Re: [rdiff-backup-users] Hash doesn't match recorded hash

[Sarel Botha]

The only really important file is the vmdk which is the hard disk. You 
can create a new virtual machine and point it at the existing vmdk to 
get to the data.

Sarel

On 11/15/2011 5:22 AM, Dominic Raferd wrote:
> On 15/11/2011 00:23, Alex Schuster wrote:
> > I need to restore an old VMware image, but I am getting LOTS of these
> > errors:
> >
> > Error reading /backup/weird/home/wonko/os/vmware/xp/winXPPro-0.log,
> > substituting empty file.
> > Warning: Hash da39a3ee5e6b4b0d3255bfef95601890afd80709 of winXPPro-0.log
> > doesn't match recorded hash db9943d0284382131b553cef380aae99871b0f2e!
> >
> > Any idea what has happened? rdiff-backup --check-destination-dir --force
> > says nothing has to be checked, and option --verify does not find
> > errors. The hard drive seems to be okay, no errors in the syslog, and a
> > long SMART selftest also does not find any errors. I can restore some
> > other directories I tried, but I need the backup of this VMware machine.
>
> Vmware files for a running vm may change while being backed up by 
> rdiff-backup, in which case you don't have a consistent backup. Maybe 
> this is why you have this inconsistent hash warning.
>
> Before using rdiff-backup on a VMware vm, my suggestion is to pause or 
> suspend or stop the vm (e.g. with vmrun). Alternatively use the VMware 
> snapshot facility and backup the snapshot rather than the running vm.
>
> None of this is much help if you have already lost your vm and are 
> trying to recover it from backup. You might try recovering older 
> versions of the vm (from your rdiff-backup repository), maybe you will 
> find a consistent and usable vm there. Also the file you mention is 
> only a log file and not critical. The critical files I think are 
> *.vmdk, *.vmx and *.nvram.
>
> Regards
>
> Dominic
>
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