Want 'zfs send -b'
This change implements 'zfs send -b' which can be used to send only received property values whether or not they are overridden by local settings. This can be very useful during "restore" operations from a backup pool because it allows to send only the property values originally sent from the backup source, even though they were later modified on the destination either by a 'zfs set' operation, explicit 'zfs inherit' or overridden during the receive process via 'zfs receive -o|-x'. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: loli10K <ezomori.nozomu@gmail.com> Closes #7156
This commit is contained in:
LOLi
Brian Behlendorf
parent
b0918402dc
commit
faa97c1619
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@ -288,9 +288,9 @@ 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 [-DnPpRvLecr] [-[i|I] snapshot] "
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return (gettext("\tsend [-DnPpRvLecwb] [-[i|I] snapshot] "
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"<snapshot>\n"
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"\tsend [-Lecr] [-i snapshot|bookmark] "
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"\tsend [-nvPLecw] [-i snapshot|bookmark] "
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"<filesystem|volume|snapshot>\n"
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"\tsend [-nvPe] -t <receive_resume_token>\n"));
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case HELP_SET:
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@ -3944,11 +3944,12 @@ zfs_do_send(int argc, char **argv)
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{"resume", required_argument, NULL, 't'},
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{"compressed", no_argument, NULL, 'c'},
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{"raw", no_argument, NULL, 'w'},
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{"backup", no_argument, NULL, 'b'},
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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:RDpvnPLet:cw", long_options,
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while ((c = getopt_long(argc, argv, ":i:I:RDpvnPLet:cwb", long_options,
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NULL)) != -1) {
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switch (c) {
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case 'i':
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@ -3968,6 +3969,9 @@ zfs_do_send(int argc, char **argv)
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case 'p':
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flags.props = B_TRUE;
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break;
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case 'b':
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flags.backup = B_TRUE;
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break;
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case 'P':
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flags.parsable = B_TRUE;
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flags.verbose = B_TRUE;
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@ -4048,7 +4052,7 @@ zfs_do_send(int argc, char **argv)
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if (resume_token != NULL) {
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if (fromname != NULL || flags.replicate || flags.props ||
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flags.dedup) {
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flags.backup || flags.dedup) {
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(void) fprintf(stderr,
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gettext("invalid flags combined with -t\n"));
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usage(B_FALSE);
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@ -4090,7 +4094,8 @@ zfs_do_send(int argc, char **argv)
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char frombuf[ZFS_MAX_DATASET_NAME_LEN];
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if (flags.replicate || flags.doall || flags.props ||
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flags.dedup || (strchr(argv[0], '@') == NULL &&
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flags.backup || flags.dedup ||
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(strchr(argv[0], '@') == NULL &&
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(flags.dryrun || flags.verbose || flags.progress))) {
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(void) fprintf(stderr, gettext("Error: "
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"Unsupported flag with filesystem or bookmark.\n"));
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@ -673,6 +673,9 @@ typedef struct sendflags {
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/* raw encrypted records are permitted */
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boolean_t raw;
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/* only send received properties (ie. -b) */
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boolean_t backup;
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} sendflags_t;
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typedef boolean_t (snapfilter_cb_t)(zfs_handle_t *, void *);
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@ -621,6 +621,7 @@ typedef struct send_data {
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const char *fromsnap;
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const char *tosnap;
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boolean_t raw;
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boolean_t backup;
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boolean_t recursive;
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boolean_t verbose;
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boolean_t seenfrom;
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@ -651,7 +652,8 @@ typedef struct send_data {
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*/
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} send_data_t;
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static void send_iterate_prop(zfs_handle_t *zhp, nvlist_t *nv);
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static void
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send_iterate_prop(zfs_handle_t *zhp, boolean_t received_only, nvlist_t *nv);
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static int
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send_iterate_snap(zfs_handle_t *zhp, void *arg)
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@ -706,7 +708,7 @@ send_iterate_snap(zfs_handle_t *zhp, void *arg)
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}
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VERIFY(0 == nvlist_alloc(&nv, NV_UNIQUE_NAME, 0));
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send_iterate_prop(zhp, nv);
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send_iterate_prop(zhp, sd->backup, nv);
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VERIFY(0 == nvlist_add_nvlist(sd->snapprops, snapname, nv));
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nvlist_free(nv);
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@ -715,11 +717,17 @@ send_iterate_snap(zfs_handle_t *zhp, void *arg)
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}
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static void
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send_iterate_prop(zfs_handle_t *zhp, nvlist_t *nv)
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send_iterate_prop(zfs_handle_t *zhp, boolean_t received_only, nvlist_t *nv)
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{
