Thread: Simple question

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open-vm-tools-devel

Simple question

From: Stanislav <ste...@ci...> - 2012-03-15 15:16:31

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    Hi there,<br>
    <br>
    I see in the code "/* Check to see if we're going above our limit.
    See bug <b>605821</b>. */". Where can I find information about this
    bug?<br>
    <pre class="moz-signature" cols="72">-- 
Stas</pre>
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Re: Simple question

From: Dmitry T. <dt...@vm...> - 2012-03-15 16:15:50

Hi Stanislav,

On Thursday, March 15, 2012 07:16:14 PM Stanislav wrote:
> Hi there,
> 
> I see in the code "/* Check to see if we're going above our limit. See bug
> 605821. */". Where can I find information about this bug?

Because open-vm-tools originate from the same code base as our VMware Tools 
that are shipped with the platforms you may find some references to our 
internal bug tracking system in the sources. Unfortunately access to this 
system is restricted to employees of VMware.

Thanks,
Dmitry

Re: Simple question

From: Stanislav <ste...@ci...> - 2012-03-15 16:53:56

Thanks a lot.

Next simple question from my side. I wanted to use scripts before and 
after snapshot creation, but see that there is no RPC messages from 
ESX(WS) to VMTools(and no any actions in the scripts). Does it work fine 
for others? Maybe there are some tricks?

On 3/15/2012 8:15 PM, Dmitry Torokhov wrote:
> Hi Stanislav,
>
> On Thursday, March 15, 2012 07:16:14 PM Stanislav wrote:
>> Hi there,
>>
>> I see in the code "/* Check to see if we're going above our limit. See bug
>> 605821. */". Where can I find information about this bug?
> Because open-vm-tools originate from the same code base as our VMware Tools
> that are shipped with the platforms you may find some references to our
> internal bug tracking system in the sources. Unfortunately access to this
> system is restricted to employees of VMware.
>
> Thanks,
> Dmitry
>
>

-- 
Stas

Re: Simple question

From: Dmitry T. <dt...@vm...> - 2012-03-16 05:43:00

On Thu, Mar 15, 2012 at 08:53:43PM +0400, Stanislav wrote:
> Thanks a lot.
> 
> Next simple question from my side. I wanted to use scripts before
> and after snapshot creation, but see that there is no RPC messages
> from ESX(WS) to VMTools(and no any actions in the scripts). Does it
> work fine for others? Maybe there are some tricks?
>

What scripts/snapshots are you talking about? Are you trying to set up
VCB or just regular VM snapshots?

Thanks,
Dmitry

Re: Simple question

From: Stanislav <ste...@ci...> - 2012-03-16 06:43:31


On 3/16/2012 9:42 AM, Dmitry Torokhov wrote:
> On Thu, Mar 15, 2012 at 08:53:43PM +0400, Stanislav wrote:
>> Thanks a lot.
>>
>> Next simple question from my side. I wanted to use scripts before
>> and after snapshot creation, but see that there is no RPC messages
>> from ESX(WS) to VMTools(and no any actions in the scripts). Does it
>> work fine for others? Maybe there are some tricks?
>>
> What scripts/snapshots are you talking about? Are you trying to set up
> VCB or just regular VM snapshots?
>
> Thanks,
> Dmitry
>
I'm talking about regular VM snapshot, scripts: 
/usr/sbin/pre-freeze-script and /usr/sbin/post-thaw-script

-- 
Stas

Re: Simple question

From: Dmitry T. <dt...@vm...> - 2012-03-16 08:10:25

On Friday, March 16, 2012 10:43:19 AM Stanislav wrote:
> On 3/16/2012 9:42 AM, Dmitry Torokhov wrote:
> > On Thu, Mar 15, 2012 at 08:53:43PM +0400, Stanislav wrote:
> >> Thanks a lot.
> >> 
> >> Next simple question from my side. I wanted to use scripts before
> >> and after snapshot creation, but see that there is no RPC messages
> >> from ESX(WS) to VMTools(and no any actions in the scripts). Does it
> >> work fine for others? Maybe there are some tricks?
> > 
> > What scripts/snapshots are you talking about? Are you trying to set up
> > VCB or just regular VM snapshots?
> > 
> > Thanks,
> > Dmitry
> 
> I'm talking about regular VM snapshot, scripts:
> /usr/sbin/pre-freeze-script and /usr/sbin/post-thaw-script

Regular snapshots are transparent to the VM and no scripts are being invoked. 
The pre-freeze-script and post-thaw-script are being invoked y vmbackup plugin 
when doing a VCB snapshot.

