sbin/hammer/misc.c

   1 /*
   2  * Copyright (c) 2008 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Matthew Dillon <dillon@backplane.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $DragonFly: src/sbin/hammer/misc.c,v 1.5 2008/06/26 04:07:57 dillon Exp $
  35  */
  36
  37 #include "hammer_util.h"
  38
  39 void
  40 hammer_key_beg_init(hammer_base_elm_t base)
  41 {
  42         bzero(base, sizeof(*base));
  43
  44         base->localization = HAMMER_MIN_LOCALIZATION;
  45         base->obj_id = HAMMER_MIN_OBJID;
  46         base->key = HAMMER_MIN_KEY;
  47         base->create_tid = 1;
  48         base->rec_type = HAMMER_MIN_RECTYPE;
  49         base->obj_type = 0;
  50 }
  51
  52 void
  53 hammer_key_end_init(hammer_base_elm_t base)
  54 {
  55         bzero(base, sizeof(*base));
  56
  57         base->localization = HAMMER_MAX_LOCALIZATION;
  58         base->obj_id = HAMMER_MAX_OBJID;
  59         base->key = HAMMER_MAX_KEY;
  60         base->create_tid = HAMMER_MAX_TID;
  61         base->rec_type = HAMMER_MAX_RECTYPE;
  62         base->obj_type = 0;
  63 }
  64
  65 int
  66 getyn(void)
  67 {
  68         char buf[256];
  69         int len;
  70
  71         if (fgets(buf, sizeof(buf), stdin) == NULL)
  72                 return(0);
  73         len = strlen(buf);
  74         while (len && (buf[len-1] == '\n' || buf[len-1] == '\r'))
  75                 --len;
  76         buf[len] = 0;
  77         if (strcmp(buf, "y") == 0 ||
  78             strcmp(buf, "yes") == 0 ||
  79             strcmp(buf, "Y") == 0 ||
  80             strcmp(buf, "YES") == 0) {
  81                 return(1);
  82         }
  83         return(0);
  84 }
  85
  86 const char *
  87 sizetostr(off_t size)
  88 {
  89         static char buf[32];
  90
  91         if (size < 1024 / 2) {
  92                 snprintf(buf, sizeof(buf), "%6.2fB", (double)size);
  93         } else if (size < 1024 * 1024 / 2) {
  94                 snprintf(buf, sizeof(buf), "%6.2fKB", (double)size / 1024);
  95         } else if (size < 1024 * 1024 * 1024LL / 2) {
  96                 snprintf(buf, sizeof(buf), "%6.2fMB",
  97                         (double)size / (1024 * 1024));
  98         } else if (size < 1024 * 1024 * 1024LL * 1024LL / 2) {
  99                 snprintf(buf, sizeof(buf), "%6.2fGB",
 100                         (double)size / (1024 * 1024 * 1024LL));
 101         } else {
 102                 snprintf(buf, sizeof(buf), "%6.2fTB",
 103                         (double)size / (1024 * 1024 * 1024LL * 1024LL));
 104         }
 105         return(buf);
 106 }
 107
 108 int
 109 hammer_fs_to_vol(const char *fs, struct hammer_ioc_volume_list *p)
 110 {
 111         struct hammer_ioc_volume_list ioc;
 112         int fd;
 113
 114         fd = open(fs, O_RDONLY);
 115         if (fd < 0) {
 116                 perror("open");
 117                 return(-1);
 118         }
 119
 120         bzero(&ioc, sizeof(ioc));
 121         ioc.nvols = HAMMER_MAX_VOLUMES;
 122         ioc.vols = malloc(ioc.nvols * sizeof(*ioc.vols));
 123         if (ioc.vols == NULL) {
 124                 perror("malloc");
 125                 close(fd);
 126                 return(-1);
 127         }
 128
 129         if (ioctl(fd, HAMMERIOC_LIST_VOLUMES, &ioc) < 0) {
 130                 perror("ioctl");
 131                 close(fd);
 132                 free(ioc.vols);
 133                 return(-1);
 134         }
 135
 136         bcopy(&ioc, p, sizeof(ioc));
 137         close(fd);
 138
 139         return(0);
 140 }
 141
 142 int
 143 hammer_fs_to_rootvol(const char *fs, char *buf, int len)
 144 {
 145         struct hammer_ioc_volume_list ioc;
 146         int i;
 147
 148         if (hammer_fs_to_vol(fs, &ioc) == -1)
 149                 return(-1);
 150
 151         for (i = 0; i < ioc.nvols; i++) {
 152                 if (ioc.vols[i].vol_no == HAMMER_ROOT_VOLNO) {
 153                         strlcpy(buf, ioc.vols[i].device_name, len);
 154                         break;
 155                 }
 156         }
 157         assert(i != ioc.nvols);  /* root volume must exist */
 158
 159         free(ioc.vols);
 160         return(0);
 161 }
 162
 163 /*
 164  * Functions and data structure for zone statistics
 165  */
 166 /*
 167  * Each layer1 needs ((2^19) / 64) = 8192 uint64_t.
