# Failed to start PBS dataservice-lock seems to be held **URL:** \ **Category:** Users/Site Administrators\ **Created:** [March 15, 2018, 7:34am UTC](https://community.openpbs.org/t/failed-to-start-pbs-dataservice-lock-seems-to-be-held/899 "2018-03-15T07:34:57Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Prabhudev](https://avatars.discourse-cdn.com/v4/letter/p/71e660/32.png) [@Prabhudev](https://community.openpbs.org/u/Prabhudev)\ **Post date:** [March 15, 2018, 7:34am UTC](https://community.openpbs.org/t/failed-to-start-pbs-dataservice-lock-seems-to-be-held/899/1 "2018-03-15T07:34:57Z")
I am getting failed to acquire lock problem. Someone in the forum had a similar problem and they had corrected it. The suggested solutions are:- 1.To clean /var folder if it is full(My /var folder is only 74% full) 2.Few lines be added in pbspro/sbin/pbs\_dataservice to check the ownership of /var/run/postgresql. if it is different from the database user defined in /var/spool/pbspro/server\_priv/db\_user, the ownership should be changed accordingly.(I don’t have postgresql directory created in /var/run) Here is what I am getting- [root@host1 datastore]# service pbs restart Restarting PBS Stopping PBS PBS mom - was pid: 117648 PBS sched - was pid: 117662 PBS comm - was pid: 117614 Waiting for shutdown to complete Starting PBS PBS comm /opt/pbs/sbin/pbs\_comm ready (pid=119554),Threads:4 PBS mom PBS sched Connecting to PBS dataservice…Failed to start PBS dataservice:[Failed to acquire lock on /var/spool/pbs/datastore/pbs\_dblock. Lock seems to be held by pid: 119947 running on host: host1 cannot start] .Failed to start PBS dataservice:[Failed to acquire lock on /var/spool/pbs/datastore/pbs\_dblock. Lock seems to be held by pid: 119947 running on host: host1 - cannot start] .Failed to start PBS dataservice:[Failed to acquire lock on /var/spool/pbs/datastore/pbs\_dblock. Lock seems to be held by pid: 119947 running on host: host1- cannot start] .Failed to start PBS dataservice:[Failed to acquire lock on /var/spool/pbs/datastore/pbs\_dblock. Lock seems to be held by pid: 119947 running on host: host1 - cannot start] continuing in background. PBS server Please help me. ---
**Author:** ![mkaro](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.openpbs.org/mkaro/32/85_2.png) [@mkaro](https://community.openpbs.org/u/mkaro)\ **Post date:** [March 15, 2018, 3:25pm UTC](https://community.openpbs.org/t/failed-to-start-pbs-dataservice-lock-seems-to-be-held/899/2 "2018-03-15T15:25:19Z")
Looks like another instance of the database may be running. What is PID 119947? The following command will show you processes related to PBS… ps -ef | grep -i pbs Please make sure all PBS Pro processes are stopped before you try to start the service. ---
**Author:** ![Prabhudev](https://avatars.discourse-cdn.com/v4/letter/p/71e660/32.png) [@Prabhudev](https://community.openpbs.org/u/Prabhudev)\ **Post date:** [March 19, 2018, 4:48am UTC](https://community.openpbs.org/t/failed-to-start-pbs-dataservice-lock-seems-to-be-held/899/3 "2018-03-19T04:48:44Z")
I stopped all pbs processes and then restarted.Everytime some other process with different pid seems to hold the lock.I have the same problem [root@host1 kbharadw]# sudo /etc/init.d/pbs stop Stopping PBS PBS mom - was pid: 1072123 PBS sched - was pid: 1072137 PBS comm - was pid: 1072085 Waiting for shutdown to complete [root@host1 datastore]# ps -ef | grep -i pbs root 1073924 3148393 0 10:13 pts/1 00:00:00 grep --color=auto -i pbs [root@host1 datastore]# sudo /etc/init.d/pbs start Starting PBS PBS comm /opt/pbs/sbin/pbs\_comm ready (pid=1074020), Threads:4 PBS mom PBS sched Connecting to PBS dataservice…Failed to start PBS dataservice:[Failed to acquire lock on /var/spool/pbs/datastore/pbs\_dblock. Lock seems to be held by pid: 1074411 running on host: host1- cannot start] .Failed to start PBS dataservice:[Failed to acquire lock on /var/spool/pbs/datastore/pbs\_dblock. Lock seems to be held by pid: 1074411 running on host: host1 - cannot start] .Failed to start PBS dataservice:[Failed to acquire lock on /var/spool/pbs/datastore/pbs\_dblock. Lock seems to be held by pid: 1074411 running on host: host1 - cannot start] .Failed to start PBS dataservice:[Failed to acquire lock on /var/spool/pbs/datastore/pbs\_dblock. Lock seems to be held by pid: 1074411 running on host: host1 - cannot start] continuing in background. PBS server [root@host1 datastore]# ---
**Author:** ![mkaro](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.openpbs.org/mkaro/32/85_2.png) [@mkaro](https://community.openpbs.org/u/mkaro)\ **Post date:** [March 19, 2018, 5:49pm UTC](https://community.openpbs.org/t/failed-to-start-pbs-dataservice-lock-seems-to-be-held/899/4 "2018-03-19T17:49:42Z")
Please run the following command: sudo /opt/pbs/sbin/pbs\_ds\_monitor check Run it once with PBS running and once with PBS stopped. Please capture the return code (echo $?) and any output produced. ---
**Author:** ![Source](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.openpbs.org/source/32/756_2.png) [@Source](https://community.openpbs.org/u/Source)\ **Post date:** [March 25, 2018, 8:43am UTC](https://community.openpbs.org/t/failed-to-start-pbs-dataservice-lock-seems-to-be-held/899/5 "2018-03-25T08:43:02Z")
did you try rm /tmp/.s.postgresql.15007\*. if theses file exists, you need to delete it manually as well as pbs\_dblock file in $PBS\_HOME/databases Also make sure the permission of /tmp is 1777 hope it helps ---
**Author:** ![hsnsm](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.openpbs.org/hsnsm/32/368_2.png) [@hsnsm](https://community.openpbs.org/u/hsnsm)\ **Post date:** [January 17, 2021, 8:52am UTC](https://community.openpbs.org/t/failed-to-start-pbs-dataservice-lock-seems-to-be-held/899/6 "2021-01-17T08:52:02Z")
Thank you! It worked by deleting the files and changing the owner of “/tmp” to root and permissions to 777. ---
**Author:** ![mkaro](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.openpbs.org/mkaro/32/85_2.png) [@mkaro](https://community.openpbs.org/u/mkaro)\ **Post date:** [January 17, 2021, 2:18pm UTC](https://community.openpbs.org/t/failed-to-start-pbs-dataservice-lock-seems-to-be-held/899/7 "2021-01-17T14:18:04Z")
The permissions of tmp should be 1777, rather than 0777. The “sticky bit” should be set on temporary directories.