Allow zfs send to exclude datasets
Add support for a -exclude/-X option to `zfs send` to allow dataset hierarchies to be excluded. Snapshots can be excluded using a channel program; however, this can result in failures with 'zfs send -R'; this option allows them to be excluded. Fortunately, this required a change only to cmd/zfs/zfs_main.c, using the already-existing callback argument to zfs_send() that is currently unused. Reviewed-by: Paul Dagnelie <pcd@delphix.com> Reviewed-by: Christian Schwarz <christian.schwarz@nutanix.com> Reviewed-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Co-authored-by: Sean Eric Fagan <kithrup@mac.com> Signed-off-by: Sean Eric Fagan <kithrup@mac.com> Closes #13158
This commit is contained in:
Sean Eric Fagan
GitHub
parent
3ce3d30532
commit
565089f592
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@ -315,8 +315,9 @@ get_usage(zfs_help_t idx)
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case HELP_ROLLBACK:
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return (gettext("\trollback [-rRf] <snapshot>\n"));
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case HELP_SEND:
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return (gettext("\tsend [-DnPpRvLecwhb] [-[i|I] snapshot] "
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"<snapshot>\n"
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return (gettext("\tsend [-DnPpRvLecwhb] "
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"[-X dataset[,dataset]...] "
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"[-[i|I] snapshot] <snapshot>\n"
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"\tsend [-DnvPLecw] [-i snapshot|bookmark] "
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"<filesystem|volume|snapshot>\n"
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"\tsend [-DnPpvLec] [-i bookmark|snapshot] "
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@ -4317,6 +4318,77 @@ usage:
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return (-1);
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}
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typedef struct zfs_send_exclude_arg {
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size_t count;
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char **list;
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} zfs_send_exclude_arg_t;
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/*
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* This function creates the zfs_send_exclude_arg_t
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* object described above; it can be called multiple
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* times, and the input can be comma-separated.
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* This is NOT the most efficient data layout; however,
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* I couldn't think of a non-pathological case where
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* it should have more than a couple dozen instances
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* of excludes. If that turns out to be used in
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* practice, we might want to instead use a tree.
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*/
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static void
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add_dataset_excludes(char *exclude, zfs_send_exclude_arg_t *context)
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{
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char *tok;
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while ((tok = strsep(&exclude, ",")) != NULL) {
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if (!zfs_name_valid(tok, ZFS_TYPE_DATASET) ||
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strchr(tok, '/') == NULL) {
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(void) fprintf(stderr, gettext("-X %s: "
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"not a valid non-root dataset name.\n"), tok);
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usage(B_FALSE);
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}
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context->list = safe_realloc(context->list,
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(sizeof (char *)) * (context->count + 1));
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context->list[context->count++] = tok;
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}
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}
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static void
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free_dataset_excludes(zfs_send_exclude_arg_t *exclude_list)
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{
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free(exclude_list->list);
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}
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/*
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* This is the call back used by zfs_send to
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* determine if a dataset should be skipped.
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* As stated above, this is not the most efficient
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* data structure to use, but as long as the
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* number of excluded datasets is relatively
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* small (a couple of dozen or so), it won't
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* have a big impact on performance on modern
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* processors. Since it's excluding hierarchies,
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* we'd probably want to move to a more complex
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* tree structure in that case.
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*/
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static boolean_t
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zfs_do_send_exclude(zfs_handle_t *zhp, void *context)
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{
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zfs_send_exclude_arg_t *exclude = context;
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const char *name = zfs_get_name(zhp);
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for (size_t indx = 0; indx < exclude->count; indx++) {
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char *exclude_name = exclude->list[indx];
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size_t len = strlen(exclude_name);
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/* If it's shorter, it can't possibly match */
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if (strlen(name) < len)
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continue;
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if (strncmp(name, exclude_name, len) == 0 &&
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(name[len] == '/' || name[len] == '\0' ||
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name[len] == '@')) {
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return (B_FALSE);
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}
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}
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return (B_TRUE);
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}
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/*
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* Send a backup stream to stdout.
