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[Xen-API] How to enable blkio cgroup in xenserver

To: "xen-api@xxxxxxxxxxxxx" <xen-api@xxxxxxxxxxxxx>, "xs-devel@xxxxxxxxxxxxxxxxxxx" <xs-devel@xxxxxxxxxxxxxxxxxxx>

Date: Tue, 28 Jan 2014 06:19:26 +0530

Delivery-date: Tue, 28 Jan 2014 00:49:40 +0000

List-id: User and development list for XCP and XAPI <xen-api.lists.xen.org>

Hi Devops,

I'm trying to figure out a way to enable blkio cgroup in xenserver as per https://www.kernel.org/doc/Documentation/cgroups/blkio-controller.txt

Xenserver 6.1 linux-xen kernel has support for CGROUP but to my surprise CONFIG_BLK_CGROUP looks to be removed & CGROUP is not enabled at all. There is also no source related to blkio in src/block/Kconfig however I was able to recompile and install-test kernel with CONFIG_CGROUPS=yes.

Can anyone help out about how this can be added ? Is it okay to add relative source files in src/block/ and update the Kconfig to recompile and try ?

Xenserver seriously lacks behind without VM Disk QoS control like in VmWare or HyperV2012, CGROUP seems the right way to do it unless there is another option.

Regards,

Rushikesh

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