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Forwarding the answer to the relevant mailing lists:

---

Hi,

Hope this could help,

I've encountered this issue myself not to long ago on Ubuntu 12.04 host,
it didn't happen again after messing with the Kernel Semaphore Limits parameters [1]:

Adding this [2] line to `/etc/sysctl.conf` seems to do the trick.


- Roey


[1] http://paste.openstack.org/show/73086/
[2] http://paste.openstack.org/show/73082/


From: Sukhdev Kapur [mailto:sukhdevkapur at gmail.com]
Sent: Monday, March 10, 2014 5:56 PM
To: Dane Leblanc (leblancd)
Cc: OpenStack Development Mailing List (not for usage questions); openstack-infra at lists.openstack.org; openstack-qa at lists.openstack.org
Subject: Re: [OpenStack-Infra] tgt restart fails in Cinder startup "start: job failed to start"

I see the same issue. This issue has crept in during the latest flurry of check-ins. I started noticing this issue a day or two before the Icehouse Feature Freeze deadline.

I tried restarting tgt as well, but, it does not help.

However, rebooting the VM helps clear it up.

Has anybody else seen it as well? Does anybody have a solution for it?

Thanks
-Sukhdev




On Mon, Mar 10, 2014 at 8:37 AM, Dane Leblanc (leblancd) <leblancd at cisco.com<mailto:leblancd at cisco.com>> wrote:
I don't know if anyone can give me some troubleshooting advice with this issue.

I'm seeing an occasional problem whereby after several DevStack unstack.sh/stack.sh<http://unstack.sh/stack.sh> cycles, the tgt daemon (tgtd) fails to start during Cinder startup.  Here's a snippet from the stack.sh log:

2014-03-10 07:09:45.214 | Starting Cinder
2014-03-10 07:09:45.215 | + return 0
2014-03-10 07:09:45.216 | + sudo rm -f /etc/tgt/conf.d/stack.conf
2014-03-10 07:09:45.217 | + _configure_tgt_for_config_d
2014-03-10 07:09:45.218 | + [[ ! -d /etc/tgt/stack.d/ ]]
2014-03-10 07:09:45.219 | + is_ubuntu
2014-03-10 07:09:45.220 | + [[ -z deb ]]
2014-03-10 07:09:45.221 | + '[' deb = deb ']'
2014-03-10 07:09:45.222 | + sudo service tgt restart
2014-03-10 07:09:45.223 | stop: Unknown instance:
2014-03-10 07:09:45.619 | start: Job failed to start
jenkins at neutronpluginsci:~/devstack$ 2014-03-10 07:09:45.621 | + exit_trap
2014-03-10 07:09:45.622 | + local r=1
2014-03-10 07:09:45.623 | ++ jobs -p
2014-03-10 07:09:45.624 | + jobs=
2014-03-10 07:09:45.625 | + [[ -n '' ]]
2014-03-10 07:09:45.626 | + exit 1

If I try to restart tgt manually without success:

jenkins at neutronpluginsci:~$ sudo service tgt restart
stop: Unknown instance:
start: Job failed to start
jenkins at neutronpluginsci:~$ sudo tgtd
librdmacm: couldn't read ABI version.
librdmacm: assuming: 4
CMA: unable to get RDMA device list
(null): iser_ib_init(3263) Failed to initialize RDMA; load kernel modules?
(null): fcoe_init(214) (null)
(null): fcoe_create_interface(171) no interface specified.
jenkins at neutronpluginsci:~$

The config in /etc/tgt is:

jenkins at neutronpluginsci:/etc/tgt$ ls -l
total 8
drwxr-xr-x 2 root root 4096 Mar 10 07:03 conf.d
lrwxrwxrwx 1 root root   30 Mar 10 06:50 stack.d -> /opt/stack/data/cinder/volumes
-rw-r--r-- 1 root root   58 Mar 10 07:07 targets.conf
jenkins at neutronpluginsci:/etc/tgt$ cat targets.conf
include /etc/tgt/conf.d/*.conf
include /etc/tgt/stack.d/*
jenkins at neutronpluginsci:/etc/tgt$ ls conf.d
jenkins at neutronpluginsci:/etc/tgt$ ls /opt/stack/data/cinder/volumes
jenkins at neutronpluginsci:/etc/tgt$

I don't know if there's any missing Cinder config in my DevStack localrc files. Here's one that I'm using:

MYSQL_PASSWORD=nova
RABBIT_PASSWORD=nova
SERVICE_TOKEN=nova
SERVICE_PASSWORD=nova
ADMIN_PASSWORD=nova
ENABLED_SERVICES=g-api,g-reg,key,n-api,n-crt,n-obj,n-cpu,n-cond,cinder,c-sch,c-api,c-vol,n-sch,n-novnc,n-xvnc,n-cauth,horizon,rabbit
enable_service mysql
disable_service n-net
enable_service q-svc
enable_service q-agt
enable_service q-l3
enable_service q-dhcp
enable_service q-meta
enable_service q-lbaas
enable_service neutron
enable_service tempest
VOLUME_BACKING_FILE_SIZE=2052M
Q_PLUGIN=cisco
declare -a Q_CISCO_PLUGIN_SUBPLUGINS=(openvswitch nexus)
declare -A Q_CISCO_PLUGIN_SWITCH_INFO=([10.0.100.243]=admin:Cisco12345:22:neutronpluginsci:1/9)
NCCLIENT_REPO=git://github.com/CiscoSystems/ncclient.git<http://github.com/CiscoSystems/ncclient.git>
PHYSICAL_NETWORK=physnet1
OVS_PHYSICAL_BRIDGE=br-eth1
TENANT_VLAN_RANGE=810:819
ENABLE_TENANT_VLANS=True
API_RATE_LIMIT=False
VERBOSE=True
DEBUG=True
LOGFILE=/opt/stack/logs/stack.sh.log
USE_SCREEN=True
SCREEN_LOGDIR=/opt/stack/logs

Here are links to a log showing another localrc file that I use, and the corresponding stack.sh log:

http://128.107.233.28:8080/job/neutron/1390/artifact/vpnaas_console_log.txt
http://128.107.233.28:8080/job/neutron/1390/artifact/vpnaas_stack_sh_log.txt

Does anyone have any advice on how to debug this, or recover from this (beyond rebooting the node)? Or am I missing any Cinder config?

Thanks in advance for any help on this!!!
Dane



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