[kernel-xen] Feature Request - zram module
gordan at bobich.net
Wed Jul 17 01:24:41 EST 2013
On Wed, 17 Jul 2013 01:01:24 +1000, Steven Haigh <netwiz at crc.id.au>
> On 17/07/13 00:12, Gordan Bobic wrote:
>> Would it be OK to enable the zram module in the dom0
>> kernel rpms?
>> I find it extremely handy for things like fast cache
>> tier and swap space for domUs. I'm sure other people
>> might find it useful for this sort of thing, too.
> Any chance you can lodge this as an enhancement request via the bug
> I'll do a bit of research and look at including it in 3.10.2-1 if all
> goes well.
I've built my own kernel for now (I'm still on 3.9.9, Nvidia driver
to have issues with 3.10+xen, but I'll be switching dom0 do an ATI card
tonight anyway and plan to use it with the open-source driver unless I
find the 2D performance is really terrible). The preliminary diff is:
# diff config-3.9.x86_64 config-3.9.x86_64.new
< # Linux/x86 3.9.2 Kernel Configuration
> # Linux/x86 3.9.9-2.el6xen.x86_64 Kernel Configuration
< # CONFIG_ZSMALLOC is not set
> # CONFIG_ZRAM_DEBUG is not set
< # CONFIG_ZCACHE is not set
Will test this tonight. My main use case is ZFS with zvols for backing
domU disks, and zram is handly as a L2ARC.
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