On Sunday, October 9, 2016 at 2:54:11 PM UTC, yaqu wrote:
> On Sun, 9 Oct 2016 06:19:47 -0700 (PDT),
> 8c36b1b85a745a25508d01ced9335bef7a1e4ed1 <necroku...@gmail.com> wrote:
> > I have delete a lot of big datas on one of my appvm, but the problem
> > is the size doesn't change eventhough 'df -h' in the appvm shows that
> > the user's data already decreased. Qubes-Manager and dom0 still
> > recognised its size with the old values. How can i proceed to
> > decrease it? 
> Procedure should be similar to compacting templates:
> https://www.qubes-os.org/doc/fedora-template-upgrade-21/#compacting-the-upgraded-template
> Inside VM fill unused space on private.img with zeros:
> [user@untrusted ~]$ dd if=/dev/zero of=/home/user/zero
> [user@untrusted ~]$ rm /home/user/zero
> And then copy image in dom0:
> [user@dom0 ~]$ qvm-shutdown --wait untrusted
> [user@dom0 ~]$ cd /var/lib/qubes/appvms/untrusted/
> [user@dom0 ~]$ cp --sparse=always private.img private.img.new
> [user@dom0 ~]$ mv private.img.new private.img
> But I have just noticed, that after removing big files in appvm, its
> private.img has been automagically compacted, without using this
> procedure. Tested on R3.2 and fedora23-based appvm.
> -- 
> yaqu

Excellent, it's working. Thanks for your answer. I skipped the dd part since I 
already delete big files before that and its still works.

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