On Tue, Jun 03, 2008 at 05:56:34PM +0200, Jürgen Kuri wrote:
> Hello Pasi,
> 
> I had a similar strange behaviour with backup via VSS on Windows 2003 Server 
> on different systems and 
> I assume your problem refers to the M$-VSS service too. In order to determine 
> if the issue refers to 
> M$-Windows or to Bacula try to make backup via the Windows backup tool 
> "ntbackup" at the DOS-prompt:
> 
> ntbackup backup "a path you want to backup" /j "test" /l:f /f "a path where 
> to store backup file"
> 
> This performs a backup via VSS. Take a look in to the eventlog application 
> and system in order to see if VSS and ntbackup worked.
> 
> If a test backup with ntbackup via VSS fails, perform a test backup without 
> reading backup data via VSS:
> 
> ntbackup backup "<a path you want to backup>" /j "test" /l:f /snap:off /f "<a 
> path where to store backup file>"
> 
> If the test backup via VSS does not work you will most likely have a problem 
> referred to VSS.
> 

Hello!

I tried backups with ntbackup and they seem to work fine using VSS.. I ran 8
backups with ntbackup (/snap:on) and they worked fine.. no errors or warning
in the event logs.

So that makes it interesting.. why does Bacula have problems with using VSS? 

> With 
> 
> "vssadmin list writers"
> 
> on DOS-prompt you can see if the VSS-writers have any problems. But in my 
> case "vssadmin" did not show any VSS-writer problems although we had a real 
> VSS-problem.
> 

Yep, I don't see any problems with VSS-writers..

> There is a Microsoft web page which may be will give you a solution: 
> http://dnn.mssbsfaq.de/SBS2003/Backup/ReinitialisierungdesVolumeShadowCopyService/tabid/1038/language/de-DE/Default.aspx
>  . But, alas, it is in german.
> 
> Microsoft says, if you have a faulty installation - what ever this means - 
> has changed involved components of VSS it could affect the VSS-functionality. 
> If so, you have to reregister the VSS-components by doing the following on 
> DOS prompt or via a batch file:
> 
> cd %windir%\system32
> Net stop vss
> Net stop swprv
> regsvr32 ole32.dll
> regsvr32 vss_ps.dll
> Vssvc /Register
> regsvr32 /i swprv.dll
> regsvr32 /i eventcls.dll
> regsvr32 es.dll
> regsvr32 stdprov.dll
> regsvr32 vssui.dll
> regsvr32 msxml.dll
> regsvr32 msxml3.dll
> regsvr32 msxml4.dll
> Net start swprv
> Net start vss
> 
> We did this here with our system and our third-party backup system and 
> ntbackup worked fine again.
> 
> I heard from the support of out third-party backup product that more and more 
> customers run into VSS problems if they make backups via VSS and all clues 
> seems to lead to M$-Windows' VSS. 
> 

Thanks a lot for your reply!

-- Pasi

> Jürgen
> 
> -----Ursprüngliche Nachricht-----
> Von: bacula-users-bounces AT lists.sourceforge DOT net 
> [mailto:bacula-users-bounces AT lists.sourceforge DOT net] Im Auftrag von 
> Pasi Kärkkäinen
> Gesendet: Montag, 2. Juni 2008 18:26
> An: John Drescher
> Cc: baculausers
> Betreff: Re: [Bacula-users] Bacula VSS problems / ERR=Access is denied
> 
> On Mon, Jun 02, 2008 at 07:09:58PM +0300, Pasi Kärkkäinen wrote:
> > On Mon, Jun 02, 2008 at 09:40:23AM -0400, John Drescher wrote:
> > > > btw. is there a way to make bacula automatically rerun jobs failing 
> > > > like this?
> > > >
> > > Although I have never done this the following two bacula directives
> > > look like they could help:
> > > 
> > > Run After Failed Job
> > > 
> > > Rerun Failed Levels
> > > 
> > > http://www.bacula.org/en/dev-manual/Configuring_Director.html
> > > 
> > 
> > Hmm.. it almost looks like 50% of the times I get that VSS error.. ie. every
> > second time it works and every second time it doesn't.
> > 
> > What's interesting is that the job itself terminates with "OK with
> > warnings".. it's definitely not OK because it does absolutely nothing.. 
> > 0 files backup up when that Access is denied happens.. 
> > 
> 
> Yeah, did some 8 more test runs and 4 of them failed with that VSS
> ERR=Access is denied error.. 
> 
> Is it possible that winbacula leaves VSS in some bad state? That would
> maybe explain why it works every second time.. or is it more likely that 
> there is something on the server causing this? 
> 
> -- Pasi
> 

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