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nvlist_t *props = NULL;
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nvpair_t *elem = NULL;
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while ((elem = nvlist_next_nvpair(zhp->zfs_props, elem)) != NULL) {
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if (received_only)
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props = zfs_get_recvd_props(zhp);
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else
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props = zhp->zfs_props;
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while ((elem = nvlist_next_nvpair(props, elem)) != NULL) {
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char *propname = nvpair_name(elem);
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zfs_prop_t prop = zfs_name_to_prop(propname);
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nvlist_t *propnv;
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@ -885,7 +893,7 @@ send_iterate_fs(zfs_handle_t *zhp, void *arg)
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/* iterate over props */
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VERIFY(0 == nvlist_alloc(&nv, NV_UNIQUE_NAME, 0));
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send_iterate_prop(zhp, nv);
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send_iterate_prop(zhp, sd->backup, nv);
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if (zfs_prop_get_int(zhp, ZFS_PROP_ENCRYPTION) != ZIO_CRYPT_OFF) {
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boolean_t encroot;
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@ -951,7 +959,7 @@ out:
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static int
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gather_nvlist(libzfs_handle_t *hdl, const char *fsname, const char *fromsnap,
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const char *tosnap, boolean_t recursive, boolean_t raw, boolean_t verbose,
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nvlist_t **nvlp, avl_tree_t **avlp)
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boolean_t backup, nvlist_t **nvlp, avl_tree_t **avlp)
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{
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zfs_handle_t *zhp;
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send_data_t sd = { 0 };
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@ -968,6 +976,7 @@ gather_nvlist(libzfs_handle_t *hdl, const char *fsname, const char *fromsnap,
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sd.recursive = recursive;
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sd.raw = raw;
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sd.verbose = verbose;
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sd.backup = backup;
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if ((error = send_iterate_fs(zhp, &sd)) != 0) {
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nvlist_free(sd.fss);
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@ -1881,7 +1890,7 @@ zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap,
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}
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}
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if (flags->replicate || flags->doall || flags->props) {
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if (flags->replicate || flags->doall || flags->props || flags->backup) {
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dmu_replay_record_t drr = { 0 };
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char *packbuf = NULL;
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size_t buflen = 0;
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@ -1889,7 +1898,7 @@ zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap,
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ZIO_SET_CHECKSUM(&zc, 0, 0, 0, 0);
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if (flags->replicate || flags->props) {
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if (flags->replicate || flags->props || flags->backup) {
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nvlist_t *hdrnv;
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VERIFY(0 == nvlist_alloc(&hdrnv, NV_UNIQUE_NAME, 0));
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@ -1908,7 +1917,7 @@ zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap,
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err = gather_nvlist(zhp->zfs_hdl, zhp->zfs_name,
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fromsnap, tosnap, flags->replicate, flags->raw,
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flags->verbose, &fss, &fsavl);
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flags->verbose, flags->backup, &fss, &fsavl);
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if (err)
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goto err_out;
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VERIFY(0 == nvlist_add_nvlist(hdrnv, "fss", fss));
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@ -2078,7 +2087,7 @@ zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap,
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}
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if (!flags->dryrun && (flags->replicate || flags->doall ||
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flags->props)) {
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flags->props || flags->backup)) {
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/*
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* write final end record. NB: want to do this even if
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* there was some error, because it might not be totally
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@ -2816,7 +2825,7 @@ again:
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VERIFY(0 == nvlist_alloc(&deleted, NV_UNIQUE_NAME, 0));
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if ((error = gather_nvlist(hdl, tofs, fromsnap, NULL,
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recursive, B_TRUE, B_FALSE, &local_nv, &local_avl)) != 0)
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recursive, B_TRUE, B_FALSE, B_FALSE, &local_nv, &local_avl)) != 0)
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return (error);
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/*
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@ -4121,7 +4130,7 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
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*/
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*cp = '\0';
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if (gather_nvlist(hdl, destsnap, NULL, NULL, B_FALSE, B_TRUE,
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B_FALSE, &local_nv, &local_avl) == 0) {
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B_FALSE, B_FALSE, &local_nv, &local_avl) == 0) {
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*cp = '@';
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fs = fsavl_find(local_avl, drrb->drr_toguid, NULL);
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fsavl_destroy(local_avl);
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@ -194,7 +194,7 @@
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.Ar snapshot bookmark
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.Nm
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.Cm send
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.Op Fl DLPRcenpvw
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.Op Fl DLPRbcenpvw
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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
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@ -3321,7 +3321,7 @@ feature.
