Author: mav
Date: Wed Oct 14 11:33:07 2015
New Revision: 289311
URL: https://svnweb.freebsd.org/changeset/base/289311

Log:
  5764 "zfs send -nv" directs output to stderr
  
  Reviewed by: Matthew Ahrens <[email protected]>
  Reviewed by: Paul Dagnelie <[email protected]>
  Reviewed by: Basil Crow <[email protected]>
  Reviewed by: Steven Hartland <[email protected]>
  Reviewed by: Bayard Bell <[email protected]>
  Approved by: Dan McDonald <[email protected]>
  Author: Manoj Joseph <[email protected]>
  
  illumos/illumos-gate@dc5f28a3c341db7c241bba77ddc109c141072f27

Modified:
  vendor/illumos/dist/lib/libzfs/common/libzfs_sendrecv.c
  vendor/illumos/dist/man/man1m/zfs.1m

Modified: vendor/illumos/dist/lib/libzfs/common/libzfs_sendrecv.c
==============================================================================
--- vendor/illumos/dist/lib/libzfs/common/libzfs_sendrecv.c     Wed Oct 14 
11:12:47 2015        (r289310)
+++ vendor/illumos/dist/lib/libzfs/common/libzfs_sendrecv.c     Wed Oct 14 
11:33:07 2015        (r289311)
@@ -809,7 +809,8 @@ typedef struct send_dump_data {
        char prevsnap[ZFS_MAXNAMELEN];
        uint64_t prevsnap_obj;
        boolean_t seenfrom, seento, replicate, doall, fromorigin;
-       boolean_t verbose, dryrun, parsable, progress, embed_data, large_block;
+       boolean_t verbose, dryrun, parsable, progress, embed_data, std_out;
+       boolean_t large_block;
        int outfd;
        boolean_t err;
        nvlist_t *fss;
@@ -1037,6 +1038,7 @@ dump_snapshot(zfs_handle_t *zhp, void *a
        int err;
        boolean_t isfromsnap, istosnap, fromorigin;
        boolean_t exclude = B_FALSE;
+       FILE *fout = sdd->std_out ? stdout : stderr;
 
        err = 0;
        thissnap = strchr(zhp->zfs_name, '@') + 1;
@@ -1111,30 +1113,30 @@ dump_snapshot(zfs_handle_t *zhp, void *a
 
                if (sdd->parsable) {
                        if (sdd->prevsnap[0] != '\0') {
-                               (void) fprintf(stderr, "incremental\t%s\t%s",
+                               (void) fprintf(fout, "incremental\t%s\t%s",
                                    sdd->prevsnap, zhp->zfs_name);
                        } else {
-                               (void) fprintf(stderr, "full\t%s",
+                               (void) fprintf(fout, "full\t%s",
                                    zhp->zfs_name);
                        }
                } else {
-                       (void) fprintf(stderr, dgettext(TEXT_DOMAIN,
+                       (void) fprintf(fout, dgettext(TEXT_DOMAIN,
                            "send from @%s to %s"),
                            sdd->prevsnap, zhp->zfs_name);
                }
                if (err == 0) {
                        if (sdd->parsable) {
-                               (void) fprintf(stderr, "\t%llu\n",
+                               (void) fprintf(fout, "\t%llu\n",
                                    (longlong_t)size);
                        } else {
                                char buf[16];
                                zfs_nicenum(size, buf, sizeof (buf));
-                               (void) fprintf(stderr, dgettext(TEXT_DOMAIN,
+                               (void) fprintf(fout, dgettext(TEXT_DOMAIN,
                                    " estimated size is %s\n"), buf);
                        }
                        sdd->size += size;
                } else {
-                       (void) fprintf(stderr, "\n");
+                       (void) fprintf(fout, "\n");
                }
        }
 
@@ -1378,6 +1380,7 @@ zfs_send(zfs_handle_t *zhp, const char *
        int pipefd[2];
        dedup_arg_t dda = { 0 };
        int featureflags = 0;
+       FILE *fout;
 
        (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
            "cannot send '%s'"), zhp->zfs_name);
@@ -1505,6 +1508,9 @@ zfs_send(zfs_handle_t *zhp, const char *
        sdd.filter_cb_arg = cb_arg;
        if (debugnvp)
                sdd.debugnv = *debugnvp;
+       if (sdd.verbose && sdd.dryrun)
+               sdd.std_out = B_TRUE;
+       fout = sdd.std_out ? stdout : stderr;
 
        /*
         * Some flags require that we place user holds on the datasets that are
@@ -1544,12 +1550,12 @@ zfs_send(zfs_handle_t *zhp, const char *
 
                if (flags->verbose) {
                        if (flags->parsable) {
-                               (void) fprintf(stderr, "size\t%llu\n",
+                               (void) fprintf(fout, "size\t%llu\n",
                                    (longlong_t)sdd.size);
                        } else {
                                char buf[16];
                                zfs_nicenum(sdd.size, buf, sizeof (buf));
-                               (void) fprintf(stderr, dgettext(TEXT_DOMAIN,
+                               (void) fprintf(fout, dgettext(TEXT_DOMAIN,
                                    "total estimated size is %s\n"), buf);
                        }
                }

Modified: vendor/illumos/dist/man/man1m/zfs.1m
==============================================================================
--- vendor/illumos/dist/man/man1m/zfs.1m        Wed Oct 14 11:12:47 2015        
(r289310)
+++ vendor/illumos/dist/man/man1m/zfs.1m        Wed Oct 14 11:33:07 2015        
(r289311)
@@ -3061,7 +3061,9 @@ Include the dataset's properties in the 
 .RS 4n
 Do a dry-run ("No-op") send.  Do not generate any actual send data.  This is
 useful in conjunction with the \fB-v\fR or \fB-P\fR flags to determine what
-data will be sent.
+data will be sent.  In this case, the verbose output will be written to
+standard output (contrast with a non-dry-run, where the stream is written
+to standard output and the verbose output goes to standard error).
 .RE
 
 .sp
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