ACS4.4.0 and Xenserver 6.2 all patched.
Here is the error message for a failing snapshot 2014-11-18 10:41:53,705 INFO [o.a.c.f.j.i.AsyncJobMonitor] (API-Job-Executor-1:ctx-2149b75d job-1186) Add job-1186 into job monitoring 2014-11-18 10:41:53,707 DEBUG [o.a.c.f.j.i.AsyncJobManagerImpl] (API-Job-Executor-1:ctx-2149b75d job-1186) Executing AsyncJobVO {id:1186, userId: 3, accountId: 2, instanceType: Snapshot, instanceId: 1, cmd: org.apache.cloudstack.api.command.user.snapshot.CreateSnapshotCmd, cmdInfo: {"id":"1","response":"json","sessionkey":"piP4PlGoqRRvl5qkhOrYaxtMPGI\u003d" ,"ctxDetails":"{\"com.cloud.storage.Snapshot\":\"b44be7af-bc61-4753-9ea9-90c b262876e7\",\"com.cloud.storage.Volume\":\"13b90ebc-f408-4298-b4b7-7d2f5fb8a 19f\"}","cmdEventType":"SNAPSHOT.CREATE","ctxUserId":"3","httpmethod":"GET", "quiescevm":"false","_":"1416325309501","volumeid":"13b90ebc-f408-4298-b4b7- 7d2f5fb8a19f","uuid":"b44be7af-bc61-4753-9ea9-90cb262876e7","ctxAccountId":" 2","ctxStartEventId":"1882"}, cmdVersion: 0, status: IN_PROGRESS, processStatus: 0, resultCode: 0, result: null, initMsid: 34031122767759, completeMsid: null, lastUpdated: null, lastPolled: null, created: null} 2014-11-18 10:41:53,708 DEBUG [o.a.c.f.j.i.AsyncJobManagerImpl] (catalina-exec-9:ctx-5810441b ctx-d27aafa9) submit async job-1186, details: AsyncJobVO {id:1186, userId: 3, accountId: 2, instanceType: Snapshot, instanceId: 1, cmd: org.apache.cloudstack.api.command.user.snapshot.CreateSnapshotCmd, cmdInfo: {"id":"1","response":"json","sessionkey":"piP4PlGoqRRvl5qkhOrYaxtMPGI\u003d" ,"ctxDetails":"{\"com.cloud.storage.Snapshot\":\"b44be7af-bc61-4753-9ea9-90c b262876e7\",\"com.cloud.storage.Volume\":\"13b90ebc-f408-4298-b4b7-7d2f5fb8a 19f\"}","cmdEventType":"SNAPSHOT.CREATE","ctxUserId":"3","httpmethod":"GET", "quiescevm":"false","_":"1416325309501","volumeid":"13b90ebc-f408-4298-b4b7- 7d2f5fb8a19f","uuid":"b44be7af-bc61-4753-9ea9-90cb262876e7","ctxAccountId":" 2","ctxStartEventId":"1882"}, cmdVersion: 0, status: IN_PROGRESS, processStatus: 0, resultCode: 0, result: null, initMsid: 34031122767759, completeMsid: null, lastUpdated: null, lastPolled: null, created: null} 2014-11-18 10:41:53,718 DEBUG [c.c.a.ApiServlet] (catalina-exec-9:ctx-5810441b ctx-d27aafa9) ===END=== 172.16.0.67 -- GET command=createSnapshot&volumeid=13b90ebc-f408-4298-b4b7-7d2f5fb8a19f&quiesce vm=false&response=json&sessionkey=piP4PlGoqRRvl5qkhOrYaxtMPGI%3D&_=141632530 9501 2014-11-18 10:41:53,825 INFO [o.a.c.a.c.u.s.CreateSnapshotCmd] (API-Job-Executor-1:ctx-2149b75d job-1186 ctx-e45c0ae3) VOLSS: createSnapshotCmd starts:1416325313825 2014-11-18 10:41:53,869 DEBUG [o.a.c.f.j.i.JobSerializerHelper] (API-Job-Executor-1:ctx-2149b75d job-1186 ctx-e45c0ae3) Job GSON Builder initialized. 