Thanks,
Dmitry

Re: Simple question

From: Stanislav <ste...@ci...> - 2012-03-16 10:59:05

On 3/16/2012 12:10 PM, Dmitry Torokhov wrote:
> On Friday, March 16, 2012 10:43:19 AM Stanislav wrote:
>> On 3/16/2012 9:42 AM, Dmitry Torokhov wrote:
>>> On Thu, Mar 15, 2012 at 08:53:43PM +0400, Stanislav wrote:
>>>> Thanks a lot.
>>>>
>>>> Next simple question from my side. I wanted to use scripts before
>>>> and after snapshot creation, but see that there is no RPC messages
>>>> from ESX(WS) to VMTools(and no any actions in the scripts). Does it
>>>> work fine for others? Maybe there are some tricks?
>>> What scripts/snapshots are you talking about? Are you trying to set up
>>> VCB or just regular VM snapshots?
>>>
>>> Thanks,
>>> Dmitry
>> I'm talking about regular VM snapshot, scripts:
>> /usr/sbin/pre-freeze-script and /usr/sbin/post-thaw-script
> Regular snapshots are transparent to the VM and no scripts are being invoked.
> The pre-freeze-script and post-thaw-script are being invoked y vmbackup plugin
> when doing a VCB snapshot.
>
> Thanks,
> Dmitry
>
Dmitry, yes, sorry, my mistake. I meant VCB and vmbackup plugin.

-- 
Stas

Re: Simple question

From: Dmitry T. <dt...@vm...> - 2012-03-19 04:38:30

On Friday, March 16, 2012 02:58:50 PM Stanislav wrote:
> On 3/16/2012 12:10 PM, Dmitry Torokhov wrote:
> > On Friday, March 16, 2012 10:43:19 AM Stanislav wrote:
> >> On 3/16/2012 9:42 AM, Dmitry Torokhov wrote:
> >>> On Thu, Mar 15, 2012 at 08:53:43PM +0400, Stanislav wrote:
> >>>> Thanks a lot.
> >>>> 
> >>>> Next simple question from my side. I wanted to use scripts before
> >>>> and after snapshot creation, but see that there is no RPC messages
> >>>> from ESX(WS) to VMTools(and no any actions in the scripts). Does it
> >>>> work fine for others? Maybe there are some tricks?
> >>> 
> >>> What scripts/snapshots are you talking about? Are you trying to set up
> >>> VCB or just regular VM snapshots?
> >>> 
> >>> Thanks,
> >>> Dmitry
> >> 
> >> I'm talking about regular VM snapshot, scripts:
> >> /usr/sbin/pre-freeze-script and /usr/sbin/post-thaw-script
> > 
> > Regular snapshots are transparent to the VM and no scripts are being
> > invoked. The pre-freeze-script and post-thaw-script are being invoked y
> > vmbackup plugin when doing a VCB snapshot.
> > 
> > Thanks,
> > Dmitry
> 
> Dmitry, yes, sorry, my mistake. I meant VCB and vmbackup plugin.

Stanislav,

You should have gotten the answer already from Paul (he mentioned you were on 
the thread) but for the benefit of others following the thread:

If you have "Snapshot the virtual machine's memory" box checked when you take 
the snapshot we will not invoke vmbackup plugin and therefore will not execute 
pre-freeze and post-thaw scripts as there is no point in quescing the 
filesystems - we are talking a full snapshot of the system, including all the 
operations that are currently in progress.

You need to quesce filesystems if you are not saving contents of VM memory so 
that the data being backed up is in consistent state should you need to 
restore it.

Thanks,
Dmitry