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Issue with Centos/Ubuntu instance on shared file system

I have a multi-node openstack juno configuration. And I have implemented shared file system using this link. Launching of Cirros image is successful but when I am trying to launch Centos/Ubuntu instances, it is giving this error : http://imgur.com/gallery/rYTMOG5/new . Syslog:

Dec 22 10:46:39 compute kernel: [ 6048.421836] qbr93df8234-f1: port 2(tap93df8234-f1) entered disabled state Dec 22 10:46:39 compute kernel: [ 6048.422149] device tap93df8234-f1 left promiscuous mode Dec 22 10:46:39 compute kernel: [ 6048.422161] qbr93df8234-f1: port 2(tap93df8234-f1) entered disabled state Dec 22 10:46:39 compute kernel: [ 6048.969920] type=1400 audit(1450799199.680:30): apparmor="STATUS" operation="profile_remove" profile="unconfined" name="libvirt-904827d4-c626-412d-ab9b-231e9d4e2dd5" pid=14546 comm="apparmor_parser" Dec 22 10:46:39 compute kernel: [ 6049.053370] qbr93df8234-f1: port 1(qvb93df8234-f1) entered disabled state Dec 22 10:46:39 compute ovs-vsctl: ovs|00001|vsctl|INFO|Called as /usr/bin/ovs-vsctl --timeout=120 -- --if-exists del-port br-int qvo93df8234-f1 Dec 22 10:46:41 compute ntpd[2836]: Deleting interface #30 tap93df8234-f1, fe80::fc16:3eff:fe94:ac6c#123, interface stats: received=0, sent=0, dropped=0, active_time=4752 secs Dec 22 10:46:41 compute ntpd[2836]: Deleting interface #29 qbr93df8234-f1, fe80::6418:e8ff:fec9:5696#123, interface stats: received=0, sent=0, dropped=0, active_time=4752 secs Dec 22 10:46:41 compute ntpd[2836]: Deleting interface #28 qvb93df8234-f1, fe80::60fe:3dff:fe70:7d2e#123, interface stats: received=0, sent=0, dropped=0, active_time=4752 secs Dec 22 10:46:41 compute ntpd[2836]: Deleting interface #27 qvo93df8234-f1, fe80::f86f:feff:fe31:33f4#123, interface stats: received=0, sent=0, dropped=0, active_time=4752 secs Dec 22 10:46:41 compute ntpd[2836]: peers refreshed Dec 22 10:47:47 compute kernel: [ 6117.128425] nbd13: p1 p2 Dec 22 10:47:48 compute kernel: [ 6117.527676] EXT4-fs (nbd13): VFS: Can't find ext4 filesystem Dec 22 10:47:48 compute kernel: [ 6117.527786] EXT4-fs (nbd13): VFS: Can't find ext4 filesystem Dec 22 10:47:48 compute kernel: [ 6117.527845] EXT4-fs (nbd13): VFS: Can't find ext4 filesystem Dec 22 10:47:48 compute kernel: [ 6117.528300] FAT-fs (nbd13): invalid media value (0x00) Dec 22 10:47:48 compute kernel: [ 6117.528330] FAT-fs (nbd13): Can't find a valid FAT filesystem Dec 22 10:47:48 compute kernel: [ 6117.606319] block nbd13: NBD_DISCONNECT Dec 22 10:47:48 compute kernel: [ 6117.606465] block nbd13: Unexpected reply (ffff88022b4cbc78) Dec 22 10:47:48 compute kernel: [ 6117.606533] block nbd13: queue cleared Dec 22 10:47:49 compute kernel: [ 6118.455008] IPv6: ADDRCONF(NETDEV_UP): qvb5827dc44-a4: link is not ready Dec 22 10:47:49 compute kernel: [ 6118.517077] device qvb5827dc44-a4 entered promiscuous mode Dec 22 10:47:49 compute kernel: [ 6118.578878] IPv6: ADDRCONF(NETDEV_CHANGE): qvb5827dc44-a4: link becomes ready Dec 22 10:47:49 compute kernel: [ 6118.641081] device qvo5827dc44-a4 entered promiscuous mode Dec 22 10:47:49 compute kernel: [ 6118.764868] qbr5827dc44-a4: port 1(qvb5827dc44-a4) entered forwarding state Dec 22 10:47:49 compute kernel: [ 6118.764878] qbr5827dc44-a4: port 1(qvb5827dc44-a4) entered forwarding state Dec 22 10:47:49 compute ovs-vsctl: ovs|00001|vsctl|INFO|Called as /usr/bin/ovs-vsctl --timeout=120 -- --if-exists del-port qvo5827dc44-a4 -- add-port br-int qvo5827dc44-a4 -- set Interface qvo5827dc44-a4 external-ids:iface-id=5827dc44-a459-444d-abc6-5e04ed79d9a5 external-ids:iface-status=active external-ids:attached-mac=fa:16:3e:09:e4:a5 external-ids:vm-uuid=7b41c9f0-0b18-4711-be91-ab17cb902d9f Dec 22 10:47:49 compute kernel: [ 6119.241500] type=1400 audit(1450799269.952:31): apparmor="STATUS" operation="profile_load" profile="unconfined" name="libvirt-7b41c9f0-0b18-4711-be91-ab17cb902d9f" pid=14938 comm="apparmor_parser" Dec 22 10:47:50 compute kernel: [ 6119.300061] device tap5827dc44-a4 entered promiscuous mode Dec 22 10:47:50 compute kernel: [ 6119.316124] qbr5827dc44-a4: port 2(tap5827dc44-a4) entered forwarding state Dec 22 10:47:50 compute kernel: [ 6119.316131] qbr5827dc44-a4: port 2(tap5827dc44-a4) entered forwarding state Dec 22 10:47:50 compute ovs-vsctl: ovs|00001|vsctl|INFO|Called as /usr/bin/ovs-vsctl --timeout=10 set Port qvo5827dc44-a4 tag=2 Dec 22 10:47:50 compute kernel: [ 6120.192353] kvm: zapping shadow pages for mmio generation wraparound Dec 22 10:47:53 compute ntpd[2836]: Listen normally on 31 qvb5827dc44-a4 fe80::18e9:ebff:fecd:cbec UDP 123 Dec 22 10:47:53 compute ntpd[2836]: Listen normally on 32 tap5827dc44-a4 fe80::fc16:3eff:fe09:e4a5 UDP 123 Dec 22 10:47:53 compute ntpd[2836]: Listen normally on 33 qvo5827dc44-a4 fe80::a44f:82ff:fe03:1ebb UDP 123 Dec 22 10:47:53 compute ntpd[2836]: Listen normally on 34 qbr5827dc44-a4 fe80::ec5f:7ff:fe18:51d1 UDP 123 Dec 22 10:47:53 compute ntpd[2836]: peers refreshed Dec 22 10:47:53 compute ntpd[2836]: new interface(s) found: waking up resolver