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Changing error message of QMP 'migrate_set_downtime' to seconds

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Using QMP, the error message of 'migrate_set_downtime' was displaying
the values in milliseconds, being misleading with the command that
accepts the value in seconds:

{ "execute": "migrate_set_downtime", "arguments": {"value": 3000}}
{"error": {"class": "GenericError", "desc": "Parameter 'downtime_limit'
expects an integer in the range of 0 to 2000000 milliseconds"}}

This message is also seen in HMP when trying to set the same
parameter:

(qemu) migrate_set_parameter downtime-limit 3000000
Parameter 'downtime_limit' expects an integer in the range of 0 to
2000000 milliseconds

To allow for a proper error message when using QMP, a validation
of the user input was added in 'qmp_migrate_set_downtime'.

Signed-off-by: Daniel Henrique Barboza <danielhb@linux.vnet.ibm.com>
Message-Id: <20170222151729.5812-1-danielhb@linux.vnet.ibm.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Daniel Henrique Barboza 2017-02-22 12:17:29 -03:00 committed by Dr. David Alan Gilbert
parent 6181478f63
commit 87c9cc1c30
1 changed files with 16 additions and 4 deletions
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20
migration/migration.c
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@ -49,6 +49,10 @@
* for sending the last part */
#define DEFAULT_MIGRATE_SET_DOWNTIME 300
/* Maximum migrate downtime set to 2000 seconds */
#define MAX_MIGRATE_DOWNTIME_SECONDS 2000
#define MAX_MIGRATE_DOWNTIME (MAX_MIGRATE_DOWNTIME_SECONDS * 1000)
/* Default compression thread count */
#define DEFAULT_MIGRATE_COMPRESS_THREAD_COUNT 8
/* Default decompression thread count, usually decompression is at
@ -843,10 +847,11 @@ void qmp_migrate_set_parameters(MigrationParameters *params, Error **errp)
return;
}
if (params->has_downtime_limit &&
(params->downtime_limit < 0 || params->downtime_limit > 2000000)) {
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
"downtime_limit",
"an integer in the range of 0 to 2000000 milliseconds");
(params->downtime_limit < 0 ||
params->downtime_limit > MAX_MIGRATE_DOWNTIME)) {
error_setg(errp, "Parameter 'downtime_limit' expects an integer in "
"the range of 0 to %d milliseconds",
MAX_MIGRATE_DOWNTIME);
return;
}
if (params->has_x_checkpoint_delay && (params->x_checkpoint_delay < 0)) {
@ -1289,6 +1294,13 @@ void qmp_migrate_set_speed(int64_t value, Error **errp)
void qmp_migrate_set_downtime(double value, Error **errp)
{
if (value < 0 || value > MAX_MIGRATE_DOWNTIME_SECONDS) {
error_setg(errp, "Parameter 'downtime_limit' expects an integer in "
"the range of 0 to %d seconds",
MAX_MIGRATE_DOWNTIME_SECONDS);
return;
}
value *= 1000; /* Convert to milliseconds */
value = MAX(0, MIN(INT64_MAX, value));