Thanks Daniel, I am currently using libvirt 0.6.3. Is there a way to do it in this version. If it is not at all possible in 0.6.3, and only possible from 0.8.1 onwards, then I will upgrade to 0.8.1. Because for the version upgrade, I will have to clearly explain to my client the reason why we need to upgrade. So, If I can fetch the same info as "virDomainGetBlockInfo" in 0.6.3 in some other way, that would be just awesome. Or if I can calculate the disk size from any other parameters, then please guide me on that also. Please help. Thanks and Regards Sagar Barve ----- Original Message ----- From: "Daniel P. Berrange" <berrange(a)redhat.com&gt; To: "IKI-サガル　バルウェ" <sagar.barve(a)ikic.co.jp&gt; Cc: <libvir-list(a)redhat.com&gt; Sent: Friday, June 11, 2010 6:43 PM Subject: Re: [libvirt] Virtual disk size associated with a Domain > On Fri, Jun 11, 2010 at 06:09:19PM +0900, IKI-サガル　バルウェ wrote: >> Hello, >> >> Is there any way to fetch the size of all the virtual disks associated >> with >> a Domain?? >> >> I could not find one in the libvirt API., I tried using 'virStorageVol' >> and >> 'virStoragePool', but they returned null objects. >> Also I fetched 'virDomainBlockStats', but did not understand the >> information >> returned. i.e. 'rd_bytes' and 'wr_bytes'. Can we use this info for >> calculating the disk sizes? > > >> Also, What does the size of the "img" file for a Domain represent? Is it >> the >> disc size? > > virDomainGetBlockInfo gives both several sizes - see the header file > comments for a description of what each means. > > > Daniel > -- > |: Red Hat, Engineering, London -o- > http://people.redhat.com/berrange/ :| > |: http://libvirt.org -o- http://virt-manager.org -o- > http://deltacloud.org :| > |: http://autobuild.org -o- > http://search.cpan.org/~danberr/ :| > |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B > 9505 :|