2014-11-18 10:41:53,884 DEBUG [o.a.c.f.j.i.AsyncJobManagerImpl] (API-Job-Executor-1:ctx-2149b75d job-1186 ctx-e45c0ae3) Sync job-1188 execution on object VmWorkJobQueue.21 2014-11-18 10:41:53,901 WARN [c.c.u.d.Merovingian2] (API-Job-Executor-1:ctx-2149b75d job-1186 ctx-e45c0ae3) Was unable to find lock for the key vm_instance21 and thread id 1028777108 2014-11-18 10:41:56,337 DEBUG [c.c.a.m.AgentManagerImpl] (AgentManager-Handler-12:null) SeqA 17-8920: Processing Seq 17-8920: { Cmd , MgmtId: -1, via: 17, Ver: v1, Flags: 11, [{"com.cloud.agent.api.ConsoleProxyLoadReportCommand":{"_proxyVmId":12,"_loa dInfo":"{\n \"connections\": []\n}","wait":0}}] } 2014-11-18 10:41:56,348 DEBUG [c.c.a.m.AgentManagerImpl] (AgentManager-Handler-12:null) SeqA 17-8920: Sending Seq 17-8920: { Ans: , MgmtId: 34031122767759, via: 17, Ver: v1, Flags: 100010, [{"com.cloud.agent.api.AgentControlAnswer":{"result":true,"wait":0}}] } 2014-11-18 10:41:56,962 DEBUG [c.c.a.ApiServlet] (catalina-exec-10:ctx-bab8a7c7) ===START=== 172.16.0.67 -- GET command=queryAsyncJobResult&jobId=8189879c-21d0-4905-a795-d88f41aae501&respo nse=json&sessionkey=piP4PlGoqRRvl5qkhOrYaxtMPGI%3D&_=1416325313043 2014-11-18 10:41:57,048 DEBUG [c.c.a.ApiServlet] (catalina-exec-10:ctx-bab8a7c7 ctx-bfc78b1f) ===END=== 172.16.0.67 -- GET command=queryAsyncJobResult&jobId=8189879c-21d0-4905-a795-d88f41aae501&respo nse=json&sessionkey=piP4PlGoqRRvl5qkhOrYaxtMPGI%3D&_=1416325313043 2014-11-18 10:41:57,205 DEBUG [c.c.s.StatsCollector] (StatsCollector-4:ctx-7ae0471e) AutoScaling Monitor is running... 2014-11-18 10:41:59,980 DEBUG [c.c.a.ApiServlet] (catalina-exec-13:ctx-42c503da) ===START=== 172.16.0.67 -- GET command=queryAsyncJobResult&jobId=8189879c-21d0-4905-a795-d88f41aae501&respo nse=json&sessionkey=piP4PlGoqRRvl5qkhOrYaxtMPGI%3D&_=1416325316042 2014-11-18 10:42:00,048 DEBUG [c.c.a.ApiServlet] (catalina-exec-13:ctx-42c503da ctx-3f73ec88) ===END=== 172.16.0.67 -- GET command=queryAsyncJobResult&jobId=8189879c-21d0-4905-a795-d88f41aae501&respo nse=json&sessionkey=piP4PlGoqRRvl5qkhOrYaxtMPGI%3D&_=1416325316042 2014-11-18 10:42:02,965 DEBUG [c.c.a.ApiServlet] (catalina-exec-3:ctx-50d2cd68) ===START=== 172.16.0.67 -- GET command=queryAsyncJobResult&jobId=8189879c-21d0-4905-a795-d88f41aae501&respo nse=json&sessionkey=piP4PlGoqRRvl5qkhOrYaxtMPGI%3D&_=1416325319041 2014-11-18 10:42:03,035 DEBUG [c.c.a.ApiServlet] (catalina-exec-3:ctx-50d2cd68 ctx-da977302) ===END=== 172.16.0.67 -- GET command=queryAsyncJobResult&jobId=8189879c-21d0-4905-a795-d88f41aae501&respo nse=json&sessionkey=piP4PlGoqRRvl5qkhOrYaxtMPGI%3D&_=1416325319041 2014-11-18 10:42:05,963 DEBUG [c.c.a.ApiServlet] (catalina-exec-14:ctx-5c860177) ===START=== 172.16.0.67 -- GET command=queryAsyncJobResult&jobId=8189879c-21d0-4905-a795-d88f41aae501&respo