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.It Xo
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.Nm
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.Cm send
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.Op Fl DLPRcenpvw
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.Op Fl DLPRbcenpvw
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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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@ -3417,6 +3417,14 @@ See
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for details on ZFS feature flags and the
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.Sy embedded_data
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feature.
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.It Fl b, -backup
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Sends only received property values whether or not they are overridden by local
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settings, but only if the dataset has ever been received. Use this option when
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you want
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.Nm zfs Cm receive
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to restore received properties backed up on the sent dataset and to avoid
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sending local settings that may have nothing to do with the source dataset,
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but only with how the data is backed up.
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.It Fl c, -compressed
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Generate a more compact stream by using compressed WRITE records for blocks
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which are compressed on disk and in memory
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@ -223,7 +223,7 @@ tags = ['functional', 'cli_root', 'zfs_rollback']
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tests = ['zfs_send_001_pos', 'zfs_send_002_pos', 'zfs_send_003_pos',
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'zfs_send_004_neg', 'zfs_send_005_pos', 'zfs_send_006_pos',
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'zfs_send_007_pos', 'zfs_send_encrypted', 'zfs_send_raw',
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'zfs_send_sparse']
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'zfs_send_sparse', 'zfs_send-b']
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tags = ['functional', 'cli_root', 'zfs_send']
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[tests/functional/cli_root/zfs_set]
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@ -45,105 +45,6 @@ function cleanup
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log_must zfs destroy -r -f $dest
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}
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#
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# Verify property $2 is set from source $4 on dataset $1 and has value $3.
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#
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# $1 checked dataset
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# $2 user property
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# $3 property value
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# $4 source
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#
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function check_prop_source
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{
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typeset dataset="$1"
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typeset prop="$2"
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typeset value="$3"
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typeset source="$4"
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typeset chk_value=$(get_prop "$prop" "$dataset")
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typeset chk_source=$(get_source "$prop" "$dataset")
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if [[ "$chk_value" != "$value" || "$chk_source" != "$4" ]]
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then
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return 1
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else
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return 0
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fi
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}
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#
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# Verify target dataset $1 inherit property $2 from dataset $3.
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#
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# $1 checked dataset
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# $2 property
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# $3 inherited dataset
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#
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function check_prop_inherit
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{
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typeset checked_dtst="$1"
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typeset prop="$2"
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typeset inherited_dtst="$3"
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typeset inherited_value=$(get_prop "$prop" "$inherited_dtst")
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typeset value=$(get_prop "$prop" "$checked_dtst")
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typeset source=$(get_source "$prop" "$checked_dtst")
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if [[ "$value" != "$inherited_value" || \
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"$source" != "inherited from $inherited_dtst" ]]
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then
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return 1
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else
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return 0
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fi
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}
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#
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# Verify property $2 received value on dataset $1 has value $3
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#
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# $1 checked dataset
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# $2 property name
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# $3 checked value
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#
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function check_prop_received
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{
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typeset dataset="$1"
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typeset prop="$2"
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typeset value="$3"
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received=$(zfs get -H -o received "$prop" "$dataset")
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if (($? != 0)); then
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log_fail "Unable to get $prop received value for dataset " \
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"$dataset"
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fi
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if [[ "$received" == "$value" ]]
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then
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return 0
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else
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return 1
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fi
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}
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#
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# Verify user property $2 is not set on dataset $1
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#
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# $1 checked dataset
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# $2 property name
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#
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function check_prop_missing
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{
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typeset dataset="$1"
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typeset prop="$2"
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value=$(zfs get -H -o value "$prop" "$dataset")
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if (($? != 0)); then
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log_fail "Unable to get $prop value for dataset $dataset"
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fi
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if [[ "-" == "$value" ]]
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then
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return 0
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else
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return 1
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fi
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}
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log_assert "ZFS receive property override and exclude options work as expected."
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log_onexit cleanup
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@ -12,4 +12,5 @@ dist_pkgdata_SCRIPTS = \
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zfs_send_007_pos.ksh \
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zfs_send_encrypted.ksh \
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zfs_send_raw.ksh \
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zfs_send_sparse.ksh
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zfs_send_sparse.ksh \
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zfs_send-b.ksh
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@ -0,0 +1,103 @@
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#!/bin/ksh -p
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#
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# This file and its contents are supplied under the terms of the
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# Common Development and Distribution License ("CDDL"), version 1.0.
