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Description of problem: During powering off the VM's could see qemu-kvm getting crashed. Also was running some random IO on the VM's. Version-Release number of selected component (if applicable): qemu-kvm-rhev-2.10.0-21.el7_5.1.x86_64 libvirt-daemon-kvm-3.9.0-14.el7_5.2.x86_64 qemu-kvm-common-rhev-2.10.0-21.el7_5.1.x86_64 redhat-release-virtualization-host-4.2-3.0.el7.x86_64 How reproducible: 1/1 Steps to Reproduce: 1. HostedEngine deployed on top of VDO volumes 2. Create multiple vm's and perform IO operation's on it 3. Stopped VM's Actual results: Saw a qemu-kvm crash Expected results: Should not see crash Additional info: 1. 3 node cluster 2. [root@rhsqa-grafton7-nic2 yum.repos.d]# gluster volume info Volume Name: VDO_Test Type: Replicate Volume ID: b8f6808f-3d6f-4d6d-af8f-f9857ab01a5e Status: Started Snapshot Count: 0 Number of Bricks: 1 x 3 = 3 Transport-type: tcp Bricks: Brick1: 10.70.45.29:/gluster_bricks/VDO_Test/VDO_Test Brick2: 10.70.45.30:/gluster_bricks/VDO_Test/VDO_Test Brick3: 10.70.45.31:/gluster_bricks/VDO_Test/VDO_Test Options Reconfigured: cluster.granular-entry-heal: enable performance.strict-o-direct: on network.ping-timeout: 30 storage.owner-gid: 36 storage.owner-uid: 36 user.cifs: off features.shard: on cluster.shd-wait-qlength: 10000 cluster.shd-max-threads: 8 cluster.locking-scheme: granular cluster.data-self-heal-algorithm: full cluster.server-quorum-type: server cluster.quorum-type: auto cluster.eager-lock: enable network.remote-dio: off performance.low-prio-threads: 32 performance.io-cache: off performance.read-ahead: off performance.quick-read: off transport.address-family: inet nfs.disable: on performance.client-io-threads: off Volume Name: data Type: Replicate Volume ID: c5fce34a-62fd-4ec7-ad79-a820c2d8ebde Status: Started Snapshot Count: 0 Number of Bricks: 1 x 3 = 3 Transport-type: tcp Bricks: Brick1: 10.70.45.29:/gluster_bricks/data/data Brick2: 10.70.45.30:/gluster_bricks/data/data Brick3: 10.70.45.31:/gluster_bricks/data/data Options Reconfigured: cluster.granular-entry-heal: enable performance.strict-o-direct: on network.ping-timeout: 30 storage.owner-gid: 36 storage.owner-uid: 36 user.cifs: off features.shard: on cluster.shd-wait-qlength: 10000 cluster.shd-max-threads: 8 cluster.locking-scheme: granular cluster.data-self-heal-algorithm: full cluster.server-quorum-type: server cluster.quorum-type: auto cluster.eager-lock: enable network.remote-dio: off performance.low-prio-threads: 32 performance.io-cache: off performance.read-ahead: off performance.quick-read: off transport.address-family: inet nfs.disable: on performance.client-io-threads: off Volume Name: engine Type: Replicate Volume ID: 528b01a9-d780-440a-a75c-d5928223d6d6 Status: Started Snapshot Count: 0 Number of Bricks: 1 x 3 = 3 Transport-type: tcp Bricks: Brick1: 10.70.45.29:/gluster_bricks/engine/engine Brick2: 10.70.45.30:/gluster_bricks/engine/engine Brick3: 10.70.45.31:/gluster_bricks/engine/engine Options Reconfigured: cluster.granular-entry-heal: enable performance.strict-o-direct: on network.ping-timeout: 30 storage.owner-gid: 36 storage.owner-uid: 36 user.cifs: off features.shard: on cluster.shd-wait-qlength: 10000 cluster.shd-max-threads: 8 cluster.locking-scheme: granular cluster.data-self-heal-algorithm: full cluster.server-quorum-type: server cluster.quorum-type: auto cluster.eager-lock: enable network.remote-dio: off performance.low-prio-threads: 32 performance.io-cache: off performance.read-ahead: off performance.quick-read: off transport.address-family: inet nfs.disable: on performance.client-io-threads: off Volume Name: vmstore Type: Replicate Volume ID: 1bee697d-dcf8-4358-94d4-61fac6aabddc Status: Started Snapshot Count: 0 Number of Bricks: 1 x 3 = 3 Transport-type: tcp Bricks: Brick1: 10.70.45.29:/gluster_bricks/vmstore/vmstore Brick2: 10.70.45.30:/gluster_bricks/vmstore/vmstore Brick3: 10.70.45.31:/gluster_bricks/vmstore/vmstore Options Reconfigured: diagnostics.count-fop-hits: on diagnostics.latency-measurement: on cluster.granular-entry-heal: enable performance.strict-o-direct: on network.ping-timeout: 30 storage.owner-gid: 36 storage.owner-uid: 36 user.cifs: off features.shard: on cluster.shd-wait-qlength: 10000 cluster.shd-max-threads: 8 cluster.locking-scheme: granular cluster.data-self-heal-algorithm: full cluster.server-quorum-type: server cluster.quorum-type: auto cluster.eager-lock: enable network.remote-dio: off performance.low-prio-threads: 32 performance.io-cache: off performance.read-ahead: off performance.quick-read: off transport.address-family: inet nfs.disable: on performance.client-io-threads: off