nse=json&sessionkey=piP4PlGoqRRvl5qkhOrYaxtMPGI%3D&_=1416325322041 2014-11-18 10:42:06,034 DEBUG [c.c.a.ApiServlet] (catalina-exec-14:ctx-5c860177 ctx-5db1d308) ===END=== 172.16.0.67 -- GET command=queryAsyncJobResult&jobId=8189879c-21d0-4905-a795-d88f41aae501&respo nse=json&sessionkey=piP4PlGoqRRvl5qkhOrYaxtMPGI%3D&_=1416325322041 2014-11-18 10:42:06,072 DEBUG [c.c.n.r.VirtualNetworkApplianceManagerImpl] (RouterStatusMonitor-1:ctx-4b419eda) Found 0 routers to update status. 2014-11-18 10:42:06,076 DEBUG [c.c.n.r.VirtualNetworkApplianceManagerImpl] (RouterStatusMonitor-1:ctx-4b419eda) Found 0 networks to update RvR status. 2014-11-18 10:42:06,229 DEBUG [c.c.d.DeploymentPlanningManagerImpl] (HostReservationReleaseChecker:ctx-74937272) Checking if any host reservation can be released ... 2014-11-18 10:42:06,242 DEBUG [c.c.d.DeploymentPlanningManagerImpl] (HostReservationReleaseChecker:ctx-74937272) Done running HostReservationReleaseChecker ... 2014-11-18 10:42:06,330 DEBUG [c.c.a.AlertManagerImpl] (CapacityChecker:ctx-112e4df3) Running Capacity Checker ... 2014-11-18 10:42:06,330 DEBUG [c.c.a.AlertManagerImpl] (CapacityChecker:ctx-112e4df3) recalculating system capacity 2014-11-18 10:42:06,330 DEBUG [c.c.a.AlertManagerImpl] (CapacityChecker:ctx-112e4df3) Executing cpu/ram capacity update 2014-11-18 10:42:06,340 DEBUG [c.c.a.m.AgentManagerImpl] (AgentManager-Handler-14:null) SeqA 17-8921: Processing Seq 17-8921: { Cmd , MgmtId: -1, via: 17, Ver: v1, Flags: 11, [{"com.cloud.agent.api.ConsoleProxyLoadReportCommand":{"_proxyVmId":12,"_loa dInfo":"{\n \"connections\": []\n}","wait":0}}] } 2014-11-18 10:42:06,343 DEBUG [c.c.c.CapacityManagerImpl] (CapacityChecker:ctx-112e4df3) Found 3 VMs on host 1 2014-11-18 10:42:06,352 DEBUG [c.c.a.m.AgentManagerImpl] (AgentManager-Handler-14:null) SeqA 17-8921: Sending Seq 17-8921: { Ans: , MgmtId: 34031122767759, via: 17, Ver: v1, Flags: 100010, [{"com.cloud.agent.api.AgentControlAnswer":{"result":true,"wait":0}}] } 2014-11-18 10:42:06,355 DEBUG [c.c.c.CapacityManagerImpl] (CapacityChecker:ctx-112e4df3) Found 0 VM, not running on host 1 2014-11-18 10:42:06,357 DEBUG [c.c.c.CapacityManagerImpl] (CapacityChecker:ctx-112e4df3) No need to calibrate cpu capacity, host:1 usedCpu: 2000 reservedCpu: 0 2014-11-18 10:42:06,357 DEBUG [c.c.c.CapacityManagerImpl] (CapacityChecker:ctx-112e4df3) No need to calibrate memory capacity, host:1 usedMem: 1744830464 reservedMem: 0 2014-11-18 10:42:06,382 DEBUG [c.c.c.CapacityManagerImpl] (CapacityChecker:ctx-112e4df3) Found 2 VMs on host 4 2014-11-18 10:42:06,403 DEBUG [c.c.c.CapacityManagerImpl] (CapacityChecker:ctx-112e4df3) Found 0 VM, not running on host 4 2014-11-18 10:42:06,411 DEBUG [c.c.c.CapacityManagerImpl] (CapacityChecker:ctx-112e4df3) No need to calibrate cpu capacity, host:4 