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Use setproctitle to report progress of zfs send

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This allows parsing of zfs send progress by checking the process
title.
Doing so requires some changes to the send code in libzfs_sendrecv.c;
primarily these changes move some of the accounting around, to allow
for the code to be verbose as normal, or set the process title. Unlike
BSD, setproctitle() isn't standard in Linux; thus, borrowed it from
libbsd with slight modifications.

Authored-by: Sean Eric Fagan <sef@FreeBSD.org>
Co-authored-by: Ryan Moeller <ryan@iXsystems.com>
Co-authored-by: Ameer Hamza <ahamza@ixsystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #14376
This commit is contained in:
Ameer Hamza
2023-01-17 23:17:35 +05:00
committed by Tony Hutter
parent 164d184ed9
commit 777c98ee52
10 changed files with 438 additions and 55 deletions
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cmd/zfs/zfs_main.c
+13 -6
View File
@@ -315,14 +315,14 @@ get_usage(zfs_help_t idx)
case HELP_ROLLBACK:
return (gettext("\trollback [-rRf] <snapshot>\n"));
case HELP_SEND:
return (gettext("\tsend [-DnPpRvLecwhb] [-[i|I] snapshot] "
return (gettext("\tsend [-DnPpRVvLecwhb] [-[i|I] snapshot] "
"<snapshot>\n"
"\tsend [-DnvPLecw] [-i snapshot|bookmark] "
"\tsend [-DnVvPLecw] [-i snapshot|bookmark] "
"<filesystem|volume|snapshot>\n"
"\tsend [-DnPpvLec] [-i bookmark|snapshot] "
"\tsend [-DnPpVvLec] [-i bookmark|snapshot] "
"--redact <bookmark> <snapshot>\n"
"\tsend [-nvPe] -t <receive_resume_token>\n"
"\tsend [-Pnv] --saved filesystem\n"));
"\tsend [-nVvPe] -t <receive_resume_token>\n"
"\tsend [-PnVv] --saved filesystem\n"));
case HELP_SET:
return (gettext("\tset <property=value> ... "
"<filesystem|volume|snapshot> ...\n"));
@@ -4437,6 +4437,7 @@ zfs_do_send(int argc, char **argv)
{"props", no_argument, NULL, 'p'},
{"parsable", no_argument, NULL, 'P'},
{"dedup", no_argument, NULL, 'D'},
{"proctitle", no_argument, NULL, 'V'},
{"verbose", no_argument, NULL, 'v'},
{"dryrun", no_argument, NULL, 'n'},
{"large-block", no_argument, NULL, 'L'},
@@ -4451,7 +4452,7 @@ zfs_do_send(int argc, char **argv)
};
/* check options */
while ((c = getopt_long(argc, argv, ":i:I:RsDpvnPLeht:cwbd:S",
while ((c = getopt_long(argc, argv, ":i:I:RsDpVvnPLeht:cwbd:S",
long_options, NULL)) != -1) {
switch (c) {
case 'i':
@@ -4486,6 +4487,9 @@ zfs_do_send(int argc, char **argv)
case 'P':
flags.parsable = B_TRUE;
break;
case 'V':
flags.progressastitle = B_TRUE;
break;
case 'v':
flags.verbosity++;
flags.progress = B_TRUE;
@@ -8664,6 +8668,7 @@ main(int argc, char **argv)
int i = 0;
char *cmdname;
char **newargv;
extern char **environ;
(void) setlocale(LC_ALL, "");
(void) setlocale(LC_NUMERIC, "C");
@@ -8723,6 +8728,8 @@ main(int argc, char **argv)
libzfs_print_on_error(g_zfs, B_TRUE);
zfs_setproctitle_init(argc, argv, environ);
/*
* Many commands modify input strings for string parsing reasons.
* We create a copy to protect the original argv.