> > 5) in old initscripts, there was /etc/init.d/halt with section for ups > > shutdown. With that script gone, was that functionality ported to > > systemd > > somehow? > > Well, any such code is just inherently broken. It *cannot* work. A > number of kernel subsystems hook into the shutdown code of the > kernel. For example storage code syncs meta data to disk after the > reboot() syscall is invoked. If you however turn off power before > reaching reboot(), then this step is omitted which might trigger data > loss. UPS code like that needs to sit in the kernel itself to properly > work. Adding userspace kludges which invokes this from userspace is a > recipe for desaster. The point of UPS is to prevent data loss after all, > and if you turn off the power before the kernel dealt with reboot() you > invite data loss. (And no, just adding random sleeps, is not a fix, it > just delays the problem.) > > (That all said you may drop binaries into /lib/systemd/system-shutdown > which are executed right before invoking reboot(). But if you package > anything that drops binaries into that dir ... how can automake & friends use this directory? FOO=$(pkg-config --variable=systemdsystemunitdir systemd)/../system-shutdown (or FOO=$(dirname $(pkg-config --variable=systemdsystemunitdir systemd) )/system-shutdown or is there a better way for this? -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
