"You Are Here" on Snapshots

[Jorge Fábregas]

Hello again,

Another question with internal snapshots.  I can see the snapshot tree with:

virsh snapshot-list Win7vm --tree

However, I would like to know from what previous snapshot I'm currently
running off.  Something like the "You are here" that VMware shows.   Is
there a way to find that out?

Thanks,
Jorge

[Eric Blake]

On 10/09/2013 09:26 AM, Jorge Fábregas wrote:
> Hello again,
>
> Another question with internal snapshots.  I can see the snapshot tree with:
>
> virsh snapshot-list Win7vm --tree
>
> However, I would like to know from what previous snapshot I'm currently
> running off.  Something like the "You are here" that VMware shows.   Is
> there a way to find that out?

virsh snapshot-current --name $dom

will show you the current snapshot if there is one (that is, the state
at which the current execution most recently forked from, which may not
always exist if you start deleting snapshots).  I haven't played with
virt-manager's handling of snapshots, but if it doesn't already, it
should definitely highlight the current snapshot.

[Cole Robinson]

On 10/09/2013 11:55 AM, Eric Blake wrote:
> On 10/09/2013 09:26 AM, Jorge Fábregas wrote:
> > Hello again,
> >
> > Another question with internal snapshots.  I can see the snapshot tree with:
> >
> > virsh snapshot-list Win7vm --tree
> >
> > However, I would like to know from what previous snapshot I'm currently
> > running off.  Something like the "You are here" that VMware shows.   Is
> > there a way to find that out?
>
> virsh snapshot-current --name $dom
>
> will show you the current snapshot if there is one (that is, the state
> at which the current execution most recently forked from, which may not
> always exist if you start deleting snapshots).  I haven't played with
> virt-manager's handling of snapshots, but if it doesn't already, it
> should definitely highlight the current snapshot.

I had it in the initial UI, but then dropped it. There's some trade off here:
if we make it too prominent in the UI, I guarantee inexperienced users will
take current snapshot to mean 'all my current disk activity is being recorded
in the current snapshot', which isn't correct and could lead to potential data
loss if they revert (and ignore the explicit warnings virt-manager will show
before revert). But maybe some different wording will make it less ambiguous.
I should play with the vmware UI...

- Cole

[Cole Robinson]

On 10/09/2013 12:14 PM, Cole Robinson wrote:
> On 10/09/2013 11:55 AM, Eric Blake wrote:
> > On 10/09/2013 09:26 AM, Jorge Fábregas wrote:
> > > Hello again,
> > >
> > > Another question with internal snapshots.  I can see the snapshot tree with:
> > >
> > > virsh snapshot-list Win7vm --tree
> > >
> > > However, I would like to know from what previous snapshot I'm currently
> > > running off.  Something like the "You are here" that VMware shows.   Is
> > > there a way to find that out?
> >
> > virsh snapshot-current --name $dom
> >
> > will show you the current snapshot if there is one (that is, the state
> > at which the current execution most recently forked from, which may not
> > always exist if you start deleting snapshots).  I haven't played with
> > virt-manager's handling of snapshots, but if it doesn't already, it
> > should definitely highlight the current snapshot.
>
> I had it in the initial UI, but then dropped it. There's some trade off here:
> if we make it too prominent in the UI, I guarantee inexperienced users will
> take current snapshot to mean 'all my current disk activity is being recorded
> in the current snapshot', which isn't correct and could lead to potential data
> loss if they revert (and ignore the explicit warnings virt-manager will show
> before revert). But maybe some different wording will make it less ambiguous.
> I should play with the vmware UI...

Jorge, can you file a bug under Virtualization Tools->virt-manager about
tracking the 'current' bit in the UI? So it doesn't get lost.

Thanks,
Cole

[Jorge Fábregas]

On 10/09/2013 01:46 PM, Cole Robinson wrote:
> Jorge, can you file a bug under Virtualization Tools->virt-manager about
> tracking the 'current' bit in the UI? So it doesn't get lost.

Done!

https://bugzilla.redhat.com/show_bug.cgi?id=1017385

Yes, that would be a nice thing to have.  I had like 7 snapshots on a
given VM (doing a bunch of tests) and at one point I forgot from which
snapshot I forked from.

[Jorge Fábregas]

On 10/09/2013 02:45 PM, Jorge Fábregas wrote:
> Done!
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1017385

Hi Cole,

I got the email from bugzilla that this is done.  Thanks!   Is it coming
to the preview-repo soon?

Thanks,
Jorge

[Cole Robinson]

On 02/01/2014 03:40 PM, Jorge Fábregas wrote:
> On 10/09/2013 02:45 PM, Jorge Fábregas wrote:
> > Done!
> >
> > https://bugzilla.redhat.com/show_bug.cgi?id=1017385
>
> Hi Cole,
>
> I got the email from bugzilla that this is done.  Thanks!   Is it coming
> to the preview-repo soon?

I'm planning a new virt-manager release within the next couple weeks.

- Cole

[Jorge Fábregas]

On 10/09/2013 11:55 AM, Eric Blake wrote:
> virsh snapshot-current --name $dom

Thanks, exactly what I was looking for!