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@ -4333,6 +4405,7 @@ zfs_do_send(int argc, char **argv)
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int c, err;
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nvlist_t *dbgnv = NULL;
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char *redactbook = NULL;
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zfs_send_exclude_arg_t exclude_context = { 0 };
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struct option long_options[] = {
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{"replicate", no_argument, NULL, 'R'},
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@ -4351,13 +4424,17 @@ zfs_do_send(int argc, char **argv)
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{"backup", no_argument, NULL, 'b'},
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{"holds", no_argument, NULL, 'h'},
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{"saved", no_argument, NULL, 'S'},
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{"exclude", required_argument, NULL, 'X'},
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{0, 0, 0, 0}
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};
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/* check options */
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while ((c = getopt_long(argc, argv, ":i:I:RsDpvnPLeht:cwbd:S",
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while ((c = getopt_long(argc, argv, ":i:I:RsDpvnPLeht:cwbd:SX:",
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long_options, NULL)) != -1) {
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switch (c) {
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case 'X':
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add_dataset_excludes(optarg, &exclude_context);
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break;
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case 'i':
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if (fromname)
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usage(B_FALSE);
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@ -4467,6 +4544,13 @@ zfs_do_send(int argc, char **argv)
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if (flags.parsable && flags.verbosity == 0)
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flags.verbosity = 1;
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if (exclude_context.count > 0 && !flags.replicate) {
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(void) fprintf(stderr, gettext("Cannot specify "
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"dataset exclusion (-X) on a non-recursive "
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"send.\n"));
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return (1);
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}
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argc -= optind;
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argv += optind;
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@ -4648,8 +4732,11 @@ zfs_do_send(int argc, char **argv)
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if (flags.replicate && fromname == NULL)
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flags.doall = B_TRUE;
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err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO, NULL, 0,
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flags.verbosity >= 3 ? &dbgnv : NULL);
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err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO,
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exclude_context.count > 0 ? zfs_do_send_exclude : NULL,
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&exclude_context, flags.verbosity >= 3 ? &dbgnv : NULL);
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free_dataset_excludes(&exclude_context);
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if (flags.verbosity >= 3 && dbgnv != NULL) {
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/*
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@ -40,6 +40,7 @@
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.Nm zfs
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.Cm send
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.Op Fl DLPRbcehnpsvw
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.Op Fl X Ar dataset Ns Oo , Ns Ar dataset Oc Ns ...
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.Op Oo Fl I Ns | Ns Fl i Oc Ar snapshot
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.Ar snapshot
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.Nm zfs
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@ -73,6 +74,7 @@
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.Nm zfs
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.Cm send
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.Op Fl DLPRbcehnpvw
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.Op Fl X Ar dataset Ns Oo , Ns Ar dataset Oc Ns ...
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.Op Oo Fl I Ns | Ns Fl i Oc Ar snapshot
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.Ar snapshot
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.Xc
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@ -140,6 +142,23 @@ If the
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flag is used to send encrypted datasets, then
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.Fl w
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must also be specified.
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.It Fl X , -exclude Ar dataset Ns Oo , Ns Ar dataset Oc Ns ...
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When the
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.Fl R
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flag is given,
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.Fl X
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can be used to specify a list of datasets to be excluded from the
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data stream.
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The
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.Fl X
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option can be used multiple times, or the list of datasets can be
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specified as a comma-separated list, or both.
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.Ar dataset
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must not be the pool's root dataset, and all descendant datasets of
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.Ar dataset
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will be excluded from the send stream.
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Requires
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.Fl R .
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.It Fl e , -embed
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Generate a more compact stream by using
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.Sy WRITE_EMBEDDED
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@ -824,7 +824,8 @@ tests = ['recv_dedup', 'recv_dedup_encrypted_zvol', 'rsend_001_pos',
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'rsend_006_pos', 'rsend_007_pos', 'rsend_008_pos', 'rsend_009_pos',
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'rsend_010_pos', 'rsend_011_pos', 'rsend_012_pos', 'rsend_013_pos',
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'rsend_014_pos', 'rsend_016_neg', 'rsend_019_pos', 'rsend_020_pos',
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'rsend_021_pos', 'rsend_022_pos', 'rsend_024_pos',
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'rsend_021_pos', 'rsend_022_pos', 'rsend_024_pos', 'rsend_025_pos',
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'rsend_026_neg', 'rsend_027_pos', 'rsend_028_neg', 'rsend_029_neg',
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'send-c_verify_ratio', 'send-c_verify_contents', 'send-c_props',
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'send-c_incremental', 'send-c_volume', 'send-c_zstreamdump',
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'send-c_lz4_disabled', 'send-c_recv_lz4_disabled',
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@ -24,6 +24,11 @@ dist_pkgdata_SCRIPTS = \
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rsend_021_pos.ksh \
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rsend_022_pos.ksh \
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rsend_024_pos.ksh \
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rsend_025_pos.ksh \
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rsend_026_neg.ksh \
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rsend_027_pos.ksh \
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rsend_028_neg.ksh \
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rsend_029_neg.ksh \
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send_encrypted_files.ksh \
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send_encrypted_hierarchy.ksh \
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send_encrypted_props.ksh \
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@ -0,0 +1,90 @@
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#!/bin/ksh -p
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#
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# CDDL HEADER START
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#
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# The contents of this file are subject to the terms of the
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# Common Development and Distribution License (the "License").
