static int zfs_do_promote(int argc, char **argv);
static int zfs_do_userspace(int argc, char **argv);
static int zfs_do_python(int argc, char **argv);
+static int zfs_do_hold(int argc, char **argv);
+static int zfs_do_release(int argc, char **argv);
/*
* Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
HELP_ALLOW,
HELP_UNALLOW,
HELP_USERSPACE,
- HELP_GROUPSPACE
+ HELP_GROUPSPACE,
+ HELP_HOLD,
+ HELP_HOLDS,
+ HELP_RELEASE
} zfs_help_t;
typedef struct zfs_command {
{ "allow", zfs_do_python, HELP_ALLOW },
{ NULL },
{ "unallow", zfs_do_python, HELP_UNALLOW },
+ { NULL },
+ { "hold", zfs_do_hold, HELP_HOLD },
+ { "holds", zfs_do_python, HELP_HOLDS },
+ { "release", zfs_do_release, HELP_RELEASE },
};
#define NCOMMAND (sizeof (command_table) / sizeof (command_table[0]))
"-V <size> <volume>\n"));
case HELP_DESTROY:
return (gettext("\tdestroy [-rRf] "
- "<filesystem|volume|snapshot>\n"));
+ "<filesystem|volume|snapshot>\n"
+ "\tdestroy -d [-r] <filesystem|volume|snapshot>\n"));
case HELP_GET:
return (gettext("\tget [-rHp] [-d max] "
"[-o field[,...]] [-s source[,...]]\n"
return (gettext("\tunmount [-f] "
"<-a | filesystem|mountpoint>\n"));
case HELP_UNSHARE:
- return (gettext("\tunshare [-f] "
+ return (gettext("\tunshare "
"<-a | filesystem|mountpoint>\n"));
case HELP_ALLOW:
return (gettext("\tallow <filesystem|volume>\n"
return (gettext("\tgroupspace [-hniHpU] [-o field[,...]] "
"[-sS field] ... [-t type[,...]]\n"
"\t <filesystem|snapshot>\n"));
+ case HELP_HOLD:
+ return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
+ case HELP_HOLDS:
+ return (gettext("\tholds [-r] <snapshot> ...\n"));
+ case HELP_RELEASE:
+ return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
}
abort();
}
/*
- * zfs destroy [-rf] <fs, snap, vol>
+ * zfs destroy [-rRf] <fs, snap, vol>
+ * zfs destroy -d [-r] <fs, snap, vol>
*
* -r Recursively destroy all children
* -R Recursively destroy all dependents, including clones
* -f Force unmounting of any dependents
+ * -d If we can't destroy now, mark for deferred destruction
*
* Destroys the given dataset. By default, it will unmount any filesystems,
* and refuse to destroy a dataset that has any dependents. A dependent can
boolean_t cb_closezhp;
zfs_handle_t *cb_target;
char *cb_snapname;
+ boolean_t cb_defer_destroy;
} destroy_cbdata_t;
/*
* Bail out on the first error.
*/
if (zfs_unmount(zhp, NULL, cbp->cb_force ? MS_FORCE : 0) != 0 ||
- zfs_destroy(zhp) != 0) {
+ zfs_destroy(zhp, cbp->cb_defer_destroy) != 0) {
zfs_close(zhp);
return (-1);
}
char *cp;
/* check options */
- while ((c = getopt(argc, argv, "frR")) != -1) {
+ while ((c = getopt(argc, argv, "dfrR")) != -1) {
switch (c) {
+ case 'd':
+ cb.cb_defer_destroy = B_TRUE;
+ break;
case 'f':
cb.cb_force = 1;
break;
usage(B_FALSE);
}
+ if (cb.cb_defer_destroy && cb.cb_doclones)
+ usage(B_FALSE);
+
/*
* If we are doing recursive destroy of a snapshot, then the
* named snapshot may not exist. Go straight to libzfs.
