-/* This code belongs under show_fs */
-#if 0
-
-struct bcache_dev {
- unsigned nr;
- const char *name;
-
- unsigned has_metadata;
- unsigned has_data;
- const char *state;
- unsigned tier;
-
- u64 bucket_size;
- u64 first_bucket;
- u64 nbuckets;
-
- /* XXX: dirty != used, it doesn't count metadata */
- u64 bytes_dirty;
-};
-
-static struct bcache_dev fill_dev(const char *dev_name, unsigned nr, int dir)
-{
- return (struct bcache_dev) {
- .nr = nr,
- .name = dev_name,
-
- .has_metadata = read_file_u64(dir, "has_metadata"),
- .has_data = read_file_u64(dir, "has_data"),
- .state = read_file_str(dir, "state"),
- .tier = read_file_u64(dir, "tier"),
-
- .bucket_size = read_file_u64(dir, "bucket_size_bytes"),
- .first_bucket = read_file_u64(dir, "first_bucket"),
- .nbuckets = read_file_u64(dir, "nbuckets"),
- .bytes_dirty = read_file_u64(dir, "dirty_bytes"),
- };
-}
-
-static void show_dev(struct bcache_dev *dev)
-{
- u64 capacity = (dev->nbuckets - dev->first_bucket) *
- dev->bucket_size;
- /*
- * XXX: show fragmentation information, cached/dirty information
- */
-
- printf("Device %u (/dev/%s):\n"
- " Has metadata:\t%u\n"
- " Has dirty data:\t%u\n"
- " State:\t\t%s\n"
- " Tier:\t\t%u\n"
- " Size:\t\t%llu\n"
- " Used:\t\t%llu\n"
- " Free:\t\t%llu\n"
- " Use%%:\t\t%llu\n",
- dev->nr, dev->name,
- dev->has_metadata,
- dev->has_data,
- dev->state,
- dev->tier,
- capacity,
- dev->bytes_dirty,
- capacity - dev->bytes_dirty,
- (dev->bytes_dirty * 100) / capacity);
-}
-
-int cmd_device_show(int argc, char *argv[])
-{
- int human_readable = 0;
- NihOption opts[] = {
- // { int shortoption, char *longoption, char *help, NihOptionGroup, char *argname, void *value, NihOptionSetter}
-
- { 'h', "human-readable", N_("print sizes in powers of 1024 (e.g., 1023M)"),
- NULL, NULL, &human_readable, NULL},
- NIH_OPTION_LAST
- };
- char **args = bch_nih_init(argc, argv, opts);
-
- if (argc != 2)
- die("Please supply a single device");
-
- struct bchfs_handle fs = bcache_fs_open(argv[1]);
- struct dirent *entry;
-
- struct bcache_dev devices[256];
- unsigned i, j, nr_devices = 0, nr_active_tiers = 0;
-
- unsigned tiers[BCH_TIER_MAX]; /* number of devices in each tier */
- memset(tiers, 0, sizeof(tiers));
-
- while ((entry = readdir(fs.sysfs))) {
- unsigned nr;
- int pos = 0;
-
- sscanf(entry->d_name, "cache%u%n", &nr, &pos);
- if (pos != strlen(entry->d_name))
- continue;
-
- char link[PATH_MAX];
- if (readlinkat(dirfd(fs.sysfs), entry->d_name,
- link, sizeof(link)) < 0)
- die("readlink error: %m\n");
-
- char *dev_name = basename(dirname(link));
-
- int fd = xopenat(dirfd(fs.sysfs), entry->d_name, O_RDONLY);
-
- devices[nr_devices] = fill_dev(strdup(dev_name), nr, fd);
- tiers[devices[nr_devices].tier]++;
- nr_devices++;
-
- close(fd);
- }
-
- for (i = 0; i < BCH_TIER_MAX; i++)
- if (tiers[i])
- nr_active_tiers++;
-
- /* Print out devices sorted by tier: */
- bool first = true;
-
- for (i = 0; i < BCH_TIER_MAX; i++) {
- if (!tiers[i])
- continue;
-
- if (nr_active_tiers > 1) {
- if (!first)
- printf("\n");
- first = false;
- printf("Tier %u:\n\n", i);
- }
-
- for (j = 0; j < nr_devices; j++) {
- if (devices[j].tier != i)
- continue;
-
- if (!first)
- printf("\n");
- first = false;
- show_dev(&devices[j]);
- }
- }
-
- return 0;
-}
-#endif
-
-static void disk_ioctl(const char *fs, const char *dev, int cmd, int flags)
-{
- struct bch_ioctl_disk i = { .flags = flags, };
-
- if (!kstrtoull(dev, 10, &i.dev))
- i.flags |= BCH_BY_INDEX;
- else
- i.dev = (u64) dev;
-
- xioctl(bcache_fs_open(fs).ioctl_fd, cmd, &i);
-}
-