- printf("sb.version\t\t%" PRIu64, sb.version);
- switch (sb.version) {
- // These are handled the same by the kernel
- case BCACHE_SB_VERSION_CDEV:
- case BCACHE_SB_VERSION_CDEV_WITH_UUID:
- printf(" [cache device]\n");
- break;
-
- // The second adds data offset support
- case BCACHE_SB_VERSION_BDEV:
- case BCACHE_SB_VERSION_BDEV_WITH_OFFSET:
- printf(" [backing device]\n");
- break;
-
- default:
- printf(" [unknown]\n");
- // exit code?
- return 0;
- }
-
- putchar('\n');
-
- uuid_unparse(sb.uuid, uuid);
- printf("dev.uuid\t\t%s\n", uuid);
-
- printf("dev.sectors_per_block\t%u\n"
- "dev.sectors_per_bucket\t%u\n",
- sb.block_size,
- sb.bucket_size);
-
- if (!SB_IS_BDEV(&sb)) {
- // total_sectors includes the superblock;
- printf("dev.cache.first_sector\t%u\n"
- "dev.cache.cache_sectors\t%ju\n"
- "dev.cache.total_sectors\t%ju\n"
- "dev.cache.discard\t%s\n"
- "dev.cache.pos\t\t%u\n",
- sb.bucket_size * sb.first_bucket,
- sb.bucket_size * (sb.nbuckets - sb.first_bucket),
- sb.bucket_size * sb.nbuckets,
- CACHE_DISCARD(&sb) ? "yes" : "no",
- sb.nr_this_dev);
- } else {
- uint64_t first_sector;
- if (sb.version == BCACHE_SB_VERSION_BDEV) {
- first_sector = BDEV_DATA_START_DEFAULT;
- } else {
- if (sb.keys == 1 || sb.d[0]) {
- fprintf(stderr,
- "Possible experimental format detected, bailing\n");
- exit(3);
- }
- first_sector = sb.data_offset;
- }
- printf("dev.data.first_sector\t%ju\n"
- "dev.data.cache_mode\t%ju",
- first_sector,
- BDEV_CACHE_MODE(&sb));
-
- switch (BDEV_CACHE_MODE(&sb)) {
- case CACHE_MODE_WRITETHROUGH:
- printf(" [writethrough]\n");
- break;
- case CACHE_MODE_WRITEBACK:
- printf(" [writeback]\n");
- break;
- case CACHE_MODE_WRITEAROUND:
- printf(" [writearound]\n");
- break;
- case CACHE_MODE_NONE:
- printf(" [no caching]\n");
- break;
- default:
- putchar('\n');
- }
- }
- putchar('\n');
-
- uuid_unparse(sb.set_uuid, uuid);
- printf("cset.uuid\t\t%s\n", uuid);