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# You may not use this file except in compliance with the License.
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#
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# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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# or http://www.opensolaris.org/os/licensing.
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# See the License for the specific language governing permissions
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# and limitations under the License.
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#
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# When distributing Covered Code, include this CDDL HEADER in each
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# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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# If applicable, add the following below this CDDL HEADER, with the
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# fields enclosed by brackets "[]" replaced with your own identifying
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# information: Portions Copyright [yyyy] [name of copyright owner]
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#
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# CDDL HEADER END
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#
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#
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# Copyright 2009 Sun Microsystems, Inc. All rights reserved.
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# Use is subject to license terms.
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#
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#
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# Copyright (c) 2013, 2016 by Delphix. All rights reserved.
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#
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. $STF_SUITE/tests/functional/rsend/rsend.kshlib
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# DESCRIPTION:
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# zfs send -exclude will exclude the given hierarchy
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# and only that given hierarchy.
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#
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# STRATEGY:
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# 1. Setup test model
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# 2. Create several datasets on pool.
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# 3. Send -R -X pool/dataset
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# 4. Verify receive does not have the excluded dataset(s).
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verify_runnable "both"
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function cleanup
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{
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cleanup_pool $POOL2
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cleanup_pool $POOL
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log_must setup_test_model $POOL
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}
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log_assert "zfs send -R -X will skip excluded dataset(s)"
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log_onexit cleanup
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cleanup
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#
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# Create some datasets
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log_must zfs create -p $POOL/ds1/second/third
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log_must zfs create -p $POOL/ds2/second
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log_must zfs snapshot -r $POOL@presend
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log_must eval "zfs send -R $POOL@presend > $BACKDIR/presend"
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log_must eval "zfs receive -d -F $POOL2 < $BACKDIR/presend"
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for ds in ds1 ds1/second ds1/second/third \
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ds2 ds2/second
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do
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log_must datasetexists $POOL2/$ds
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done
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log_must_busy zfs destroy -r $POOL2
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log_must eval "zfs send -R -X $POOL/ds1/second $POOL@presend > $BACKDIR/presend"
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log_must eval "zfs receive -d -F $POOL2 < $BACKDIR/presend"
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for ds in ds1 ds2 ds2/second
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do
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log_must datasetexists $POOL2/$ds
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done
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for ds in ds1/second ds1/second/third
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do
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log_must datasetnonexists $POOL2/$ds
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done
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log_pass "zfs send -X excluded datasets"
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@ -0,0 +1,58 @@
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#!/bin/ksh -p
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#
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# CDDL HEADER START
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#
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# The contents of this file are subject to the terms of the
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# Common Development and Distribution License (the "License").
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# You may not use this file except in compliance with the License.
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#
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# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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# or http://www.opensolaris.org/os/licensing.
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# See the License for the specific language governing permissions
|
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# and limitations under the License.
|
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#
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# When distributing Covered Code, include this CDDL HEADER in each
|
||||
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
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# If applicable, add the following below this CDDL HEADER, with the
|
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# fields enclosed by brackets "[]" replaced with your own identifying
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# information: Portions Copyright [yyyy] [name of copyright owner]
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#
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# CDDL HEADER END
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#
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#
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# Copyright 2009 Sun Microsystems, Inc. All rights reserved.
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# Use is subject to license terms.
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#
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#
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# Copyright (c) 2013, 2016 by Delphix. All rights reserved.
