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<p>Hi Ondrej</p>
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<div class="moz-cite-prefix">On 10.07.2017 16:33, Ondrej Novy wrote:<br>
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cite="mid:CAOO6c=yyxreJqA2GdkXg2qCxU-4nn0EQYgDfidEUga0JE_EaiA@mail.gmail.com">
<div dir="ltr">Hi,<br>
<div class="gmail_extra"><br>
<div class="gmail_quote">2017-07-10 10:42 GMT+02:00 Benedikt
Trefzer <span dir="ltr"><<a
href="mailto:trefzer@cirrax.com" target="_blank"
moz-do-not-send="true">trefzer@cirrax.com</a>></span>:<br>
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<p>Keep an eye on upgrade from one stable to another
stable debian release. currently (and probably in the
future too), openstack only supports incremental
upgrade from one</p>
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<div>for example Swift supports upgrades even if version
diff is > 1.</div>
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I do not know about swift, but you can add horizon, since it has no
DB, you can skip releases easily.<br>
<blockquote type="cite"
cite="mid:CAOO6c=yyxreJqA2GdkXg2qCxU-4nn0EQYgDfidEUga0JE_EaiA@mail.gmail.com">
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<div bgcolor="#FFFFFF"> I do not have a solution for this
problem but I think it's worth thinking about.<br>
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<div>ack.</div>
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<div bgcolor="#FFFFFF"> I see two possible ways to solve<br>
- accept, (and document) that openstack upgrades are not
possible in debian<br>
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<div>this is not good solution :).</div>
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ACK<br>
<blockquote type="cite"
cite="mid:CAOO6c=yyxreJqA2GdkXg2qCxU-4nn0EQYgDfidEUga0JE_EaiA@mail.gmail.com">
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<div bgcolor="#FFFFFF"> - have the intermediat openstack
releases as sort of unsupported, use for upgrade only,
packages available (eg. as snapshots ?) (but this means
you need all branches)<br>
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<div>this is too much work and not straight forward for
users. Why I should add unofficial repositories of OS just
for upgrade?</div>
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<div>If it's possible with other Debian packages, we should
found solution for OS too. I think it's possible to
upgrade OS if version diff is > 1. It only needs to be
tested, checked and fixed sometimes. Same "problem" is in
Ubuntu when you are upgrading between LTS versions. How
Ubuntu solves this?</div>
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The problem with the upgrades are the databases which needs upgrade.
with plain OS, db upgrades are only possible for n to n+1. So if you
want to support n to n+x upgrades in Debian you need to keep all the
DB migration script from earlier versions.<br>
Even worse, at least nova (others I do not know) does some
db-migration during normal operation, which for large installations
can take quite a while (hours). <br>
<br>
I think you have to do quite a lot of patching if you want to
support n to n+x upgrades. <br>
<br>
I have no idea about Ubuntu's solution !<br>
<br>
Benedikt<br>
<br>
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<blockquote type="cite"
cite="mid:CAOO6c=yyxreJqA2GdkXg2qCxU-4nn0EQYgDfidEUga0JE_EaiA@mail.gmail.com">
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<div class="gmail_extra">-- <br>
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<div>Best regards<br>
Ondřej Nový<br>
<br>
Email: <a href="mailto:novy@ondrej.org"
target="_blank" moz-do-not-send="true">novy@ondrej.org</a></div>
<div>PGP: 3D98 3C52 EB85 980C 46A5 6090 3573 1255
9D1E 064B<br>
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