 168  */
 169 #define HAMMER_LAYER1_UINT64 8192
 170 #define HAMMER_LAYER1_BYTES (HAMMER_LAYER1_UINT64 * sizeof(uint64_t))
 171
 172 static int *l1_max = NULL;
 173 static uint64_t **l1_bits = NULL;
 174
 175 static __inline
 176 int
 177 hammer_set_layer_bits(uint64_t *bits, int i)
 178 {
 179         int q, r;
 180
 181         q = i >> 6;
 182         r = i & ((1 << 6) - 1);
 183
 184         bits += q;
 185         if (!((*bits) & ((uint64_t)1 << r))) {
 186                 (*bits) |= ((uint64_t)1 << r);
 187                 return(1);
 188         }
 189         return(0);  /* already seen this block */
 190 }
 191
 192 static
 193 void
 194 hammer_extend_layer1_bits(int vol, int newsiz, int oldsiz)
 195 {
 196         uint64_t *p;
 197
 198         assert(newsiz > oldsiz);
 199         assert(newsiz > 0 && oldsiz >= 0);
 200
 201         p = l1_bits[vol];
 202         if (p == NULL)
 203                 p = malloc(HAMMER_LAYER1_BYTES * newsiz);
 204         else
 205                 p = realloc(p, HAMMER_LAYER1_BYTES * newsiz);
 206         if (p == NULL)
 207                 err(1, "alloc");
 208         l1_bits[vol] = p;
 209
 210         p += HAMMER_LAYER1_UINT64 * oldsiz;
 211         bzero(p, HAMMER_LAYER1_BYTES * (newsiz - oldsiz));
 212 }
 213
 214 struct zone_stat*
 215 hammer_init_zone_stat(void)
 216 {
 217         return(calloc(HAMMER_MAX_ZONES, sizeof(struct zone_stat)));
 218 }
 219
 220 struct zone_stat*
 221 hammer_init_zone_stat_bits(void)
 222 {
 223         int i;
 224
 225         l1_max = calloc(HAMMER_MAX_VOLUMES, sizeof(int));
 226         if (l1_max == NULL)
 227                 err(1, "calloc");
 228
 229         l1_bits = calloc(HAMMER_MAX_VOLUMES, sizeof(uint64_t*));
 230         if (l1_bits == NULL)
 231                 err(1, "calloc");
 232
 233         for (i = 0; i < HAMMER_MAX_VOLUMES; i++) {
 234                 l1_max[i] = -1;  /* +1 needs to be 0 */
 235                 l1_bits[i] = NULL;
 236         }
 237         return(hammer_init_zone_stat());
 238 }
 239
 240 void
 241 hammer_cleanup_zone_stat(struct zone_stat *stats)
 242 {
 243         int i;
 244
 245         if (l1_bits) {
 246                 for (i = 0; i < HAMMER_MAX_VOLUMES; i++) {
 247                         free(l1_bits[i]);
 248                         l1_bits[i] = NULL;
 249                 }
 250         }
 251
 252         free(l1_bits);
 253         l1_bits = NULL;
 254
 255         free(l1_max);
 256         l1_max = NULL;
 257
 258         free(stats);
 259 }
 260
 261 static
 262 void
 263 _hammer_add_zone_stat(struct zone_stat *stats, int zone, int bytes,
 264         int new_block, int new_item)
 265 {
 266         struct zone_stat *sp = stats + zone;
 267
 268         if (new_block)
 269                 sp->blocks++;
 270         if (new_item)
 271                 sp->items++;
 272         sp->used += bytes;
 273 }
 274
 275 void
 276 hammer_add_zone_stat(struct zone_stat *stats, hammer_off_t offset, int bytes)
 277 {
