpointer value, gpointer user_data)
56 BlueSkyCacheFile *cache = (BlueSkyCacheFile *)value;
58 int64_t age = bluesky_get_current_time() - cache->atime;
59 g_print("%s addr=%p mapcount=%d refcount=%d atime_age=%f",
60 cache->filename, cache->addr, cache->mapcount, cache->refcount,
63 g_print(" (fetching)");
67 /* Dump a summary of filesystem state as it is cached in memory. */
68 void bluesky_debug_dump(BlueSkyFS *fs)
70 g_print("\n*** DEBUG DUMP FOR FILESYSTEM %s ***\n", fs->name);
71 g_print("Dirty blocks: %d\n", g_atomic_int_get(&fs->cache_dirty));
72 g_print("Cached inodes: %u\tNext inode: %"PRIu64"\n",
73 g_hash_table_size(fs->inodes), fs->next_inum);
74 g_print("Cloudlog cache: %d dirty, %d writeback, %d journal, %d cloud\n",
75 g_atomic_int_get(&fs->cache_log_dirty),
76 g_atomic_int_get(&fs->cache_log_writeback),
77 g_atomic_int_get(&fs->cache_log_journal),
78 g_atomic_int_get(&fs->cache_log_cloud));
81 g_print("Unsynced inode list:");
82 for (item = fs->unlogged_list.next; item != NULL; item = item->next) {
83 g_print(" %"PRIu64";", ((BlueSkyInode *)item->data)->inum);
86 g_print("Dirty inode LRU list:");
87 for (item = fs->dirty_list.next; item != NULL; item = item->next) {
88 g_print(" %"PRIu64";", ((BlueSkyInode *)item->data)->inum);
91 g_print("Accessed inode LRU list:");
92 for (item = fs->accessed_list.next; item != NULL; item = item->next) {
93 g_print(" %"PRIu64";", ((BlueSkyInode *)item->data)->inum);
97 g_hash_table_foreach(fs->inodes, inode_dump, fs);
99 g_print("\nLog Objects:\n");
100 g_hash_table_foreach(fs->locations, cloudlog_dump, fs);
102 g_print("\nJournal/Cache Files:\n");
103 g_hash_table_foreach(fs->log->mmap_cache, cache_dump, fs);
107 /* Statistics counters: for operation counts, bytes transferred, etc. */
108 static GStaticMutex stats_lock = G_STATIC_MUTEX_INIT;
109 static GList *stats_list = NULL;
111 struct bluesky_stats *bluesky_stats_new(const char *name)
113 struct bluesky_stats *stats = g_new0(struct bluesky_stats, 1);
115 g_static_mutex_lock(&stats_lock);
116 stats_list = g_list_append(stats_list, stats);
117 g_static_mutex_unlock(&stats_lock);
121 void bluesky_stats_add(struct bluesky_stats *stats, int64_t value)
123 __sync_fetch_and_add(&stats->count, (int64_t)1);
124 __sync_fetch_and_add(&stats->sum, value);
127 void bluesky_stats_dump_all()
129 g_static_mutex_lock(&stats_lock);
130 for (GList *item = stats_list; item != NULL; item = item->next) {
131 struct bluesky_stats *stats = (struct bluesky_stats *)item->data;
132 g_print("%s: count=%"PRIi64" sum=%"PRIi64"\n",
133 stats->name, stats->count, stats->sum);
135 g_static_mutex_unlock(&stats_lock);