[Bug 1053306] Re: iscsiadm hangs in recvmsg()

[dann frazier]

Oops, obvious missing information - this is precise's version,
2.0.871-0ubuntu9.

Also note that in this case we do have multiple target devices, which is
part of the reproduction criteria for
https://bugzilla.redhat.com/show_bug.cgi?id=624344. This was fixed
upstream w/  the following changeset that does not appear to be in
precise:

https://github.com/mikechristie/open-
iscsi/commit/b95a7ca80b255f0c5b34b2669367b629c8489552


** Bug watch added: Red Hat Bugzilla #624344
   https://bugzilla.redhat.com/show_bug.cgi?id=624344

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to open-iscsi in Ubuntu.
https://bugs.launchpad.net/bugs/1053306

Title:
  iscsiadm hangs in recvmsg()

Status in “open-iscsi” package in Ubuntu:
  New

Bug description:
  We occasionally see iscsiadm hang indefinitely on a system. It is
  difficult to reproduce, there maybe months between occurrences. This
  happened again today, and we collected the following information.

  We captured an strace of a failing iscsiadm discover process, I'll
  attach it here. All iscsiadm processes that are hung are also in
  recvmsg() when we attach strace.

  It was observed that there was one iscsid process - where normally
  there is 2. The pids are normally consecutive, so I presume one forks
  the other before daemonizing.

  syslog contains the following messages from iscsid:

  Sep 20 15:55:57 cn5 iscsid: semop up failed 4
  Sep 20 15:56:05 cn5 iscsid: semop down failed
  Sep 20 15:56:23 cn5 iscsid: semop up failed 4
  Sep 20 16:02:23 cn5 iscsid: semop up failed 4
  Sep 20 16:02:26 cn5 iscsid: semop up failed 4
  Sep 20 16:02:26 cn5 iscsid: semop up failed 4
  Sep 20 16:02:26 cn5 iscsid: semop up failed 4
  Sep 20 16:02:32 cn5 iscsid: semop up failed 4
  Sep 20 18:01:49 cn5 iscsid: semop up failed 4
  Sep 20 18:03:56 cn5 iscsid: semop up failed 4
  Sep 20 18:05:03 cn5 iscsid: semop up failed 4

  This sounds similar to the issue described in
  https://bugzilla.redhat.com/show_bug.cgi?id=676804, but note the
  different errno.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/open-iscsi/+bug/1053306/+subscriptions