usedCpu: 1500 reservedCpu: 0 2014-11-18 10:42:06,412 DEBUG [c.c.c.CapacityManagerImpl] (CapacityChecker:ctx-112e4df3) No need to calibrate memory capacity, host:4 usedMem: 2147483648 reservedMem: 0 2014-11-18 10:42:06,420 DEBUG [c.c.a.AlertManagerImpl] (CapacityChecker:ctx-112e4df3) Done executing cpu/ram capacity update 2014-11-18 10:42:06,420 DEBUG [c.c.a.AlertManagerImpl] (CapacityChecker:ctx-112e4df3) Executing storage capacity update 2014-11-18 10:42:06,438 DEBUG [c.c.s.StorageManagerImpl] (CapacityChecker:ctx-112e4df3) Found storage pool HP-MSA1000-1 of type PreSetup 2014-11-18 10:42:06,438 DEBUG [c.c.s.StorageManagerImpl] (CapacityChecker:ctx-112e4df3) Total over provisioned capacity of the pool HP-MSA1000-1 id: 1 is 1825348517888 2014-11-18 10:42:06,452 DEBUG [c.c.s.StorageManagerImpl] (CapacityChecker:ctx-112e4df3) Successfully set Capacity - 1825348517888 for capacity type - 3 , DataCenterId - 1, HostOrPoolId - 1, PodId 1 2014-11-18 10:42:06,467 DEBUG [c.c.s.StorageManagerImpl] (CapacityChecker:ctx-112e4df3) Found storage pool HP-MSA1000-2 of type PreSetup 2014-11-18 10:42:06,467 DEBUG [c.c.s.StorageManagerImpl] (CapacityChecker:ctx-112e4df3) Total over provisioned capacity of the pool HP-MSA1000-2 id: 3 is 1698189803520 2014-11-18 10:42:06,467 DEBUG [c.c.s.StorageManagerImpl] (CapacityChecker:ctx-112e4df3) Successfully set Capacity - 1698189803520 for capacity type - 3 , DataCenterId - 1, HostOrPoolId - 3, PodId 1 2014-11-18 10:42:06,467 DEBUG [c.c.a.AlertManagerImpl] (CapacityChecker:ctx-112e4df3) Done executing storage capacity update 2014-11-18 10:42:06,467 DEBUG [c.c.a.AlertManagerImpl] (CapacityChecker:ctx-112e4df3) Executing capacity updates for public ip and Vlans 2014-11-18 10:42:06,519 DEBUG [c.c.a.AlertManagerImpl] (CapacityChecker:ctx-112e4df3) Done capacity updates for public ip and Vlans 2014-11-18 10:42:06,519 DEBUG [c.c.a.AlertManagerImpl] (CapacityChecker:ctx-112e4df3) Executing capacity updates for private ip 2014-11-18 10:42:06,542 DEBUG [c.c.a.AlertManagerImpl] (CapacityChecker:ctx-112e4df3) Done executing capacity updates for private ip 2014-11-18 10:42:06,542 DEBUG [c.c.a.AlertManagerImpl] (CapacityChecker:ctx-112e4df3) Done recalculating system capacity 2014-11-18 10:42:06,606 DEBUG [c.c.a.AlertManagerImpl] (CapacityChecker:ctx-112e4df3) Done running Capacity Checker ...2014-11-18 10:42:07,036 DEBUG [c.c.s.StatsCollector] (StatsCollector-3:ctx-17b26d8a) StorageCollector is running... 