[
https://issues.apache.org/jira/browse/CLOUDSTACK-3769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Kishan Kavala resolved CLOUDSTACK-3769.
---------------------------------------
Resolution: Fixed
> [Object_Store_Refactor] Create snapshot failed when tried for more than once
> ----------------------------------------------------------------------------
>
> Key: CLOUDSTACK-3769
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-3769
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Components: Snapshot, Storage Controller, XenServer
> Affects Versions: 4.2.0
> Environment: Latest build from ACS 4.2 branch
> Storage: NFS for both primary and secondary
> Reporter: Sanjeev N
> Assignee: Kishan Kavala
> Priority: Critical
> Fix For: 4.2.0
>
> Attachments: management-server.rar
>
>
> [Object_Store_Refactor] Create snapshot failed when tried for more than once
> Steps to reproduce the problem:
> ==========================
> Deploy a Vm with root and data disk.
> Take 1 snapshot of root volume.
> Do some changes to the root volume like create files.
> Take another snapshot of root volume.
> Observations:
> ===========
> Takings 2nd snapshot on the root volume failed with following exceptions:
> 2013-07-24 03:25:21,442 DEBUG [cloud.async.AsyncJobManagerImpl]
> (catalina-exec-1:null) submit async job-42 = [
> df65e67e-7912-4e69-b397-ea7f6bbeeb86 ], details: AsyncJobVO {id:42, userId:
> 2, accountId: 2, sessionKey: null, instanceType: Snapshot, instanceId: 6,
> cmd: org.apache.cloudstack.api.command.user.snapshot.CreateSnapshotCmd,
> cmdOriginator: null, cmdInfo:
> {"id":"6","response":"json","sessionkey":"gxyIuffvqQNym83RCq1S1RkHA1Q\u003d","cmdEventType":"SNAPSHOT.CREATE","ctxUserId":"2","httpmethod":"GET","_":"1374650721318","volumeid":"76802bbc-07a7-4afb-8425-178fe4b5f699","ctxAccountId":"2","ctxStartEventId":"169"},
> cmdVersion: 0, callbackType: 0, callbackAddress: null, status: 0,
> processStatus: 0, resultCode: 0, result: null, initMsid: 6615759585382,
> completeMsid: null, lastUpdated: null, lastPolled: null, created: null}
> 2013-07-24 03:25:21,445 DEBUG [cloud.api.ApiServlet] (catalina-exec-1:null)
> ===END=== 10.146.0.20 -- GET
> command=createSnapshot&volumeid=76802bbc-07a7-4afb-8425-178fe4b5f699&response=json&sessionkey=gxyIuffvqQNym83RCq1S1RkHA1Q%3D&_=1374650721318
> 2013-07-24 03:25:21,448 DEBUG [cloud.async.AsyncJobManagerImpl]
> (Job-Executor-6:job-42 = [ df65e67e-7912-4e69-b397-ea7f6bbeeb86 ]) Executing
> org.apache.cloudstack.api.command.user.snapshot.CreateSnapshotCmd for job-42
> = [ df65e67e-7912-4e69-b397-ea7f6bbeeb86 ]
> 2013-07-24 03:25:21,509 INFO [user.snapshot.CreateSnapshotCmd]
> (Job-Executor-6:job-42 = [ df65e67e-7912-4e69-b397-ea7f6bbeeb86 ]) VOLSS:
> createSnapshotCmd starts:1374650721509
> 2013-07-24 03:25:21,616 DEBUG [agent.transport.Request]
> (Job-Executor-6:job-42 = [ df65e67e-7912-4e69-b397-ea7f6bbeeb86 ]) Seq
> 1-1326448839: Sending { Cmd , MgmtId: 6615759585382, via: 1, Ver: v1, Flags:
> 100011,