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# You may only use this file in accordance with the terms of version
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# 1.0 of the CDDL.
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#
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# A full copy of the text of the CDDL should have accompanied this
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# source. A copy of the CDDL is also available via the Internet at
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# http://www.illumos.org/license/CDDL.
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#
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#
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# Copyright 2018, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
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#
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. $STF_SUITE/include/libtest.shlib
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. $STF_SUITE/tests/functional/cli_root/zfs_set/zfs_set_common.kshlib
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#
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# DESCRIPTION:
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# 'zfs send -b' should works as expected.
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#
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# STRATEGY:
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# 1. Create a source dataset and set some properties
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# 2. Verify command line options interact with '-b' correctly
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# 3. Send the dataset and its properties to a new "backup" destination
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# 4. Set some properties on the new "backup" dataset
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# 5. Restore the "backup" dataset to a new destination
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# 6. Verify only original (received) properties are sent from "backup"
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#
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verify_runnable "both"
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function cleanup
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{
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for ds in "$SENDFS" "$BACKUP" "$RESTORE"; do
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datasetexists $ds && log_must zfs destroy -r $ds
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done
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}
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log_assert "'zfs send -b' should work as expected."
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log_onexit cleanup
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SENDFS="$TESTPOOL/sendfs"
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BACKUP="$TESTPOOL/backup"
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RESTORE="$TESTPOOL/restore"
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# 1. Create a source dataset and set some properties
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log_must zfs create $SENDFS
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log_must zfs snapshot "$SENDFS@s1"
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log_must zfs bookmark "$SENDFS@s1" "$SENDFS#bm"
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log_must zfs snapshot "$SENDFS@s2"
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log_must zfs set "compression=gzip" $SENDFS
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log_must zfs set "org.zfsonlinux:prop=val" $SENDFS
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log_must zfs set "org.zfsonlinux:snapprop=val" "$SENDFS@s1"
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# 2. Verify command line options interact with '-b' correctly
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typeset opts=("" "p" "Rp" "cew" "nv" "D" "DLPRcenpvw")
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for opt in ${opts[@]}; do
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log_must eval "zfs send -b$opt $SENDFS@s1 > /dev/null"
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log_must eval "zfs send -b$opt -i $SENDFS@s1 $SENDFS@s2 > /dev/null"
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log_must eval "zfs send -b$opt -I $SENDFS@s1 $SENDFS@s2 > /dev/null"
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done
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for opt in ${opts[@]}; do
|
||||
log_mustnot eval "zfs send -b$opt $SENDFS > /dev/null"
|
||||
log_mustnot eval "zfs send -b$opt $SENDFS#bm > /dev/null"
|
||||
log_mustnot eval "zfs send -b$opt -i $SENDFS#bm $SENDFS@s2 > /dev/null"
|
||||
done
|
||||
|
||||
# Do 3..6 in a loop to verify various combination of "zfs send" options
|
||||
typeset opts=("" "p" "R" "pR" "cew")
|
||||
for opt in ${opts[@]}; do
|
||||
# 3. Send the dataset and its properties to a new "backup" destination
|
||||
# NOTE: only need to send properties (-p) here
|
||||
log_must eval "zfs send -p $SENDFS@s1 | zfs recv $BACKUP"
|
||||
|
||||
# 4. Set some properties on the new "backup" dataset
|
||||
# NOTE: override "received" values and set some new properties as well
|
||||
log_must zfs set "compression=lz4" $BACKUP
|
||||
log_must zfs set "exec=off" $BACKUP
|
||||
log_must zfs set "org.zfsonlinux:prop=newval" $BACKUP
|
||||
log_must zfs set "org.zfsonlinux:newprop=newval" $BACKUP
|
||||
log_must zfs set "org.zfsonlinux:snapprop=newval" "$BACKUP@s1"
|
||||
log_must zfs set "org.zfsonlinux:newsnapprop=newval" "$BACKUP@s1"
|
||||
|
||||
# 5. Restore the "backup" dataset to a new destination
|
||||
log_must eval "zfs send -b$opt $BACKUP@s1 | zfs recv $RESTORE"
|
||||
|
||||
# 6. Verify only original (received) properties are sent from "backup"
|
||||
log_must eval "check_prop_source $RESTORE compression gzip received"
|
||||
log_must eval "check_prop_source $RESTORE org.zfsonlinux:prop val received"
|
||||
log_must eval "check_prop_source $RESTORE@s1 org.zfsonlinux:snapprop val received"
|
||||
log_must eval "check_prop_source $RESTORE exec on default"
|
||||
log_must eval "check_prop_missing $RESTORE org.zfsonlinux:newprop"
|
||||
log_must eval "check_prop_missing $RESTORE@s1 org.zfsonlinux:newsnapprop"
|
||||
|
||||
# cleanup
|
||||
log_must zfs destroy -r $BACKUP
|
||||
log_must zfs destroy -r $RESTORE
|
||||
done
|
||||
|
||||
log_pass "'zfs send -b' works as expected."
