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From Jean-Francois Nadeau <the.jfnad...@gmail.com>
Subject Re: SSVM, templates and managed storage (iscsi/KVM)... how does it work ?
Date Tue, 05 Mar 2019 18:05:26 GMT
Thanks Syed,

That is super helpfull.

Jfn

On Mon, Mar 4, 2019 at 5:24 AM Syed Ahmed <sahmed@cloudops.com> wrote:

> Hi JF,
>
> So with the root Disk on a managed storage, there are two options:
>
> 1. If the backend+hypervisor can support cloning then an initial template
> will be copied to the Managed Storage and then all subsequent VMs with ROOT
> disk on this storage will basically
> clone the "template" volume.
>
> 2. If backend+hypervisor don't support cloning then we create an empty
> volume, mount it on the hypervisor (iscsi login), copy the template data,
> unmount it and then create a VM using this volume
>
> Hope this helps
>
> Thanks,
> -Syed
>
> On Sun, Mar 3, 2019 at 2:48 PM Jean-Francois Nadeau <
> the.jfnadeau@gmail.com>
> wrote:
>
> > I just found my problem in regards to the managed storage.... for some
> > reason,  the hypervisor type on the primary storage must be set to any
> and
> > not KVM (just Like solidfire).    The VM now boots from the template but
> Im
> > still wondering how did that happen :)
> >
> >
> > On Sun, Mar 3, 2019 at 2:33 PM Ivan Kudryavtsev <
> kudryavtsev_ia@bw-sw.com>
> > wrote:
> >
> > > Not sure, KVM works on arbitrary iSCSI target except the Solidfire.
> > >
> > > вс, 3 мар. 2019 г. в 14:10, Jean-Francois Nadeau <
> the.jfnadeau@gmail.com
> > >:
> > >
> > > > Hi Ivan,
> > > >
> > > > SS is still on NFS in this case.  It's the primary storage in trying
> to
> > > > move on iscsi managed storage so just like Solidfire/Ceph on primary.
> > > >
> > > > While NFS is used on both SS and primary,  I understand the SSVM just
> > > > mounts both shares and copies templates when needed.
> > > >
> > > > But if you have a qcow2 template on SS,  and primary on managed
> > > storage,  I
> > > > presume the SSVM copies the qcow2 into the just dynamically created
> > iscsi
> > > > volume in a raw way....  but I don't know that is what Im trying to
> > > connect
> > > > the dots :)
> > > >
> > > >
> > > > On Sun, Mar 3, 2019 at 2:02 PM Ivan Kudryavtsev <
> > > kudryavtsev_ia@bw-sw.com>
> > > > wrote:
> > > >
> > > > > Jean-Francois,
> > > > > NFS primary, NFS secondary worked always like a charm. It's the
> most
> > > used
> > > > > way for CloudStack, I suppose. It works great for my 4.11.2, worked
> > > great
> > > > > for 4.11.1 and even for full-trash 4.10 release.
> > > > >
> > > > > I have never tried SS on iSCSI and suppose it's a wrong way to go
> > > except
> > > > > the way you use Solidfire. For KVM you must use NFS, S3 or Swift.
> > > > >
> > > > >
> > > > > вс, 3 мар. 2019 г. в 13:50, Jean-Francois Nadeau <
> > > the.jfnadeau@gmail.com
> > > > >:
> > > > >
> > > > > > Hi all,
> > > > > >
> > > > > > Im kicking the tires with managed storage with under 4.11.2
with
> > KVM
> > > > and
> > > > > > Datera as primary storage.
> > > > > >
> > > > > > My first attempt at creating a VM from a template stored on
NFS
> > > > secondary
> > > > > > failed silently. Looking at the SSVM cloud logs I saw no
> exception.
> > > > The
> > > > > VM
> > > > > > root disks gets properly created on the backend and attached
on
> the
> > > KVM
> > > > > > host but the block device is blank.  Somehow the template did
not
> > get
> > > > > > copied over.
> > > > > >
> > > > > > Starting troubleshooting from this point... I realize I don't
> > > > understand
> > > > > > how this work vs what Im used to with NFS as both primary and
> > > secondary
> > > > > > storage.
> > > > > >
> > > > > > I presume the SSVM has to copy the qcow2 template from the NFS
> > > > secondary
> > > > > to
> > > > > > the primary storage but this one is iscsi now... and I did not
> > setup
> > > > > > initiator access to the SSVM or found instructions I need to
do
> > that.
> > > > > >
> > > > > > Can someone fill the blank on to how this work ?
> > > > > >
> > > > > > thanks all,
> > > > > >
> > > > > > Jean-Francois
> > > > > >
> > > > >
> > > > >
> > > > > --
> > > > > With best regards, Ivan Kudryavtsev
> > > > > Bitworks LLC
> > > > > Cell RU: +7-923-414-1515
> > > > > Cell USA: +1-201-257-1512
> > > > > WWW: http://bitworks.software/ <http://bw-sw.com/>
> > > > >
> > > >
> > >
> > >
> > > --
> > > With best regards, Ivan Kudryavtsev
> > > Bitworks LLC
> > > Cell RU: +7-923-414-1515
> > > Cell USA: +1-201-257-1512
> > > WWW: http://bitworks.software/ <http://bw-sw.com/>
> > >
> >
>

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