network-manager sometimes fails to start properly, missing /run/sendsigs.omit.d

[Michael Marley]

After switching to systemd, network-manager often fails to start properly. Instead of startup up as it should, it seems to get into a tight loop, burning through about 25% of each thread of my CPU. This only happens on one of my systems, the one that is equipped with an SSD. I have another system with the same software configuration that is equipped with an HDD that has never experienced this problem. If I let it sit for a long time, sometimes it eventually stops. During the time the CPU usage is high, the following text is spammed repeatedly to /var/log/syslog:

Mar 11 21:40:53 mamarley-laptop dnsmasq[21306]: FAILED to start up
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <warn> dnsmasq disappeared from the bus.
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <info> Writing DNS information to /sbin/resolvconf
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <warn> dnsmasq exited with error: Filesystem problem (missing file/directory; permissions; etc) (3)
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <info> Writing DNS information to /sbin/resolvconf
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <warn> dnsmasq appeared on DBus: :1.2766
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <info> DNS: starting dnsmasq...
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <warn> dnsmasq not available on the bus, can't update servers.
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <error> [1426124453.970764] [dns-manager/nm-dns-dnsmasq.c:398] update(): dnsmasq owner not found on bus: Could not get owner of name 'org.freedesktop.NetworkManager.dnsmasq': no such name
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <warn> DNS: plugin dnsmasq update failed
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <info> Writing DNS information to /sbin/resolvconf
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: dnsmasq: failed to open pidfile /run/sendsigs.omit.d/network-manager.dnsmasq.pid: No such file or directory
Mar 11 21:40:53 mamarley-laptop dnsmasq[21325]: failed to open pidfile /run/sendsigs.omit.d/network-manager.dnsmasq.pid: No such file or directory
Mar 11 21:40:53 mamarley-laptop dnsmasq[21325]: FAILED to start up
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <warn> dnsmasq disappeared from the bus.
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <info> Writing DNS information to /sbin/resolvconf
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <warn> dnsmasq exited with error: Filesystem problem (missing file/directory; permissions; etc) (3)
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <info> Writing DNS information to /sbin/resolvconf
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <warn> dnsmasq appeared on DBus: :1.2767
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <info> DNS: starting dnsmasq...
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <warn> dnsmasq not available on the bus, can't update servers.
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <error> [1426124453.987394] [dns-manager/nm-dns-dnsmasq.c:398] update(): dnsmasq owner not found on bus: Could not get owner of name 'org.freedesktop.NetworkManager.dnsmasq': no such name
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <warn> DNS: plugin dnsmasq update failed
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: <info> Writing DNS information to /sbin/resolvconf
Mar 11 21:40:53 mamarley-laptop NetworkManager[515]: dnsmasq: failed to open pidfile /run/sendsigs.omit.d/network-manager.dnsmasq.pid: No such file or directory
Mar 11 21:40:53 mamarley-laptop dnsmasq[21344]: failed to open pidfile /run/sendsigs.omit.d/network-manager.dnsmasq.pid: No such file or directory

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: systemd 219-4ubuntu5
ProcVersionSignature: Ubuntu 3.19.0-9.9-lowlatency 3.19.1
Uname: Linux 3.19.0-9-lowlatency x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.16.2-0ubuntu2
Architecture: amd64
CurrentDesktop: KDE
Date: Wed Mar 11 21:41:34 2015
InstallationDate: Installed on 2014-06-01 (283 days ago)
InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.1)
MachineType: LENOVO 2359CTO
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-9-lowlatency root=UUID=1f7829ef-ffb8-4182-ac92-40d613ea78c9 ro elevator=deadline intel_pstate=enable "acpi_osi=Windows 2012"
SourcePackage: systemd
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/21/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: G4ETA2WW (2.62 )
dmi.board.asset.tag: Not Available
dmi.board.name: 2359CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrG4ETA2WW(2.62):bd08/21/2014:svnLENOVO:pn2359CTO:pvrThinkPadT530:rvnLENOVO:rn2359CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2359CTO
dmi.product.version: ThinkPad T530
dmi.sys.vendor: LENOVO

[Martin Pitt (pitti)]

Do you actually have a /run/sendsigs.omit.d/ directory after booting? If yes, then this is a race condition at boot, if not, there's something wrong with /usr/lib/tmpfiles.d/debian.conf which creates that directory.

I'd like to see a full "journalctl -b" output. If the directory is missing after booting, can you please also run

  SYSTEMD_LOG_LEVEL=debug systemd-tmpfiles --create --exclude-prefix=/dev

and give me the output? Does that create /run/sendsigs.omit.d?

[Michael Marley (mamarley)]

The directory is indeed missing. If I run the journalctl command, it just says "No journal files were found." (No, I haven't modified the logging configuration.) Running the systemd-tmpfiles command does create that directory. I have attached the output.

[Michael Marley (mamarley)]

Interesting, I tried running the journalctl command again and now it works. Here is the output.

[Martin Pitt (pitti)]

Same boot cycles as in bug 1431107, so I'll mark these as dupes.