Stopping TGT service is getting stuck on Ubuntu

[Aviram Bar-Haim]

root@node-3:~# /etc/init.d/tgt stop
 * Stopping target framework daemon tgtd
(getting stuck)

From another (parallel) ssh connection:
root@node-3:~# pstree -a |grep -i tgt -A 10
  | `-tgt /etc/init.d/tgt stop
  | `-tgtadm --op delete --mode system
  |-sshd
  | `-bash
  |-sshd -D
  | `-sshd
  | `-bash
  | |-grep --color=auto -i tgt -A 10
  | `-pstree -a
  |-systemd-logind
  |-systemd-udevd --daemon
  |-tgtd
  | `-tgtd
  |-upstart-file-br --daemon
  |-upstart-socket- --daemon
  `-upstart-udev-br --daemon

root@node-3:~# cat /etc/issue
Ubuntu 14.04 LTS \n \l

root@node-3:~# dpkg -l |grep tgt
ii tgt 1:1.0.43-0ubuntu4 amd64 Linux SCSI target user-space tools

{"build_id": "2015-04-29_07-55-19", "build_number": "361", "release_versions": {"2014.2.2-6.1": {"VERSION": {"build_id": "2015-04-29_07-55-19", "build_number": "361", "api": "1.0", "fuel-library_sha": "0e5b82d24853304befb22145ac4aaf3545d295e1", "nailgun_sha": "e660b1c09d7d4d07bdd48d424ce9aed3b6facd6e", "feature_groups": ["mirantis"], "openstack_version": "2014.2.2-6.1", "production": "docker", "python-fuelclient_sha": "8cd6cf575d3c101dee1032abb6877dfa8487e077", "astute_sha": "04ebab96d57b0e8acbf2d7f3ba05e4fbf31b741e", "fuel-ostf_sha": "b38602c841deaa03ddffc95c02f319360462cbe3", "release": "6.1", "fuelmain_sha": "ee112acfdd0f9017ef40be53e8e51bb5c429e97c"}}}, "auth_required": true, "api": "1.0", "fuel-library_sha": "0e5b82d24853304befb22145ac4aaf3545d295e1", "nailgun_sha": "e660b1c09d7d4d07bdd48d424ce9aed3b6facd6e", "feature_groups": ["mirantis"], "openstack_version": "2014.2.2-6.1", "production": "docker", "python-fuelclient_sha": "8cd6cf575d3c101dee1032abb6877dfa8487e077", "astute_sha": "04ebab96d57b0e8acbf2d7f3ba05e4fbf31b741e", "fuel-ostf_sha": "b38602c841deaa03ddffc95c02f319360462cbe3", "release": "6.1", "fuelmain_sha": "ee112acfdd0f9017ef40be53e8e51bb5c429e97c"}

[Aviram Bar-Haim (aviramb)]

workaround:
  \rm -f /var/run/tgtd* && killall -9 tgtd
  service tgt stop

[Bogdan Dobrelya (bogdando)]

Cinder with LVM over iSCSI normally should be used only for dev/test environments, hence this is a medium priority bug.

[Alexei Sheplyakov (asheplyakov)]

There might be some connected clients, or a lot of data to flush to the hard drive(s).
Please post the output of the following command:

 tgtadm --lld iscsi --op show --mode target

[Nastya Urlapova (aurlapova)]

Moved to Invalid, was a more than month w/o confirmation.

[Aviram Bar-Haim (aviramb)]

Reproduced over Fuel 8.0 GA.

root@node-5:~# pstree -a |grep -i tgt -A 10
  | | `-tgt /etc/init.d/tgt stop
  | | `-tgtadm --op delete --mode system
  | `-sshd
  | `-bash
  | |-grep --color=auto -i tgt -A 10
  | `-pstree -a
  |-systemd-logind
  |-systemd-udevd --daemon
  |-tgtd
  | `-tgtd
  |-upstart-file-br --daemon
  |-upstart-socket- --daemon
  |-upstart-udev-br --daemon
  `-zfs-fuse --pidfile /var/run/zfs-fuse.pid
      `-53*[{zfs-fuse}]
root@node-5:~# dpkg -l |grep tgt
ii tgt 1:1.0.43-0ubuntu4.1~14.04.2 amd64 Linux SCSI target user-space tools

root@node-5:~# tgtadm --lld iscsi --op show --mode target
root@node-5:~#

[Dina Belova (dbelova)]

We should not have 9.0 bugs targeted to 9.0 after SCF. Marking as won't fix for 9.0

[Dmitry Teselkin (teselkin-d)]

We can't reproduce the issue.
Please provide detailed steps how to reproduce.

BTW, why there is zfs-fuse on your system?

[Vitaly Sedelnik (vsedelnik)]

Closing this bug as Invalid as it stayed in Incomplete status for more than a month.