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#
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. $STF_SUITE/include/libtest.shlib
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. $STF_SUITE/tests/functional/rsend/rsend.kshlib
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# DESCRIPTION:
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# zfs send -X without -R will fail.
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#
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# STRATEGY:
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# 1. Setup test model
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# 2. Run "zfs send -X random $POOL" and check for failure.
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verify_runnable "both"
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function cleanup
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{
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cleanup_pool $POOL2
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cleanup_pool $POOL
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log_must setup_test_model $POOL
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}
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log_assert "zfs send -X without -R will fail"
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log_onexit cleanup
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cleanup
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log_mustnot eval "zfs send -X $POOL/foobar $POOL@final"
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log_pass "Ensure that zfs send -X without -R will fail"
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@ -0,0 +1,92 @@
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#!/bin/ksh -p
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#
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# CDDL HEADER START
|
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#
|
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# The contents of this file are subject to the terms of the
|
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# Common Development and Distribution License (the "License").
|
||||
# You may not use this file except in compliance with the License.
|
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#
|
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# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
||||
# or http://www.opensolaris.org/os/licensing.
|
||||
# See the License for the specific language governing permissions
|
||||
# and limitations under the License.
|
||||
#
|
||||
# When distributing Covered Code, include this CDDL HEADER in each
|
||||
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
||||
# If applicable, add the following below this CDDL HEADER, with the
|
||||
# fields enclosed by brackets "[]" replaced with your own identifying
|
||||
# information: Portions Copyright [yyyy] [name of copyright owner]
|
||||
#
|
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# CDDL HEADER END
|
||||
#
|
||||
|
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#
|
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# Copyright 2009 Sun Microsystems, Inc. All rights reserved.
|
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# Use is subject to license terms.
|
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#
|
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|
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#
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# Copyright (c) 2013, 2016 by Delphix. All rights reserved.
|
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#
|
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|
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. $STF_SUITE/tests/functional/rsend/rsend.kshlib
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# DESCRIPTION:
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# zfs send with multiple -X/--exclude options will
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# exclude all of them.
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#
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# STRATEGY:
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# 1. Setup test model
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# 2. Create several datasets on pool.
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# 3. Send -R -X pool/dataset
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# 4. Verify receive does not have the excluded dataset(s).
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verify_runnable "both"
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function cleanup
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{
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cleanup_pool $POOL2
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cleanup_pool $POOL
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log_must setup_test_model $POOL
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}
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log_assert "zfs send with multiple -X options will skip excluded dataset"
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log_onexit cleanup
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cleanup
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#
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# Create some datasets
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log_must zfs create -p $POOL/ds1/second/third
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log_must zfs create -p $POOL/ds2/second
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log_must zfs create -p $POOL/ds3/first/second/third
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log_must zfs snapshot -r $POOL@presend
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log_must eval "zfs send -R $POOL@presend > $BACKDIR/presend"
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log_must eval "zfs receive -d -F $POOL2 < $BACKDIR/presend"
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for ds in ds1 ds1/second ds1/second/third \
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ds2 ds2/second \
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ds3 ds3/first ds3/first/second ds3/first/second/third
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do
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log_must datasetexists $POOL2/$ds
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done
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log_must_busy zfs destroy -r $POOL2
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log_must eval "zfs send -R -X $POOL/ds1/second --exclude $POOL/ds3/first/second $POOL@presend > $BACKDIR/presend"
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log_must eval "zfs receive -d -F $POOL2 < $BACKDIR/presend"
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|
||||
for ds in ds1 ds2 ds2/second ds3 ds3/first
|
||||
do
|
||||
log_must datasetexists $POOL2/$ds
|
||||
done
|
||||
|
||||
for ds in ds1/second ds1/second/third ds3/first/second ds3/first/second/third
|
||||
do
|
||||
log_must datasetnonexists $POOL2/$ds
|
||||
done
|
||||
|
||||
log_pass "zfs send with multiple -X options excluded datasets"