2014-11-18 10:42:07,114 DEBUG [c.c.a.t.Request] (StatsCollector-3:ctx-17b26d8a) Seq 23-9145121993329214568: Received: { Ans: , MgmtId: 34031122767759, via: 23, Ver: v1, Flags: 10, { GetStorageStatsAnswer } } 2014-11-18 10:42:07,123 DEBUG [c.c.a.m.ClusteredAgentAttache] (StatsCollector-3:ctx-17b26d8a) Seq 4-8070169057271221486: Forwarding null to 78036335168611 2014-11-18 10:42:08,492 DEBUG [c.c.a.t.Request] (StatsCollector-3:ctx-17b26d8a) Seq 4-8070169057271221486: Received: { Ans: , MgmtId: 34031122767759, via: 4, Ver: v1, Flags: 10, { GetStorageStatsAnswer } } 2014-11-18 10:42:08,501 DEBUG [c.c.a.m.ClusteredAgentAttache] (StatsCollector-3:ctx-17b26d8a) Seq 1-6979172047540718937: Forwarding null to 78036335168611 2014-11-18 10:42:08,899 DEBUG [c.c.a.t.Request] (StatsCollector-3:ctx-17b26d8a) Seq 1-6979172047540718937: Received: { Ans: , MgmtId: 34031122767759, via: 1, Ver: v1, Flags: 10, { GetStorageStatsAnswer } } 2014-11-18 10:42:09,036 DEBUG [c.c.a.ApiResponseHelper] (API-Job-Executor-1:ctx-2149b75d job-1186 ctx-e45c0ae3) Unable to find info for image store snapshot with uuid b44be7af-bc61-4753-9ea9-90cb262876e7 2014-11-18 10:42:09,042 DEBUG [o.a.c.f.j.i.AsyncJobManagerImpl] (API-Job-Executor-1:ctx-2149b75d job-1186 ctx-e45c0ae3) Complete async job-1186, jobStatus: SUCCEEDED, resultCode: 0, result: org.apache.cloudstack.api.response.SnapshotResponse/snapshot/{"id":"b44be7af -bc61-4753-9ea9-90cb262876e7","account":"dasia","domainid":"ab8d2a81-e86d-44 b6-ba90-97a87cbd58ee","domain":"Dasia.Net","snapshottype":"MANUAL","volumeid ":"13b90ebc-f408-4298-b4b7-7d2f5fb8a19f","volumename":"ROOT-21","volumetype" :"ROOT","created":"2014-11-18T10:41:53-0500","name":"dzabmon_ROOT-21_2014111 8154153","intervaltype":"MANUAL","state":"Error","tags":[],"revertable":fals e} 2014-11-18 10:42:09,046 DEBUG [c.c.a.ApiServlet] (catalina-exec-11:ctx-5d57011e) ===START=== 172.16.0.67 -- GET command=queryAsyncJobResult&jobId=8189879c-21d0-4905-a795-d88f41aae501&respo nse=json&sessionkey=piP4PlGoqRRvl5qkhOrYaxtMPGI%3D&_=1416325325041 2014-11-18 10:42:09,072 DEBUG [o.a.c.f.j.i.AsyncJobManagerImpl] (API-Job-Executor-1:ctx-2149b75d job-1186) Done executing org.apache.cloudstack.api.command.user.snapshot.CreateSnapshotCmd for job-1186 2014-11-18 10:42:09,090 INFO [o.a.c.f.j.i.AsyncJobMonitor] (API-Job-Executor-1:ctx-2149b75d job-1186) Remove job-1186 from job monitoring Catalina.out Add job-1186 into job monitoring INFO [o.a.c.a.c.u.s.CreateSnapshotCmd] (API-Job-Executor-1:ctx-2149b75d job-1186 ctx-e45c0ae3) VOLSS: createSnapshotCmd starts:1416325313825 WARN [c.c.u.d.Merovingian2] (API-Job-Executor-1:ctx-2149b75d job-1186 ctx-e45c0ae3) Was unable to find lock for the key vm_instance21 and thread id 1028777108 INFO [o.a.c.f.j.i.AsyncJobMonitor] (API-Job-Executor-1:ctx-2149b75d job-1186) Remove job-1186 from job monitoring CONFIDENTIAL: This electronic mail, including any attachment(s) may contain information that is privileged, confidential, and/or otherwise protected from disclosure to anyone other than its intended recipient(s). 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