 278         int zone, vol, i, j, new_block;
 279         uint64_t *p;
 280
 281         offset &= ~HAMMER_BIGBLOCK_MASK64;
 282         zone = HAMMER_ZONE_DECODE(offset);
 283         vol = HAMMER_VOL_DECODE(offset);
 284
 285         offset = HAMMER_OFF_SHORT_ENCODE(offset); /* cut off volume bits */
 286         i = HAMMER_BLOCKMAP_LAYER1_INDEX(offset);
 287         j = HAMMER_BLOCKMAP_LAYER2_INDEX(offset);
 288
 289         if (i > l1_max[vol]) {
 290                 assert(i < (HAMMER_BLOCKMAP_RADIX1 / HAMMER_MAX_VOLUMES));
 291                 hammer_extend_layer1_bits(vol, i + 1, l1_max[vol] + 1);
 292                 l1_max[vol] = i;
 293         }
 294
 295         p = l1_bits[vol] + i * HAMMER_LAYER1_UINT64;
 296         new_block = hammer_set_layer_bits(p, j);
 297         _hammer_add_zone_stat(stats, zone, bytes, new_block, 1);
 298 }
 299
 300 /*
 301  * If the same layer2 is used more than once the result will be wrong.
 302  */
 303 void
 304 hammer_add_zone_stat_layer2(struct zone_stat *stats,
 305         hammer_blockmap_layer2_t layer2)
 306 {
 307         _hammer_add_zone_stat(stats, layer2->zone,
 308                 HAMMER_BIGBLOCK_SIZE - layer2->bytes_free, 1, 0);
 309 }
 310
 311 static __inline
 312 double
 313 _calc_used_percentage(int64_t blocks, int64_t used)
 314 {
 315         double res;
 316
 317         if (blocks)
 318                 res = ((double)(used * 100)) / (blocks << HAMMER_BIGBLOCK_BITS);
 319         else
 320                 res = 0;
 321         return(res);
 322 }
 323
 324 void
 325 hammer_print_zone_stat(const struct zone_stat *stats)
 326 {
 327         int i;
 328         int64_t total_blocks = 0;
 329         int64_t total_items = 0;
 330         int64_t total_used = 0;
 331         const struct zone_stat *p = stats;
 332 #define INDENT ""
 333
 334         printf("HAMMER zone statistics\n");
 335         printf(INDENT"zone #             "
 336                 "blocks       items              used[B]             used[%%]\n");
 337         for (i = 0; i < HAMMER_MAX_ZONES; i++) {
 338                 printf(INDENT"zone %-2d %-10s %-12ju %-18ju %-19ju %g\n",
 339                         i, zone_labels[i], p->blocks, p->items, p->used,
 340                         _calc_used_percentage(p->blocks, p->used));
 341                 total_blocks += p->blocks;
 342                 total_items += p->items;
 343                 total_used += p->used;
 344                 p++;
 345         }
 346
 347         /*
 348          * Remember that zone0 is always 0% used and zone15 is
 349          * always 100% used.
 350          */
 351         printf(INDENT"--------------------------------------------------------------------------------\n");
 352         printf(INDENT"total              %-12ju %-18ju %-19ju %g\n",
 353                 (uintmax_t)total_blocks,
 354                 (uintmax_t)total_items,
 355                 (uintmax_t)total_used,
 356                 _calc_used_percentage(total_blocks, total_used));
 357 }