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Posted to dev@cloudstack.apache.org by Mike Tutkowski <mi...@solidfire.com> on 2013/09/09 01:21:39 UTC

Question about hypervisor snapshots

Hi,

I have a couple questions regarding how hypervisor snapshots work in
XenServer and ESX through CloudStack.

For XenServer, let's say I have a root disk on SR1 and a data disk on SR2.

1) If we take a hypervisor snapshot, do we snapshot both disks by default?

2) Assuming we do, is the snapshot always stored with the disk it is a
snapshot of on the same SR?

3) Assuming they are, will the entire snapshot process fail if there is
insufficient space on any SR?

Thanks!

-- 
*Mike Tutkowski*
*Senior CloudStack Developer, SolidFire Inc.*
e: mike.tutkowski@solidfire.com
o: 303.746.7302
Advancing the way the world uses the
cloud<http://solidfire.com/solution/overview/?video=play>
*™*

Re: Question about hypervisor snapshots

Posted by Mike Tutkowski <mi...@solidfire.com>.

Thanks for that info on VMware snapshots, Kelven!

Anyone have insight into XenServer here?

Thanks!


On Mon, Sep 9, 2013 at 2:38 PM, Kelven Yang <ke...@citrix.com> wrote:

>
>
> On 9/8/13 4:21 PM, "Mike Tutkowski" <mi...@solidfire.com> wrote:
>
> >Hi,
> >
> >I have a couple questions regarding how hypervisor snapshots work in
> >XenServer and ESX through CloudStack.
> >
> >For XenServer, let's say I have a root disk on SR1 and a data disk on SR2.
> >
> >1) If we take a hypervisor snapshot, do we snapshot both disks by default?
>
> For VMware, yes.
>
> >
> >2) Assuming we do, is the snapshot always stored with the disk it is a
> >snapshot of on the same SR?
>
> Yes, snapshot is stored along with its base disk in the same datastore
>
> >
> >3) Assuming they are, will the entire snapshot process fail if there is
> >insufficient space on any SR?
>
> If anyone fails, it will fail the snapshot as whole.
>
> >
> >Thanks!
> >
> >--
> >*Mike Tutkowski*
> >*Senior CloudStack Developer, SolidFire Inc.*
> >e: mike.tutkowski@solidfire.com
> >o: 303.746.7302
> >Advancing the way the world uses the
> >cloud<http://solidfire.com/solution/overview/?video=play>
> >* *
>
>


-- 
*Mike Tutkowski*
*Senior CloudStack Developer, SolidFire Inc.*
e: mike.tutkowski@solidfire.com
o: 303.746.7302
Advancing the way the world uses the
cloud<http://solidfire.com/solution/overview/?video=play>
*™*

Re: Question about hypervisor snapshots

Posted by Kelven Yang <ke...@citrix.com>.


On 9/8/13 4:21 PM, "Mike Tutkowski" <mi...@solidfire.com> wrote:

>Hi,
>
>I have a couple questions regarding how hypervisor snapshots work in
>XenServer and ESX through CloudStack.
>
>For XenServer, let's say I have a root disk on SR1 and a data disk on SR2.
>
>1) If we take a hypervisor snapshot, do we snapshot both disks by default?

For VMware, yes.

>
>2) Assuming we do, is the snapshot always stored with the disk it is a
>snapshot of on the same SR?

Yes, snapshot is stored along with its base disk in the same datastore

>
>3) Assuming they are, will the entire snapshot process fail if there is
>insufficient space on any SR?

If anyone fails, it will fail the snapshot as whole.

>
>Thanks!
>
>-- 
>*Mike Tutkowski*
>*Senior CloudStack Developer, SolidFire Inc.*
>e: mike.tutkowski@solidfire.com
>o: 303.746.7302
>Advancing the way the world uses the
>cloud<http://solidfire.com/solution/overview/?video=play>
>**