[sheepdog-users] How enable Object Cache

[Cristian Del Carlo]

Hi,

with v0.9.3 the write performance are much better with kvm with
cache=writeback and sheepdog with the option "-w size = 2G ",

I think to use v0.9.3 to have this option.

Thanks.

Best regards,

Cristian


2016-09-21 13:50 GMT+02:00 Vasiliy Tolstov <v.tolstov at selfip.ru>:

> As I know, cache is useful and with it we can avoid complex setup
> involving bcache,enhanceio and other stuff.
> And as I know, Hitoshi says that object cache can be reworked and bring
> back after 1.0 release.
> I have setup with sata HDD and some ssd on server and want to use object
> cache on ssd to speedup writing.
> Maybe this is time to rethink this and bring it back?
>
> 21 Сен 2016 г. 12:57 пользователь "Takashi Menjo" <
> menjo.takashi at lab.ntt.co.jp> написал:
>
> Hi Cristian,
>
> Object cache feature is removed from v1.0.
> If you want it, please use v0.9.x or earlier.
>
> Regards,
> Takashi
>
>
> > -----Original Message-----
> > From: sheepdog-users [mailto:sheepdog-users-bounces at lists.wpkg.org] On
> > Behalf Of Cristian Del Carlo
> > Sent: Wednesday, September 21, 2016 6:35 PM
> > To: sheepdog-users at lists.wpkg.org
> > Subject: [sheepdog-users] How enable Object Cache
> >
> > Hi list,
> >
> >
> > i have installed sheepdog on two server with Centos 7.2.
> >
> > # sheep -v
> > Sheepdog daemon version 1.0_41_gb5a7613
> >
> >
> > I am tring to enable object cache to test i/o write of vm but the
> following
> > options seem to be for me incorrect:
> >
> > sheep -w size=200G # enable object cache with 200G space
> > sheep -w size=50G,directio # enable object cache with 50G space with
> O_DIRECT
> > for cached objects
> > On man page of "sheep" i see that:
> >
> >        -w, --wq-threads
> >               specify a number of threads for workqueue
> >
> >
> > How can i enable Object Cache?
> >
> >
> > Best regards,
> >
> >
> >
> >
> >
> > Cristian Del Carlo
> >
>
>
>
>
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>
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