block: Simplify block_set_io_throttle
Now that we can support boxed commands, use it to greatly reduce the number of parameters (and likelihood of getting out of sync) when adjusting throttle parameters. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Message-Id: <1468468228-27827-11-git-send-email-eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
parent
c818408e44
commit
4dc9397b62
111
blockdev.c
111
blockdev.c
@ -2634,49 +2634,17 @@ fail:
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}
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/* throttling disk I/O limits */
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void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd,
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int64_t bps_wr,
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int64_t iops,
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int64_t iops_rd,
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int64_t iops_wr,
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bool has_bps_max,
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int64_t bps_max,
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bool has_bps_rd_max,
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int64_t bps_rd_max,
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bool has_bps_wr_max,
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int64_t bps_wr_max,
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bool has_iops_max,
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int64_t iops_max,
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bool has_iops_rd_max,
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int64_t iops_rd_max,
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bool has_iops_wr_max,
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int64_t iops_wr_max,
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bool has_bps_max_length,
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int64_t bps_max_length,
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bool has_bps_rd_max_length,
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int64_t bps_rd_max_length,
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bool has_bps_wr_max_length,
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int64_t bps_wr_max_length,
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bool has_iops_max_length,
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int64_t iops_max_length,
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bool has_iops_rd_max_length,
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int64_t iops_rd_max_length,
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bool has_iops_wr_max_length,
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int64_t iops_wr_max_length,
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bool has_iops_size,
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int64_t iops_size,
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bool has_group,
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const char *group, Error **errp)
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void qmp_block_set_io_throttle(BlockIOThrottle *arg, Error **errp)
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{
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ThrottleConfig cfg;
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BlockDriverState *bs;
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BlockBackend *blk;
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AioContext *aio_context;
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blk = blk_by_name(device);
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blk = blk_by_name(arg->device);
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if (!blk) {
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error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
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"Device '%s' not found", device);
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"Device '%s' not found", arg->device);
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return;
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}
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@ -2685,59 +2653,59 @@ void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd,
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bs = blk_bs(blk);
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if (!bs) {
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error_setg(errp, "Device '%s' has no medium", device);
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error_setg(errp, "Device '%s' has no medium", arg->device);
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goto out;
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}
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throttle_config_init(&cfg);
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cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps;
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cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd;
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cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr;
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cfg.buckets[THROTTLE_BPS_TOTAL].avg = arg->bps;
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cfg.buckets[THROTTLE_BPS_READ].avg = arg->bps_rd;
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cfg.buckets[THROTTLE_BPS_WRITE].avg = arg->bps_wr;
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cfg.buckets[THROTTLE_OPS_TOTAL].avg = iops;
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cfg.buckets[THROTTLE_OPS_READ].avg = iops_rd;
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cfg.buckets[THROTTLE_OPS_WRITE].avg = iops_wr;
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cfg.buckets[THROTTLE_OPS_TOTAL].avg = arg->iops;
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cfg.buckets[THROTTLE_OPS_READ].avg = arg->iops_rd;
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cfg.buckets[THROTTLE_OPS_WRITE].avg = arg->iops_wr;
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if (has_bps_max) {
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cfg.buckets[THROTTLE_BPS_TOTAL].max = bps_max;
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if (arg->has_bps_max) {
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cfg.buckets[THROTTLE_BPS_TOTAL].max = arg->bps_max;
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}
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if (has_bps_rd_max) {
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cfg.buckets[THROTTLE_BPS_READ].max = bps_rd_max;
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if (arg->has_bps_rd_max) {
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cfg.buckets[THROTTLE_BPS_READ].max = arg->bps_rd_max;
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}
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if (has_bps_wr_max) {
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cfg.buckets[THROTTLE_BPS_WRITE].max = bps_wr_max;
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if (arg->has_bps_wr_max) {
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cfg.buckets[THROTTLE_BPS_WRITE].max = arg->bps_wr_max;
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}
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if (has_iops_max) {
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cfg.buckets[THROTTLE_OPS_TOTAL].max = iops_max;
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if (arg->has_iops_max) {
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cfg.buckets[THROTTLE_OPS_TOTAL].max = arg->iops_max;
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}
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if (has_iops_rd_max) {
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cfg.buckets[THROTTLE_OPS_READ].max = iops_rd_max;
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if (arg->has_iops_rd_max) {
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cfg.buckets[THROTTLE_OPS_READ].max = arg->iops_rd_max;
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}
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if (has_iops_wr_max) {
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cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max;
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if (arg->has_iops_wr_max) {
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cfg.buckets[THROTTLE_OPS_WRITE].max = arg->iops_wr_max;
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}
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if (has_bps_max_length) {
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cfg.buckets[THROTTLE_BPS_TOTAL].burst_length = bps_max_length;
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if (arg->has_bps_max_length) {
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cfg.buckets[THROTTLE_BPS_TOTAL].burst_length = arg->bps_max_length;
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}
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if (has_bps_rd_max_length) {
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cfg.buckets[THROTTLE_BPS_READ].burst_length = bps_rd_max_length;
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if (arg->has_bps_rd_max_length) {
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cfg.buckets[THROTTLE_BPS_READ].burst_length = arg->bps_rd_max_length;
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}
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if (has_bps_wr_max_length) {
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cfg.buckets[THROTTLE_BPS_WRITE].burst_length = bps_wr_max_length;
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if (arg->has_bps_wr_max_length) {
