Re: Remote deployment

[Alexander Larsson <alexl redhat com>]

An ostree static delta is normally a single "header" plus a number of
"delta parts", mostly in order for each file to not be too large when
downloading. Additionally, some files in a commit can be very large,
so stuffing them in a delta doesn't make a lot of snese. These are
"fallback objects".

 --min-fallback-size=0 disables fallbacks
 --inline puts all the delta parts in the (now large) header file

So, in combination these two give a standalone single-file version of
all that is changed between two commits.


On Thu, Mar 8, 2018 at 1:37 PM, Manuel Stühn <embedded justmail de> wrote:
> Colin Walters – Mon, 5. March 2018 23:22
> > Hi Manuel,
> >
> > On Tue, Feb 27, 2018, at 6:10 AM, Manuel Stühn wrote:
> > > #ostree --repo=repo static-delta apply-offline delta.file
> > > error: Opening deltapart 'deltas/81/ToIa4loKTd3vHK4XrWa
> > > +j4DWgWiukUMcdA_IeVDeA-AU4eGN8NXSVzRC+HN1cmS6H38IuxX_7DazmLAiITbOc/0':
> > > No such file or directory
> >
> > That's weird. We have a test case in git for this:
> > github.com/ostreedev/ostree/blob/fe6ae92ebc2940765008e4775d56be39661f3514/tests/test-delta.sh
> > that's currently passing. And playing with deltas locally in
> > one of my development repos things seem to work too.
> >
> > My initial thought is it was related to this recently fixed bug:
> > github.com/ostreedev/ostree/pull/1427
> > But AFAICS you shouldn't have been triggering that.
> >
> > What version of ostree are you using again?
>
> Thank you for your answer.  I already glimpsed into the testcases of yours and the qt-ota code which does 
> something similar (offline-support) and appended to the commandline "--min-fallback-size=0 --inline". 
> Unfortunately I do not have a clue, what these additional options do but now applying static-deltas seems 
> to work.
>
> The versions of ostree in usage is
> ostree 2016.15
>   +libsoup +gpgme +libarchive +selinux +libmount
>
> ATM I do those steps:
> 1. create a new bare repository
> 2. local-pull the branch to be updated from the archive-repo into the bare repo
> 3. apply the deltas and
> 4. local-pull the branch back to the archive repo.
>
> Is there a simple way how i could apply these static deltas directly to an "archive-z2" repo?
>
>
> Thanks,
> Manuel
>
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-- 
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 Alexander Larsson                                Red Hat, Inc
       alexl redhat com         alexander larsson gmail com