You are viewing a plain text version of this content. The canonical link for it is here.
Posted to users@cloudstack.apache.org by Andrei Mikhailovsky <an...@arhont.com> on 2013/08/11 00:39:32 UTC
Disk volume size over 2TB
Hello guys,
I am trying to setup a guest vm volume with larger than 2TB. I've changed the custom.diskoffering.size.max variable to 10000 instead of 2000 and tried to create a 4TB volume. Before doing that i've restarted the management server. While creating a new volume I had an error message complaining that the volume is over 2000GB.
Is there something that I am missing? Or does the CS has a built in limit of 2TB per disk volume?
thanks
Andrei
Re: Disk volume size over 2TB
Posted by Marty Sweet <ms...@gmail.com>.
Would it be possible to attach your management server log? This will
usually give a pretty good idea of which part of cloudstack is causing the
error. I assume you have restarted the cloud management service after
changing the config?
Marty
On Thursday, August 15, 2013, Kirk Kosinski wrote:
> Which hypervisor are you using? For XenServer and vSphere the max
> virtual disk size (VHD and VMDK, respectively) is ~2 TB. For a VMFS
> datastore on vSphere, the version and block size can limit it further,
> so check the VMware docs. For KVM (QCOW2) it is apparently much larger
> [1].
>
> Best regards,
> Kirk
>
> [1] http://rwmj.wordpress.com/2011/10/03/maximum-qcow2-disk-size/
>
> On 08/10/2013 06:21 PM, Kirk Jantzer wrote:
> > I'm not entirelty certain about CS, but I do not some of the earlier
> > hypervisors (xenserver, kvm, esx 4) only support datastores up to 2TB
> > (minus 512B). to get around this in the guest, you could present multiple
> > 2TB volumes, then raid them together in a raid-0.
> >
> >
> > On Sat, Aug 10, 2013 at 6:39 PM, Andrei Mikhailovsky <andrei@arhont.com<javascript:;>
> >wrote:
> >
> >> Hello guys,
> >>
> >> I am trying to setup a guest vm volume with larger than 2TB. I've
> changed
> >> the custom.diskoffering.size.max variable to 10000 instead of 2000 and
> >> tried to create a 4TB volume. Before doing that i've restarted the
> >> management server. While creating a new volume I had an error message
> >> complaining that the volume is over 2000GB.
> >>
> >> Is there something that I am missing? Or does the CS has a built in
> limit
> >> of 2TB per disk volume?
> >>
> >> thanks
> >>
> >> Andrei
> >>
> >>
> >
> >
>
Re: Disk volume size over 2TB
Posted by Kirk Kosinski <ki...@gmail.com>.
Which hypervisor are you using? For XenServer and vSphere the max
virtual disk size (VHD and VMDK, respectively) is ~2 TB. For a VMFS
datastore on vSphere, the version and block size can limit it further,
so check the VMware docs. For KVM (QCOW2) it is apparently much larger [1].
Best regards,
Kirk
[1] http://rwmj.wordpress.com/2011/10/03/maximum-qcow2-disk-size/
On 08/10/2013 06:21 PM, Kirk Jantzer wrote:
> I'm not entirelty certain about CS, but I do not some of the earlier
> hypervisors (xenserver, kvm, esx 4) only support datastores up to 2TB
> (minus 512B). to get around this in the guest, you could present multiple
> 2TB volumes, then raid them together in a raid-0.
>
>
> On Sat, Aug 10, 2013 at 6:39 PM, Andrei Mikhailovsky <an...@arhont.com>wrote:
>
>> Hello guys,
>>
>> I am trying to setup a guest vm volume with larger than 2TB. I've changed
>> the custom.diskoffering.size.max variable to 10000 instead of 2000 and
>> tried to create a 4TB volume. Before doing that i've restarted the
>> management server. While creating a new volume I had an error message
>> complaining that the volume is over 2000GB.
>>
>> Is there something that I am missing? Or does the CS has a built in limit
>> of 2TB per disk volume?
>>
>> thanks
>>
>> Andrei
>>
>>
>
>
Re: Disk volume size over 2TB
Posted by Kirk Jantzer <ki...@gmail.com>.
I'm not entirelty certain about CS, but I do not some of the earlier
hypervisors (xenserver, kvm, esx 4) only support datastores up to 2TB
(minus 512B). to get around this in the guest, you could present multiple
2TB volumes, then raid them together in a raid-0.
On Sat, Aug 10, 2013 at 6:39 PM, Andrei Mikhailovsky <an...@arhont.com>wrote:
> Hello guys,
>
> I am trying to setup a guest vm volume with larger than 2TB. I've changed
> the custom.diskoffering.size.max variable to 10000 instead of 2000 and
> tried to create a 4TB volume. Before doing that i've restarted the
> management server. While creating a new volume I had an error message
> complaining that the volume is over 2000GB.
>
> Is there something that I am missing? Or does the CS has a built in limit
> of 2TB per disk volume?
>
> thanks
>
> Andrei
>
>
--
Regards,
Kirk Jantzer
c: (678) 561-5475
http://about.met/kirkjantzer