For the record; my shift from Fedora-23 to Fedora-24 went
painlessly/successfully, thanks to the existing, good documentation.
Only thing I had to figure out logically (by experience, luckily, or I
would have started wasting time unnecessarily) was that I should try to
reboot when sys-* failed to start afterwards, which then worked, and all
was fine.
*Suggested documentation addition:**
*
So I think the main docs page should have a top-level link both in the
"Upgrade guides" section to "updating template association for
sys-net/sys-firewall" and also from the existing Fedora 23-to-24 doc
page, especially for some time now that Fedora-23 is EoL/End-of-Life. As
this is not specific to any particular version number, it should be easy
to find regardless of which upgrade one is performing, therefore I think
it should have its own page and be linked from the Upgrades section.
In particular, it should be easy to spot the information about the need
to reboot the computer immediately after changing the template
association for sys-firewall and sys-net, as that is not entirely
obvious for everyone.
The existing page does not mention sys-firewall/sys-net , neither does
it link to any other page that deals with that:
https://www.qubes-os.org/doc/template/fedora/upgrade-23-to-24/
And, if someone is coming to those pages AFTER having bravely tried to
update the system without searching (sufficiently?) through all the docs
(...), they just might be searching for this error message: "cannot
execute qrexec-deamon", which also should offer a hit to this suggested
new page among the top search results...
(I seached briefly myself, but did not find a page describing this
template switch for sys-net/sys-firewall .)
In case there is such a page that I did not find, here is some info that
it 'should' include:
************************
*Doc text suggestion:*
Disable both sys-firewall and sys-net so that only dom0 is running, then
change the template association to the new template in each one's VM
settings. Restart the computer.
PS. If you do not restart the computer right afterwards, but instead try
to start either one of them, you may get this error:
"Error starting VM 'sys-firewall'" / "Error starting VM 'sys-net'":
"cannot execute qrexec-deamon"
(This may also be the error you get if running the commands 'qvm-start
sys-firewall' / 'qvm-start sys-net' in this scenario)
****************
Happy xmas everyone :-)
@LeeteqXV
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