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cfg.buckets[THROTTLE_BPS_WRITE].burst_length = arg->bps_wr_max_length;
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}
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if (has_iops_max_length) {
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cfg.buckets[THROTTLE_OPS_TOTAL].burst_length = iops_max_length;
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if (arg->has_iops_max_length) {
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cfg.buckets[THROTTLE_OPS_TOTAL].burst_length = arg->iops_max_length;
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}
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if (has_iops_rd_max_length) {
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cfg.buckets[THROTTLE_OPS_READ].burst_length = iops_rd_max_length;
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if (arg->has_iops_rd_max_length) {
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cfg.buckets[THROTTLE_OPS_READ].burst_length = arg->iops_rd_max_length;
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}
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if (has_iops_wr_max_length) {
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cfg.buckets[THROTTLE_OPS_WRITE].burst_length = iops_wr_max_length;
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if (arg->has_iops_wr_max_length) {
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cfg.buckets[THROTTLE_OPS_WRITE].burst_length = arg->iops_wr_max_length;
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}
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if (has_iops_size) {
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cfg.op_size = iops_size;
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if (arg->has_iops_size) {
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cfg.op_size = arg->iops_size;
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}
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if (!throttle_is_valid(&cfg, errp)) {
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@ -2748,9 +2716,10 @@ void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd,
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/* Enable I/O limits if they're not enabled yet, otherwise
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* just update the throttling group. */
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if (!blk_get_public(blk)->throttle_state) {
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blk_io_limits_enable(blk, has_group ? group : device);
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} else if (has_group) {
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blk_io_limits_update_group(blk, group);
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blk_io_limits_enable(blk,
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arg->has_group ? arg->group : arg->device);
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} else if (arg->has_group) {
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blk_io_limits_update_group(blk, arg->group);
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}
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/* Set the new throttling configuration */
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blk_set_io_limits(blk, &cfg);
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45
hmp.c
45
hmp.c
@ -1439,42 +1439,17 @@ void hmp_change(Monitor *mon, const QDict *qdict)
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void hmp_block_set_io_throttle(Monitor *mon, const QDict *qdict)
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{
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Error *err = NULL;
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BlockIOThrottle throttle = {
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.device = (char *) qdict_get_str(qdict, "device"),
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.bps = qdict_get_int(qdict, "bps"),
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.bps_rd = qdict_get_int(qdict, "bps_rd"),
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.bps_wr = qdict_get_int(qdict, "bps_wr"),
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.iops = qdict_get_int(qdict, "iops"),
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.iops_rd = qdict_get_int(qdict, "iops_rd"),
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.iops_wr = qdict_get_int(qdict, "iops_wr"),
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};
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qmp_block_set_io_throttle(qdict_get_str(qdict, "device"),
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qdict_get_int(qdict, "bps"),
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qdict_get_int(qdict, "bps_rd"),
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qdict_get_int(qdict, "bps_wr"),
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qdict_get_int(qdict, "iops"),
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qdict_get_int(qdict, "iops_rd"),
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qdict_get_int(qdict, "iops_wr"),
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false, /* no burst max via HMP */
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0,
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false,
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0,
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false,
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0,
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false,
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0,
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false,
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0,
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false,
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0,
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false, /* no burst length via HMP */
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0,
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false,
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0,
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false,
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0,
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false,
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0,
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false,
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0,
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false,
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0,
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false, /* No default I/O size */
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0,
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false,
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NULL, &err);
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qmp_block_set_io_throttle(&throttle, &err);
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hmp_handle_error(mon, &err);
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}
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@ -1330,6 +1330,21 @@
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# the device will be removed from its group and the rest of its
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# members will not be affected. The 'group' parameter is ignored.
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#
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# See BlockIOThrottle for parameter descriptions.
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#
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# Returns: Nothing on success
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# If @device is not a valid block device, DeviceNotFound
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#
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# Since: 1.1
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##
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{ 'command': 'block_set_io_throttle', 'boxed': true,
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'data': 'BlockIOThrottle' }
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##
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# BlockIOThrottle
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#
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# A set of parameters describing block throttling.
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#
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# @device: The name of the device
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#
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# @bps: total throughput limit in bytes per second
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@ -1396,12 +1411,9 @@
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#
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# @group: #optional throttle group name (Since 2.4)
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#
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# Returns: Nothing on success
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# If @device is not a valid block device, DeviceNotFound
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#
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# Since: 1.1
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##
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{ 'command': 'block_set_io_throttle',
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{ 'struct': 'BlockIOThrottle',
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'data': { 'device': 'str', 'bps': 'int', 'bps_rd': 'int', 'bps_wr': 'int',
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'iops': 'int', 'iops_rd': 'int', 'iops_wr': 'int',
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'*bps_max': 'int', '*bps_rd_max': 'int',
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