On Wed, Sep 07, 2011 at 05:00:35PM +0800, Zhi Yong Wu wrote:
>From: Zhi Yong Wu <wuzhy@xxxxxxxxxxxxxxxxxx>
>To: libvir-list@xxxxxxxxxx
>Cc: stefanha@xxxxxxxxxxxxxxxxxx, agl@xxxxxxxxxx, zwu.kernel@xxxxxxxxx, Zhi
> Yong Wu <wuzhy@xxxxxxxxxxxxxxxxxx>
>Subject: [PATCH v1] domain_conf: add the support for disk I/O throttle
> setting
>Date: Wed, 7 Sep 2011 17:00:35 +0800
>Message-Id: <1315386035-23319-1-git-send-email-wuzhy@xxxxxxxxxxxxxxxxxx>
>X-Mailer: git-send-email 1.7.6
>X-Xagent-From: wuzhy@xxxxxxxxxxxxxxxxxx
>X-Xagent-To: wuzhy@xxxxxxxxxxxxxxxxxx
>X-Xagent-Gateway: vmsdvm4.vnet.ibm.com (XAGENTU3 at VMSDVM4)
>
>The first patch is only used to see if it is suitable for exteeding blkiotune to implement disk I/O throttling.
>
>As you have known, when blkiotune is issued without options, it will display current tuning parameters; If we exceed it, without options, what should it display? both info will? or should one new option be added to separately display them?
>
>Signed-off-by: Zhi Yong Wu <wuzhy@xxxxxxxxxxxxxxxxxx>
>---
> src/conf/domain_conf.c | 18 ++++++++++++++++++
> src/conf/domain_conf.h | 11 +++++++++++
> 2 files changed, 29 insertions(+), 0 deletions(-)
>
>diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
>index cce9955..7dd350a 100644
>--- a/src/conf/domain_conf.c
>+++ b/src/conf/domain_conf.c
>@@ -9065,6 +9065,24 @@ virDomainDiskDefFormat(virBufferPtr buf,
> virBufferAsprintf(buf, " <target dev='%s' bus='%s'/>\n",
> def->dst, bus);
>
>+ /*disk I/O throttling*/
>+ if (def->blkio.blkiothrottle) {
>+ virBufferAsprintf(&buf, " <blkiothrottle>\n");
>+ virBufferAsprintf(&buf, " <bps>%llu</bps>\n",
>+ def->blkiothrottle.bps);
>+ virBufferAsprintf(&buf, " <bps_rd>%llu</bps_rd>\n",
>+ def->blkiothrottle.bps_rd);
>+ virBufferAsprintf(&buf, " <bps_wr>%llu</bps_wr>\n",
>+ def->blkiothrottle.bps_wr);
>+ virBufferAsprintf(&buf, " <iops>%llu</iops>\n",
>+ def->blkiothrottle.iops);
>+ virBufferAsprintf(&buf, " <iops_rd>%llu</iops_rd>\n",
>+ def->blkiothrottle.iops_rd);
>+ virBufferAsprintf(&buf, " <iops_wr>%llu</iops_wr>\n",
>+ def->blkiothrottle.iops_wr);
>+ virBufferAsprintf(&buf, " </blkiothrottle>\n");
>+ }
>+
> if (def->bootIndex)
> virBufferAsprintf(buf, " <boot order='%d'/>\n", def->bootIndex);
> if (def->readonly)
>diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
>index e218a30..5902377 100644
>--- a/src/conf/domain_conf.h
>+++ b/src/conf/domain_conf.h
>@@ -258,6 +258,17 @@ struct _virDomainDiskDef {
> virDomainDiskHostDefPtr hosts;
> char *driverName;
> char *driverType;
>+
>+ /*disk I/O throttling*/
>+ struct {
>+ unsigned long long bps;
>+ unsigned long long bps_rd;
>+ unsigned long long bps_wr;
>+ unsigned long long iops;
>+ unsigned long long iops_rd;
>+ unsigned long long iops_wr;
>+ } blkiothrottle;
>+
> char *serial;
> int cachemode;
> int error_policy;
>--
>1.7.6
>
--
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