Package: sysv-rc Version: 2.88dsf-59 Severity: normal File: /usr/sbin/invoke-rc.d
Hi, If you install systemd, unbound, resolvconf and squid3 on jessie and boot, system boot hangs. systemd starts unbound. unbound is started properly and informs resolvconf about being a DNS server. resolvconf runs the update-libc.d hook placed by squid3. squid3's resolvconf hook runs "invoke-rc.d squid3 reload". invoke-rc.d runs "systemctl reload squid3.service" and blocks, because squid3 isn't started yet. Eventually unbound.service times out. I argue that invoke-rc.d changed API. Formerly (with sysv) reloading a service that isn't started would generally do nothing (or fail). In any case, one generally wouldn't expect a reload operation to finish before the invoke-rc.d call returns (as it often just sends a signal). With systemd that changes to blocking. This behaviour change is unexpected and can break system boot. Marco d'Itri recommeded adding --no-block to the systemctl invocation. What do you think? Helmut
