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.pa...@gmail.com> > To: us...@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! <n...@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.pa...@gmail.com> >> > To: dev@cloudstack.apache.org, us...@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