}
}
- ret = zfs_destroy_snaps(zhp, cp);
+ ret = zfs_destroy_snaps(zhp, cp, cb.cb_defer_destroy);
zfs_close(zhp);
if (ret) {
(void) fprintf(stderr,
return (ret != 0);
}
-
/* Open the given dataset */
if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
return (1);
* Check for any dependents and/or clones.
*/
cb.cb_first = B_TRUE;
- if (!cb.cb_doclones &&
+ if (!cb.cb_doclones && !cb.cb_defer_destroy &&
zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
&cb) != 0) {
zfs_close(zhp);
return (1);
}
- if (cb.cb_error ||
- zfs_iter_dependents(zhp, B_FALSE, destroy_callback, &cb) != 0) {
+ if (cb.cb_error || (!cb.cb_defer_destroy &&
+ (zfs_iter_dependents(zhp, B_FALSE, destroy_callback, &cb) != 0))) {
zfs_close(zhp);
return (1);
}
if (destroy_callback(zhp, &cb) != 0)
return (1);
-
return (0);
}
(void) printf(gettext(" 1 Initial ZFS filesystem version\n"));
(void) printf(gettext(" 2 Enhanced directory entries\n"));
(void) printf(gettext(" 3 Case insensitive and File system "
- "unique identifer (FUID)\n"));
+ "unique identifier (FUID)\n"));
(void) printf(gettext(" 4 userquota, groupquota "
"properties\n"));
(void) printf(gettext("\nFor more information on a particular "
return (err != 0);
}
+static int
+zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
+{
+ int errors = 0;
+ int i;
+ const char *tag;
+ boolean_t recursive = B_FALSE;
+ int c;
+ int (*func)(zfs_handle_t *, const char *, const char *, boolean_t);
+
+ /* check options */
+ while ((c = getopt(argc, argv, "r")) != -1) {
+ switch (c) {
+ case 'r':
+ recursive = B_TRUE;
+ break;
+ case '?':
+ (void) fprintf(stderr, gettext("invalid option '%c'\n"),
+ optopt);
+ usage(B_FALSE);
+ }
+ }
+
+ argc -= optind;
+ argv += optind;
+
+ /* check number of arguments */
+ if (argc < 2)
+ usage(B_FALSE);
+
+ tag = argv[0];
+ --argc;
+ ++argv;
+
+ if (holding) {
+ if (tag[0] == '.') {
+ /* tags starting with '.' are reserved for libzfs */
+ (void) fprintf(stderr,
+ gettext("tag may not start with '.'\n"));
+ usage(B_FALSE);
+ }
+ func = zfs_hold;
+ } else {
+ func = zfs_release;
+ }
+
+ for (i = 0; i < argc; ++i) {
+ zfs_handle_t *zhp;
+ char parent[ZFS_MAXNAMELEN];
+ const char *delim;
+ char *path = argv[i];
+
+ delim = strchr(path, '@');
+ if (delim == NULL) {
+ (void) fprintf(stderr,
+ gettext("'%s' is not a snapshot\n"), path);
+ ++errors;
+ continue;
+ }
+ (void) strncpy(parent, path, delim - path);
+ parent[delim - path] = '\0';
+
+ zhp = zfs_open(g_zfs, parent,
+ ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
+ if (zhp == NULL) {
+ ++errors;
+ continue;
+ }
+ if (func(zhp, delim+1, tag, recursive) != 0)
+ ++errors;
+ zfs_close(zhp);
+ }
+
+ return (errors != 0);
+}
+
+/*
+ * zfs hold [-r] <tag> <snap> ...
+ *
+ * -r Recursively hold
+ *
+ * Apply a user-hold with the given tag to the list of snapshots.
+ */
+static int
+zfs_do_hold(int argc, char **argv)
+{
+ return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
+}
+
+/*
+ * zfs release [-r] <tag> <snap> ...
+ *
+ * -r Recursively release
+ *
+ * Release a user-hold with the given tag from the list of snapshots.
+ */
+static int
+zfs_do_release(int argc, char **argv)
+{
+ return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
+}
+
typedef struct get_all_cbdata {
zfs_handle_t **cb_handles;
size_t cb_alloc;
git://git.camperquake.de / zfs.git / blobdiff