Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.7 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.7-rc4-yakkety/ ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Tags added: kernel-da-key xenial -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1594666 Title: Multipath service fails to start in Ubuntu 16.04 Status in linux package in Ubuntu: Incomplete Bug description: CONFIGURATION DETAILS Host OS with Support Pack - Ubuntu 16.04 System(s) Under Test - x86 Adapter(s) Under Test - Skyhawk Network Configuration - Connected to Juniper Switch SAN Configuration - LIO Target BUG REPRODUCTION DETAILS Steps To Reproduce Bug - Enable multipath service, reboot the server. There is a similar bug raised but not sure if it relates to the issue I am getting : https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=817940 Below is the output while trying to start multipath service root@dhcp-10-227-28-83:~# service multipathd status ● multipathd.service - Device-Mapper Multipath Device Controller Loaded: loaded (/lib/systemd/system/multipathd.service; enabled; vendor preset: enabled) Active: active (running) (Result: timeout) since Thu 2016-04-21 20:54:36 PDT; 1h 43min ago Main PID: 6156 (code=exited, status=0/SUCCESS) CGroup: /system.slice/multipath-tools.service └─2420 /sbin/multipathd Apr 21 22:23:37 dhcp-10-227-28-83 multipathd[6156]: could not create uxsock: 98 Apr 21 22:23:37 dhcp-10-227-28-83 multipathd[6156]: sda: using deprecated getuid callout Apr 21 22:23:37 dhcp-10-227-28-83 multipathd[6156]: process is already running Apr 21 22:23:37 dhcp-10-227-28-83 multipathd[6156]: path checkers start up Apr 21 22:25:07 dhcp-10-227-28-83 systemd[1]: multipathd.service: Start operation timed out. Terminating. Apr 21 22:25:07 dhcp-10-227-28-83 multipathd[6156]: --------shut down------- Apr 21 22:25:07 dhcp-10-227-28-83 systemd[1]: Failed to start Device-Mapper Multipath Device Controller. Apr 21 22:25:07 dhcp-10-227-28-83 systemd[1]: multipathd.service: Unit entered failed state. Apr 21 22:25:07 dhcp-10-227-28-83 systemd[1]: multipathd.service: Failed with result 'timeout'. Apr 21 22:37:54 dhcp-10-227-28-83 systemd[1]: Started Device-Mapper Multipath Device Controller. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1594666/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp

