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flexnbd: add a mirror-speed command to change mirror->max_bytes_per_second

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It's not actually honoured yet, and ideally, you'd also be able to set it as
part of the initial setup: "flexnbd mirror ... -m 4G". remote_argv for the
mirror case would need to become x=y z=w format first, though.
This commit is contained in:
nick
2013-08-14 13:33:02 +01:00
parent 385c9027db
commit 28fff91af1
4 changed files with 132 additions and 13 deletions
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78
src/mode.c
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@@ -113,6 +113,24 @@ static char acl_help_text[] =
VERBOSE_LINE
QUIET_LINE;
static struct option mirror_speed_options[] = {
GETOPT_HELP,
GETOPT_SOCK,
GETOPT_MAX_SPEED,
GETOPT_QUIET,
GETOPT_VERBOSE,
{0}
};
static char mirror_speed_short_options[] = "hs:m:" SOPT_QUIET SOPT_VERBOSE;
static char mirror_speed_help_text[] =
"Usage: flexnbd " CMD_MIRROR_SPEED " <options>\n\n"
"Set the maximum speed of a migration from a mirring server listening on SOCK.\n\n"
HELP_LINE
SOCK_LINE
MAX_SPEED_LINE
VERBOSE_LINE
QUIET_LINE;
static struct option mirror_options[] = {
GETOPT_HELP,
GETOPT_SOCK,
@@ -179,6 +197,7 @@ char help_help_text_arr[] =
"\tflexnbd write\n"
"\tflexnbd acl\n"
"\tflexnbd mirror\n"
"\tflexnbd mirror-speed\n"
"\tflexnbd break\n"
"\tflexnbd status\n"
"\tflexnbd help\n\n"
@@ -333,6 +352,36 @@ void read_acl_param( int c, char **sock )
read_sock_param( c, sock, acl_help_text );
}
void read_mirror_speed_param(
int c,
char **sock,
char **max_speed
)
{
switch( c ) {
case 'h':
fprintf( stdout, "%s\n", mirror_speed_help_text );
exit( 0 );
break;
case 's':
*sock = optarg;
break;
case 'm':
*max_speed = optarg;
break;
case 'q':
log_level = QUIET_LOG_LEVEL;
break;
case 'v':
log_level = VERBOSE_LOG_LEVEL;
break;
default:
exit_err( mirror_speed_help_text );
break;
}
}
void read_mirror_param(
int c,
char **sock,
@@ -655,6 +704,33 @@ int mode_acl( int argc, char *argv[] )
}
int mode_mirror_speed( int argc, char *argv[] )
{
int c;
char *sock = NULL;
char *speed = NULL;
while( 1 ) {
c = getopt_long( argc, argv, mirror_speed_short_options, mirror_speed_options, NULL );
if ( -1 == c ) { break; }
read_mirror_speed_param( c, &sock, &speed );
}
if ( NULL == sock ) {
fprintf( stderr, "--sock is required.\n" );
exit_err( mirror_speed_help_text );
}
if ( NULL == speed ) {
fprintf( stderr, "--max-speed is required.\n");
exit_err( mirror_speed_help_text );
}
do_remote_command( "mirror_max_bps", sock, 1, &speed );
return 0;
}
int mode_mirror( int argc, char *argv[] )
{
int c;
@@ -787,6 +863,8 @@ void mode(char* mode, int argc, char **argv)
}
else if ( IS_CMD( CMD_ACL, mode ) ) {
mode_acl( argc, argv );
} else if ( IS_CMD ( CMD_MIRROR_SPEED, mode ) ) {
mode_mirror_speed( argc, argv );
}
else if ( IS_CMD( CMD_MIRROR, mode ) ) {
mode_mirror( argc, argv );