You have been subscribed to a public bug:

I have 4 servers running the latest 16.04 updates from the development
branch (as of right now).

Each server is connected to NetApp storage using iscsi software
initiator.  There are a total of 56 volumes spread across two NetApp
arrays.  Each volume has 4 paths available to it which are being managed
by device mapper.

While logged into the iscsi sessions all I have to do is reboot the
server and I get a hang.

I see a message that says:

  "Reached target Shutdown"

followed by

  "systemd-shutdown[1]: Failed to finalize DM devices, ignoring"

and then I see 8 lines that say:

  "connection1:0: ping timeout of 5 secs expired, recv timeout 5, last rx 
4311815***, last ping 43118164**, now 4311817***"
  "connection2:0: ping timeout of 5 secs expired, recv timeout 5, last rx 
4311815***, last ping 43118164**, now 4311817***"
  "connection3:0: ping timeout of 5 secs expired, recv timeout 5, last rx 
4311815***, last ping 43118164**, now 4311817***"
  "connection4:0: ping timeout of 5 secs expired, recv timeout 5, last rx 
4311815***, last ping 43118164**, now 4311817***"
  "connection5:0: ping timeout of 5 secs expired, recv timeout 5, last rx 
4311815***, last ping 43118164**, now 4311817***"
  "connection6:0: ping timeout of 5 secs expired, recv timeout 5, last rx 
4311815***, last ping 43118164**, now 4311817***"
  "connection7:0: ping timeout of 5 secs expired, recv timeout 5, last rx 
4311815***, last ping 43118164**, now 4311817***"
  "connection8:0: ping timeout of 5 secs expired, recv timeout 5, last rx 
4311815***, last ping 43118164**, now 4311817***"
  NOTE: the actual values of the *'s differ for each line above.

This seems like a bug somewhere but I am unaware of any additional
logging that I could turn on to pinpoint the problem.

Note I also have similar setups that are not doing iscsi and they don't
have this problem.

Here is a screenshot of what I see on the shell when I try to reboot:

https://www.dropbox.com/s/93mv7cj8asspcpa/ShutdownCapture.JPG?dl=0

This is being tracked in NetApp bug tracker CQ number 860251.

If I log out of all iscsi sessions before rebooting then I do not
experience the hang:

iscsiadm -m node -U all

We are wondering if this could be some kind of shutdown ordering
problem.  Like the network devices have already disappeared and then
iscsi tries to perform some operation (hence the ping timeouts).

** Affects: systemd (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bot-comment xenial
-- 
Shutdown hang on 16.04 with iscsi targets
https://bugs.launchpad.net/bugs/1569925
You received this bug notification because you are a member of Ubuntu Desktop 
Bugs, which is subscribed to systemd in Ubuntu.

-- 
desktop-bugs mailing list
desktop-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/desktop-bugs

Reply via email to