** Description changed: + [ Impact ] + + The boot time can be longer on system that configure their network in + the initrd. + + [ Test Plan ] + + The affected systems show "Sleeping $time seconds before retrying + getting a DHCP lease" in their boot log. Once applying the fix, this + message should not be found any more and "dhcpcd-10.0.6 starting" should + be only logged once (at most once for IPv4 and once for IPv6 depending + on the boot parameters). + + There are qemu-net and qemu-net-dnsmasq autopkgtests for this area of + code. + + [ Where problems could occur ] + + The DHCP code in the initrd are touched. So the boot can be affected. + Also updating initramfs-tools will regenerate the initrd and can cause + issues there (like full disks, etc). + + [ Original report ] + In automatically encrypted Clevis+Tang unlock of LUKS encrypted device (dmcrypt/cryptsetup) - on top of which the ZFS Pool for / resides, dhcpcd is used in order to obtain automatically an IP address during initramfs boot. During this phase, dhcpcd is called before interfaces have carrier causing a 29 seconds boot delay. Boot delay is currently 45 seconds, instead of the 15 seconds that it should. BUG Initially reported in: https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/2064926 Relevant Logs: ``` dhcpcd-10.0.6 starting [...] no interfaces have a carrier exiting due to oneshot dhcpcd exited Sleeping 29 seconds before retrying getting a DHCP lease dhcpcd-10.0.6 starting ``` A possible workaround would be to manually edit /usr/share/initramfs-tools/scripts/functions Changing this: `for ROUNDTTT in 30 60 90 120; do` To this: `for ROUNDTTT in 5 5 5 5; do` But the proper solution would be to continuously "scan" the state of the Interface (every Second or so), and wait until the interface is UP, before deciding to call dhcpcd.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2065037 Title: dhcpcd is called before interfaces have carrier causing a 29 seconds boot delay To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/2065037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
