Bacula-users

Re: [Bacula-users] tape error and bacula: ...block numbers differ

2009-02-09 07:14:56
Subject: Re: [Bacula-users] tape error and bacula: ...block numbers differ
From: Martin Simmons <martin AT lispworks DOT com>
To: kern AT sibbald DOT com
Date: Mon, 9 Feb 2009 12:10:12 GMT
>>>>> On Sat, 7 Feb 2009 12:17:33 +0100, Kern Sibbald said:
> 
> On Saturday 07 February 2009 11:33:58 Ralf Gross wrote:
> > Kern Sibbald schrieb:
> > > The problem described in the email below is probably an important data
> > > loss problem due (most likely) to an I/O error, but more importantly due
> > > to a misconfigured tape drive.  From the information I see below, it
> > > appears to me that you have lost significant data.  This is probably due
> > > to the fact that the HBA or the tape drive is running in asynchronous
> > > mode (cached or buffered) while Bacula *requires* you to run everything
> > > concerning tapes in synchronous mode -- please see the Tape testing
> > > chapter for more information.
> > >
> > > This data loss due to asynchronous mode will probably also occur when
> > > your tape fills.
> >
> > The verify job hasn't found any errors, so it seems that all data
> > that was backed up could be read.
> 
> Verify will not find missing data, unless you restored everything and 
> compared 
> it to the original, so I am still a bit skeptical ...

What is the purpose of Verify then?

__Martin

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