|
||||
|
||||
|
|
@ -0,0 +1,58 @@
|
|||
#!/bin/ksh -p
|
||||
#
|
||||
# CDDL HEADER START
|
||||
#
|
||||
# The contents of this file are subject to the terms of the
|
||||
# Common Development and Distribution License (the "License").
|
||||
# You may not use this file except in compliance with the License.
|
||||
#
|
||||
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
||||
# or http://www.opensolaris.org/os/licensing.
|
||||
# See the License for the specific language governing permissions
|
||||
# and limitations under the License.
|
||||
#
|
||||
# When distributing Covered Code, include this CDDL HEADER in each
|
||||
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
||||
# If applicable, add the following below this CDDL HEADER, with the
|
||||
# fields enclosed by brackets "[]" replaced with your own identifying
|
||||
# information: Portions Copyright [yyyy] [name of copyright owner]
|
||||
#
|
||||
# CDDL HEADER END
|
||||
#
|
||||
|
||||
#
|
||||
# Copyright 2009 Sun Microsystems, Inc. All rights reserved.
|
||||
# Use is subject to license terms.
|
||||
#
|
||||
|
||||
#
|
||||
# Copyright (c) 2013, 2016 by Delphix. All rights reserved.
|
||||
#
|
||||
|
||||
. $STF_SUITE/include/libtest.shlib
|
||||
. $STF_SUITE/tests/functional/rsend/rsend.kshlib
|
||||
|
||||
# DESCRIPTION:
|
||||
# zfs send -X with invalid dataset name will fail.
|
||||
#
|
||||
# STRATEGY:
|
||||
# 1. Setup test model
|
||||
# 2. Run "zfs send -X $POOL $POOL" and check for failure.
|
||||
|
||||
verify_runnable "both"
|
||||
|
||||
function cleanup
|
||||
{
|
||||
cleanup_pool $POOL2
|
||||
cleanup_pool $POOL
|
||||
log_must setup_test_model $POOL
|
||||
}
|
||||
|
||||
log_assert "zfs send -X $POOL will fail"
|
||||
log_onexit cleanup
|
||||
|
||||
cleanup
|
||||
|
||||
log_mustnot eval "zfs send -X $POOL $POOL@final"
|
||||
|
||||
log_pass "Ensure that zfs send -X $POOL will fail"
|
||||
|
|
@ -0,0 +1,58 @@
|
|||
#!/bin/ksh -p
|
||||
#
|
||||
# CDDL HEADER START
|
||||
#
|
||||
# The contents of this file are subject to the terms of the
|
||||
# Common Development and Distribution License (the "License").
|
||||
# You may not use this file except in compliance with the License.
|
||||
#
|
||||
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
||||
# or http://www.opensolaris.org/os/licensing.
|
||||
# See the License for the specific language governing permissions
|
||||
# and limitations under the License.
|
||||
#
|
||||
# When distributing Covered Code, include this CDDL HEADER in each
|
||||
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
||||
# If applicable, add the following below this CDDL HEADER, with the
|
||||
# fields enclosed by brackets "[]" replaced with your own identifying
|
||||
# information: Portions Copyright [yyyy] [name of copyright owner]
|
||||
#
|
||||
# CDDL HEADER END
|
||||
#
|
||||
|
||||
#
|
||||
# Copyright 2009 Sun Microsystems, Inc. All rights reserved.
|
||||
# Use is subject to license terms.
|
||||
#
|
||||
|
||||
#
|
||||
# Copyright (c) 2013, 2016 by Delphix. All rights reserved.
|
||||
#
|
||||
|
||||
. $STF_SUITE/include/libtest.shlib
|
||||
. $STF_SUITE/tests/functional/rsend/rsend.kshlib
|
||||
|
||||
# DESCRIPTION:
|
||||
# zfs send -X with invalid dataset name will fail.
|
||||
#
|
||||
# STRATEGY:
|
||||
# 1. Setup test model
|
||||
# 2. Run "zfs send -X $POOL/da%set $POOL" and check for failure.
|
||||
|
||||
verify_runnable "both"
|
||||
|
||||
function cleanup
|
||||
{
|
||||
cleanup_pool $POOL2
|
||||
cleanup_pool $POOL
|
||||
log_must setup_test_model $POOL
|
||||
}
|
||||
|
||||
log_assert "zfs send -X $POOL/da%set will fail"
|
||||
log_onexit cleanup
|
||||
|
||||
cleanup
|
||||
|
||||
log_mustnot eval "zfs send -X $POOL/da%set $POOL@final"
|
||||
|
||||
log_pass "Ensure that zfs send -X with invalid dataset name will fail"
|
||||
Loading…
Reference in New Issue