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Illumos 5764 - "zfs send -nv" directs output to stderr

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5764 "zfs send -nv" directs output to stderr
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Paul Dagnelie <paul.dagnelie@delphix.com>
Reviewed by: Basil Crow <basil.crow@delphix.com>
Reviewed by: Steven Hartland <killing@multiplay.co.uk>
Reviewed by: Bayard Bell <buffer.g.overflow@gmail.com>
Approved by: Dan McDonald <danmcd@omniti.com>

References:
  https://github.com/illumos/illumos-gate/commit/dc5f28a
  https://www.illumos.org/issues/5764

Ported-by: kernelOfTruth kerneloftruth@gmail.com
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #3585
This commit is contained in:
Manoj Joseph 2015-07-11 01:54:52 +02:00 committed by Brian Behlendorf
parent 1cddb8c9ff
commit 93f6d7e2e5
2 changed files with 18 additions and 10 deletions
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24
lib/libzfs/libzfs_sendrecv.c
View File

@ -834,7 +834,8 @@ 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;
@ -1062,6 +1063,7 @@ dump_snapshot(zfs_handle_t *zhp, void *arg)
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;
@ -1136,30 +1138,30 @@ dump_snapshot(zfs_handle_t *zhp, void *arg)
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");
}
}
@ -1403,6 +1405,7 @@ zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap,
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);
@ -1537,6 +1540,9 @@ zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap,
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
@ -1576,12 +1582,12 @@ zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap,
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);
}
}

4
man/man8/zfs.8
View File

@ -2830,7 +2830,9 @@ Include the dataset's properties in the stream. This flag is implicit when -R i
.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