- /*
- * if current \a dname isn't under the same \a mntdir as the
- * last one, and the last one was auto-distributed, restore
- * \a param.
- */
- if (mntdir[0] != '\0' &&
- strncmp(dname, mntdir, strlen(mntdir)) &&
- auto_distributed) {
- param->lsp_is_specific = false;
- param->lsp_stripe_offset = -1;
- auto_distributed = false;
- }
-
- /*
- * TODO: when MDT can allocate object with QoS (LU-9435), below
- * code should be removed, instead we should let LMV to allocate
- * the starting MDT object, and then let LOD allocate other MDT
- * objects.
- */
- if (!param->lsp_is_specific && param->lsp_stripe_offset == -1) {
- char path[PATH_MAX] = "";
-
- if (!lsb) {
- lsb = malloc(sizeof(*lsb));
- if (!lsb) {
- result = -ENOMEM;
- break;
- }
- }
- lsb->sb_count = 0;
-
- /* use mntdir for dirname() temporarily */
- strncpy(mntdir, dname, sizeof(mntdir) - 1);
- if (!realpath(dirname(mntdir), path)) {
- result = -errno;
- fprintf(stderr,
- "error: invalid path '%s': %s\n",
- argv[optind], strerror(errno));
- break;
- }
- mntdir[0] = '\0';
-
- result = llapi_search_mounts(path, 0, mntdir, NULL);
- if (result < 0 || mntdir[0] == '\0') {
- fprintf(stderr,
- "No suitable Lustre mount found\n");
- break;
- }
-
- result = mntdf(mntdir, NULL, NULL, 0, LL_STATFS_LMV,
- lsb);
- if (result < 0)
- break;
-
- if (param->lsp_stripe_count > lsb->sb_count) {
- fprintf(stderr,
- "error: stripe count %d is too big\n",
- param->lsp_stripe_count);
- result = -ERANGE;
- break;
- }
-
- qsort(lsb->sb_buf, lsb->sb_count,
- sizeof(struct ll_statfs_data),
- ll_statfs_data_comp);
-
- auto_distributed = true;
- }
-
- if (auto_distributed) {
- int r;
- int nr = MAX(param->lsp_stripe_count,
- lsb->sb_count / 2);
-
- /* don't use server whose usage is above 90% */
- while (nr != param->lsp_stripe_count &&
- obd_statfs_ratio(&lsb->sb_buf[nr].sd_st, false) >
- 90)
- nr = MAX(param->lsp_stripe_count, nr / 2);
-
- /* get \a r between [0, nr) */
- r = rand() % nr;
-
- param->lsp_stripe_offset = lsb->sb_buf[r].sd_index;
- if (param->lsp_stripe_count > 1) {
- int i = 0;
-
- param->lsp_is_specific = true;
- for (; i < param->lsp_stripe_count; i++)
- param->lsp_tgts[(i + r) % nr] =
- lsb->sb_buf[i].sd_index;
- }
- }
-