It is a sparse file i believe, by confirm that

[root@server export-domain]# du -hs VM1.ova
20G     VM1.ova <--- actual size on disk

[root@server export-domain]# ls -l VM1.ova
-rw-------. 1 root root 179142214656 Jul 13 02:56 VM1.ova  <--- real file size

After backup on bareos, it shown 167GB is backed up



After restore

[root@server export-domain]# ls -l ../restored/VM1.ova

-rw-------. 1 root root 177794008064 Jul 12 15:07 ../restored/VM1.ova

[root@mgnt21 export-domain]# du ../restored/VM1.ova

166G    ../restored/VM1.ova <--- reverted to full allocated file.





On Friday, July 12, 2019 at 10:40:31 PM UTC+8, Spadajspadaj wrote:
> Are you sure the OVA file is a sparse one? AFAIR, thin provisioning 
> means that the file size should sum up to already provisioned chunks of 
> data.
> 
> In other words, if inside the virtual machine you use 4G and have a 4G 
> file even though the maximum disk size is 30G you'd have a 4G file. But 
> it wouldn't be a sparse file.
> 
> If it were a sparse file, the filesystem would report a file size of 30G 
> but with only 4G of actual contents.
> 

> 
> I hope I'm not making this overly confusing :-)
> 
> 
> On 12.07.2019 09:56, levindecaro wrote:
> > Hi,
> >
> > I'm using bareos 18.2, to backup bunch of ova files exported from 
> > RHEV, the ova file size is the actual used size of the image after 
> > export(thin image). However bareos still allocate the real size of 
> > image during backup or restore. The sparse=yes options seems cannot 
> > handle ova files.
> >
> > Anyone has experience to workaround that?
> >
> > Thank you!
> >

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