On 10/24/2011 05:52 AM, Tom Lane wrote: > The current packaging guidelines require packages that update from sysv > init scripts to systemd scripts to provide conversion triggers that are > fired on the basis of an NVR comparison: > https://fedoraproject.org/wiki/Packaging:ScriptletSnippets#Packages_migrating_to_a_systemd_unit_file_from_a_SysV_initscript > > That is, we assume that we know that all releases with NVR< some-cutoff > use initscripts and all releases with NVR>= same-cutoff use systemd. > The comments in the above-linked page acknowledge that this means it's > impossible to upgrade the package to a newer upstream release in > pre-systemd Fedora branches. (You can't just move the cutoff value > forward, because then an upgrade in F16 or later will mistakenly re-fire > the update trigger.) > > I'm really getting to the point where that's a completely unacceptable > restriction. I've already blown off one mysql bug-fix release in F15 > because of this restriction, and I see they just released another one > that I'll be unable to ship in F15 because the systemd guys failed to do > their homework, and there are likely to be several more before F15 dies. > > The idea I have at the moment is to ignore the advice to check package > version, and instead have the triggerun script check to see whether the > mysql sysv initscript file is present. I wonder whether anyone else has > dealt with this and has working scriptlets? > > regards, tom lane It has been already discussed (see [1]) that it is possible to bump the NVR in %triggerun macro to be able to update packages even in older branches. However, I haven't seen any working solutions to prevent the trigger code to be executed again when upgrading from already systemd-enabled package (see [2]). IOW, if we found a way to prevent the trigger to run in already systemd-enabled package, it would be possible to update packages even in older branches. We just need to remember to bump the NVR in %triggerun, which can be annoying but maybe less pain-full than other solutions. We can prevent the repeated trigger run by using "systemd-sysv-convert --show" in the trigger, since systemd-sysv-convert only appends to /var/lib/systemd/sysv-convert/database: %triggerun -- httpd < 1.0-2 if not /usr/bin/systemd-sysv-convert --show httpd >/dev/null 2>&1 ; then /usr/bin/systemd-sysv-convert --save httpd >/dev/null 2>&1 ||: /sbin/chkconfig --del httpd >/dev/null 2>&1 || : /bin/systemctl try-restart apache-httpd.service >/dev/null 2>&1 || : fi I've tried it and seems to do the thing. Please, correct me if I missed something. [1] http://lists.fedoraproject.org/pipermail/devel/2011-July/154838.html [2] http://lists.fedoraproject.org/pipermail/devel/2011-July/154906.html Honza -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
