shared volume mount fails on moving back to mounted node after server mounts on another node

[c-raghav]

Steps to recreate: Create a volume docker volume create -d hpe --name m_conf_delay_vol1 -o size=1

Mount on node 1

now move on node2, mount it several times , it mounts

move back to node 1 and mount again it fails

Node 1

Mount 1 ------> Move to Node2 Mount 2 Mount 3 Mount 4

Mount 5 <----Move back to Node1 and mount fails

Logs attached

[root@ecostor-b14 ~]# docker run -it -v m_conf_delay_rcvol1:/data2 --name c2 --rm busybox /bin/sh /usr/bin/docker-current: Error response from daemon: error while mounting volume '/opt/hpe/data/hpedocker-dm-uuid-mpath-360002ac0000000000100850c000187b7': HPE Docker Volume Plugin Mount Failed: ('exception is : %s', '\n\n RAN: /bin/mount -t ext4 /dev/dm-5 /opt/hpe/data/hpedocker-dm-uuid-mpath-360002ac0000000000100850c000187b7\n\n STDOUT:\n\n\n STDERR:\nmount: /opt/hpe/data/hpedocker-dm-uuid-mpath-360002ac0000000000100850c000187b7: /dev/mapper/360002ac0000000000100850c000187b7 already mounted on /opt/hpe/data/hpedocker-dm-uuid-mpath-360002ac0000000000100850c000187b7.\n'). [root@ecostor-b14 ~]# multipath -ll 360002ac00000000001008508000187b7 dm-3 3PARdata,VV size=1.0G features='2 queue_if_no_path retain_attached_hw_handler' hwhandler='1 alua' wp=rw -+- policy='round-robin 0' prio=50 status=active - 1:0:5:0 sdb 8:16 active ready running 360002ac0000000000100850c000187b7 dm-5 3PARdata,VV size=1.0G features='2 queue_if_no_path retain_attached_hw_handler' hwhandler='1 alua' wp=rw -+- policy='round-robin 0' prio=50 status=active - 1:0:5:2 sdd 8:48 active ready running 360002ac00000000001008509000187b7 dm-4 3PARdata,VV size=16G features='2 queue_if_no_path retain_attached_hw_handler' hwhandler='1 alua' wp=rw -+- policy='round-robin 0' prio=50 status=active - 1:0:5:1 sdc 8:32 active ready running You have new mail in /var/spool/mail/root [root@ecostor-b14 ~]#