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From Nux! <...@li.nux.ro>
Subject Re: Uploading of Volume - how does what here ?
Date Thu, 26 Feb 2015 09:26:19 GMT
Andrija,

I think this is one of those cases where we can verify it empirically. :-)
Start a volume upload and keep an eye on "ps", "top", "iotop", "df"/"mount" etc on the hypervisors.

HTH
Lucian

--
Sent from the Delta quadrant using Borg technology!

Nux!
www.nux.ro

----- Original Message -----
> From: "Andrija Panic" <andrija.panic@gmail.com>
> To: users@cloudstack.apache.org
> Cc: dev@cloudstack.apache.org
> Sent: Thursday, 26 February, 2015 09:05:01
> Subject: Re: Uploading of Volume - how does what here ?

> Thx Lucian,
> 
> that was my guessing, but would like some confirmation if anyone familiar
> with this...
> 
> Thanks
> 
> On 25 February 2015 at 17:57, Nux! <nux@li.nux.ro> wrote:
> 
>> Not a CEPH user, but what I believe happens is your HV mounts the NFS
>> storage and then does something like "qemu-img convert" to move it into
>> CEPH.
>>
>> HTH
>> Lucian
>>
>> --
>> Sent from the Delta quadrant using Borg technology!
>>
>> Nux!
>> www.nux.ro
>>
>> ----- Original Message -----
>> > From: "Andrija Panic" <andrija.panic@gmail.com>
>> > To: dev@cloudstack.apache.org, users@cloudstack.apache.org
>> > Sent: Wednesday, 25 February, 2015 12:09:59
>> > Subject: Uploading of Volume - how does what here ?
>>
>> > Hi guys,
>> >
>> > I'm just uploading a Volume, and I guess it will end up on the CEPH
>> storage
>> > that we are using.
>> >
>> > So my qyestion would be: VOLUME will end up on the primary storage in the
>> > end, but right now, I can see that the SSVM is actuall y downloading the
>> > Volume from internet, and writing it to Secondary Storage at the moment.
>> >
>> > WHat happens next - I know that both SSVM and ofcoure my NFS server, can
>> > not write/talk at all to CEPH ?
>> >
>> > Does maybe some randomly choosen host, mounts Secondary Storage NFS, read
>> > Volume, and upload/write to CEPH ? (Since only hypervisor hosts can
>> > actually talk to CEPH)
>> >
>> > Thanks in advance for clarification...
>> >
>> > --
>> >
>> > Andrija Panić
>>
> 
> 
> 
> --
> 
> Andrija Panić

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