|
||||
|
|
@ -267,3 +267,110 @@ function get_source
|
|||
|
||||
echo "$source"
|
||||
}
|
||||
|
||||
#
|
||||
# Verify property $2 is set from source $4 on dataset $1 and has value $3.
|
||||
#
|
||||
# $1 checked dataset
|
||||
# $2 user property
|
||||
# $3 property value
|
||||
# $4 source
|
||||
#
|
||||
# Returns: 0 if both expected source and value match, 1 otherwise
|
||||
#
|
||||
function check_prop_source
|
||||
{
|
||||
typeset dataset="$1"
|
||||
typeset prop="$2"
|
||||
typeset value="$3"
|
||||
typeset source="$4"
|
||||
typeset chk_value=$(get_prop "$prop" "$dataset")
|
||||
typeset chk_source=$(get_source "$prop" "$dataset")
|
||||
|
||||
if [[ "$chk_value" != "$value" || "$chk_source" != "$4" ]]
|
||||
then
|
||||
return 1
|
||||
else
|
||||
return 0
|
||||
fi
|
||||
}
|
||||
|
||||
#
|
||||
# Verify target dataset $1 inherit property $2 from dataset $3.
|
||||
#
|
||||
# $1 checked dataset
|
||||
# $2 property
|
||||
# $3 inherited dataset
|
||||
#
|
||||
# Returns: 0 if property has expected value and is inherited, 1 otherwise
|
||||
#
|
||||
function check_prop_inherit
|
||||
{
|
||||
typeset checked_dtst="$1"
|
||||
typeset prop="$2"
|
||||
typeset inherited_dtst="$3"
|
||||
typeset inherited_value=$(get_prop "$prop" "$inherited_dtst")
|
||||
typeset value=$(get_prop "$prop" "$checked_dtst")
|
||||
typeset source=$(get_source "$prop" "$checked_dtst")
|
||||
|
||||
if [[ "$value" != "$inherited_value" || \
|
||||
"$source" != "inherited from $inherited_dtst" ]]
|
||||
then
|
||||
return 1
|
||||
else
|
||||
return 0
|
||||
fi
|
||||
}
|
||||
|
||||
#
|
||||
# Verify property $2 received value on dataset $1 has value $3
|
||||
#
|
||||
# $1 checked dataset
|
||||
# $2 property name
|
||||
# $3 checked value
|
||||
#
|
||||
# Returns: 0 if property has expected value and is received, 1 otherwise
|
||||
#
|
||||
function check_prop_received
|
||||
{
|
||||
typeset dataset="$1"
|
||||
typeset prop="$2"
|
||||
typeset value="$3"
|
||||
|
||||
received=$(zfs get -H -o received "$prop" "$dataset")
|
||||
if (($? != 0)); then
|
||||
log_fail "Unable to get $prop received value for dataset " \
|
||||
"$dataset"
|
||||
fi
|
||||
if [[ "$received" == "$value" ]]
|
||||
then
|
||||
return 0
|
||||
else
|
||||
return 1
|
||||
fi
|
||||
}
|
||||
|
||||
#
|
||||
# Verify user property $2 is not set on dataset $1
|
||||
#
|
||||
# $1 checked dataset
|
||||
# $2 property name
|
||||
#
|
||||
# Returns: 0 if property is missing (not set), 1 otherwise
|
||||
#
|
||||
function check_prop_missing
|
||||
{
|
||||
typeset dataset="$1"
|
||||
typeset prop="$2"
|
||||
|
||||
value=$(zfs get -H -o value "$prop" "$dataset")
|
||||
if (($? != 0)); then
|
||||
log_fail "Unable to get $prop value for dataset $dataset"
|
||||
fi
|
||||
if [[ "-" == "$value" ]]
|
||||
then
|
||||
return 0
|
||||
else
|
||||
return 1
|
||||
fi
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue