DM_USE_FS
if (strcmp(by, DM_USE_FS) == 0 ||
if (strcmp(by, DM_USE_FS) == 0 ||
} else if (strcmp(what, DM_USE_FS) == 0) {
strcmp(by, DM_USE_FS) == 0 ||
strcmp(by, DM_USE_FS) == 0 ||
strcmp(by, DM_USE_FS) == 0 ||
libdiskmgt_add_str(attrs, DM_USED_BY, DM_USE_FS, errp);