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From Nux! <...@li.nux.ro>
Subject Re: Disk throtling on KVM - shared storage - works ot not ?
Date Tue, 10 Mar 2015 08:48:26 GMT
Andrei,

A reboot of the guest OS is just yet another activity of the VM, from the hypervisor pov the
machine is on and running.
That's why you need stop/start (which I imagine is what ACS does).

Lucian

--
Sent from the Delta quadrant using Borg technology!

Nux!
www.nux.ro

----- Original Message -----
> From: "Andrei Mikhailovsky" <andrei@arhont.com>
> To: dev@cloudstack.apache.org
> Sent: Monday, 9 March, 2015 23:24:23
> Subject: Re: Disk throtling on KVM - shared storage - works ot not ?

> Hi Guys,
> 
> What i have noticed ( with version 4.2.1 I think) is that when you attach a new
> disk with throttle offering to the running vm, the throttling settings are not
> passed to kvm untill the vm is restarted from the acs side. Simply doing the
> reboot within the OS itself doesn't help. However, once the restart is done,
> the throttle settings are passed on and it works okay.
> 
> Andrei
> 
> ----- Original Message -----
> 
>> From: "Andrija Panic" <andrija.panic@gmail.com>
>> To: dev@cloudstack.apache.org
>> Sent: Monday, 9 March, 2015 3:30:01 PM
>> Subject: Re: Disk throtling on KVM - shared storage - works ot not ?
> 
>> Thx guys !
>> On Mar 9, 2015 4:10 PM, "Wei ZHOU" <ustcweizhou@gmail.com> wrote:
> 
>> > Hi Andria,
>> >
>> > I am sure it works with QEMU 1.2.0+ , of course including Ubuntu
>> > 14.04.
>> >
>> > Wei
>> >
>> >
>> > 2015-03-09 15:53 GMT+01:00 Andrija Panic <andrija.panic@gmail.com>:
>> >
>> > > Hi Wei,
>> > >
>> > > thanks for info - it is CentOS 6.x and libvirt 1.2.3 (manually
>> > > compiled
>> > > with RBD support) and also custom version of QEMU (original stock
>> > > qemu
>> > from
>> > > CentOS 6.4, patched by Inktank for RBD support)
>> > >
>> > > So this is the reason I guess ?
>> > >
>> > > Do you know if it works with Ubuntu 14.04 - I plan using this for
>> > > new ACS
>> > > installation?
>> > >
>> > >
>> > > Thanks
>> > >
>> > > On 9 March 2015 at 15:48, Wei ZHOU <ustcweizhou@gmail.com> wrote:
>> > >
>> > > > What's the QEMU and libvirt version?
>> > > > QEMU on CentOS 6.X does not support it.
>> > > >
>> > > > 2015-03-09 15:01 GMT+01:00 Andrija Panic
>> > > > <andrija.panic@gmail.com>:
>> > > >
>> > > > > Because it doesnt work on my ACS 4.3 installation with CEPH
>> > > > > :)
>> > > > >
>> > > > > I checked virsh dumpxml so only throtling on network level is
>> > present -
>> > > > > unless it wasnt applied because of my qemu version (intank's
>> > > > > patched
>> > > > > versions of stocl 0.12.1.2, just RBD support added).
>> > > > > qemu-kvm version problematic perhaps ?
>> > > > >
>> > > > > Was it supposed to work with 4.3 also, Wido ?
>> > > > >
>> > > > > Thanks
>> > > > >
>> > > > > On 9 March 2015 at 14:11, Wido den Hollander <wido@widodh.nl>
>> > > > > wrote:
>> > > > >
>> > > > > > -----BEGIN PGP SIGNED MESSAGE-----
>> > > > > > Hash: SHA1
>> > > > > >
>> > > > > >
>> > > > > >
>> > > > > > On 03/09/2015 01:57 PM, Andrija Panic wrote:
>> > > > > > > Hi,
>> > > > > > >
>> > > > > > > I'm wondering if disk throtling on ACS44 or later works
>> > > > > > > on shared
>> > > > > > > storage (limiting number of IOPS and bandwtih, on compute
>> > > > > > > offering)
>> > > > > > >
>> > > > > >
>> > > > > > Why shouldn't it work? The throttling is done inside Qemu
>> > > > > > and works
>> > > > > > just fine with NFS or Ceph.
>> > > > > >
>> > > > > > Wido
>> > > > > >
>> > > > > > > I know this does NOT work (shared storage) on ACS 4.3,
>> > > > > > > I'm
>> > > > > > > wondering if it is there in 4.4/4/5 ?
>> > > > > > >
>> > > > > > > We are using KVM.
>> > > > > > >
>> > > > > > > Thanks,
>> > > > > > >
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>> > > > > > -----END PGP SIGNATURE-----
>> > > > > >
>> > > > >
>> > > > >
>> > > > >
>> > > > > --
>> > > > >
>> > > > > Andrija Panić
>> > > > >
>> > > >
>> > >
>> > >
>> > >
>> > > --
>> > >
>> > > Andrija Panić
>> > >

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