> [{"org.apache.cloudstack.storage.command.CreateObjectCommand":{"data":{"org.apache.cloudstack.storage.to.SnapshotObjectTO":{"volume":{"uuid":"76802bbc-07a7-4afb-8425-178fe4b5f699","volumeType":"ROOT","dataStore":{"org.apache.cloudstack.storage.to.PrimaryDataStoreTO":{"uuid":"05820c30-2a0e-33f7-b358-cc9c08864e10","id":2,"poolType":"NetworkFilesystem","host":"10.147.28.7","path":"/export/home/sanjeev/pri_xen_os2","port":2049}},"name":"ROOT-7","size":21474836480,"path":"d91e634e-4eae-4306-8d46-2e587f1f4961","volumeId":14,"vmName":"i-2-7-VM","accountId":2,"format":"VHD","id":14},"parentSnapshotPath":"8ebcb2c7-c728-40be-adbd-5adb3ff26ae8","dataStore":{"org.apache.cloudstack.storage.to.PrimaryDataStoreTO":{"uuid":"05820c30-2a0e-33f7-b358-cc9c08864e10","id":2,"poolType":"NetworkFilesystem","host":"10.147.28.7","path":"/export/home/sanjeev/pri_xen_os2","port":2049}},"vmName":"i-2-7-VM","name":"Delte-snaps_ROOT-7_20130724072521","hypervisorType":"XenServer","id":6}},"wait":0}}]
> }
> 2013-07-24 03:25:21,617 DEBUG [agent.transport.Request]
> (Job-Executor-6:job-42 = [ df65e67e-7912-4e69-b397-ea7f6bbeeb86 ]) Seq
> 1-1326448839: Executing: { Cmd , MgmtId: 6615759585382, via: 1, Ver: v1,
> Flags: 100011,
> [{"org.apache.cloudstack.storage.command.CreateObjectCommand":{"data":{"org.apache.cloudstack.storage.to.SnapshotObjectTO":{"volume":{"uuid":"76802bbc-07a7-4afb-8425-178fe4b5f699","volumeType":"ROOT","dataStore":{"org.apache.cloudstack.storage.to.PrimaryDataStoreTO":{"uuid":"05820c30-2a0e-33f7-b358-cc9c08864e10","id":2,"poolType":"NetworkFilesystem","host":"10.147.28.7","path":"/export/home/sanjeev/pri_xen_os2","port":2049}},"name":"ROOT-7","size":21474836480,"path":"d91e634e-4eae-4306-8d46-2e587f1f4961","volumeId":14,"vmName":"i-2-7-VM","accountId":2,"format":"VHD","id":14},"parentSnapshotPath":"8ebcb2c7-c728-40be-adbd-5adb3ff26ae8","dataStore":{"org.apache.cloudstack.storage.to.PrimaryDataStoreTO":{"uuid":"05820c30-2a0e-33f7-b358-cc9c08864e10","id":2,"poolType":"NetworkFilesystem","host":"10.147.28.7","path":"/export/home/sanjeev/pri_xen_os2","port":2049}},"vmName":"i-2-7-VM","name":"Delte-snaps_ROOT-7_20130724072521","hypervisorType":"XenServer","id":6}},"wait":0}}]
> }
> 2013-07-24 03:25:21,617 DEBUG [agent.manager.DirectAgentAttache]
> (DirectAgent-119:null) Seq 1-1326448839: Executing request
> 2013-07-24 03:25:23,203 DEBUG [agent.manager.DirectAgentAttache]
> (DirectAgent-119:null) Seq 1-1326448839: Response Received:
> 2013-07-24 03:25:23,204 DEBUG [agent.transport.Request]
> (DirectAgent-119:null) Seq 1-1326448839: Processing: { Ans: , MgmtId:
> 6615759585382, via: 1, Ver: v1, Flags: 10,
> [{"org.apache.cloudstack.storage.command.CreateObjectAnswer":{"data":{"org.apache.cloudstack.storage.to.SnapshotObjectTO":{"path":"27f8a618-d6c7-447f-8a38-930d087757bf","id":0}},"result":true,"wait":0}}]
> }
> 2013-07-24 03:25:23,204 DEBUG [agent.transport.Request]
> (Job-Executor-6:job-42 = [ df65e67e-7912-4e69-b397-ea7f6bbeeb86 ]) Seq
> 1-1326448839: Received: { Ans: , MgmtId: 6615759585382, via: 1, Ver: v1,
> Flags: 10, { CreateObjectAnswer } }
> 2013-07-24 03:25:23,319 DEBUG [storage.motion.AncientDataMotionStrategy]
> (Job-Executor-6:job-42 = [ df65e67e-7912-4e69-b397-ea7f6bbeeb86 ]) copyAsync
> inspecting src type SNAPSHOT copyAsync inspecting dest type SNAPSHOT
> 2013-07-24 03:25:23,428 DEBUG [agent.transport.Request]
> (Job-Executor-6:job-42 = [ df65e67e-7912-4e69-b397-ea7f6bbeeb86 ]) Seq
> 1-1326448840: Sending { Cmd , MgmtId: 6615759585382, via: 1, Ver: v1, Flags:
> 100011,
> [{"org.apache.cloudstack.storage.command.CopyCommand":{"srcTO":{"org.apache.cloudstack.storage.to.SnapshotObjectTO":{"path":"27f8a618-d6c7-447f-8a38-930d087757bf","volume":{"uuid":"76802bbc-07a7-4afb-8425-178fe4b5f699","volumeType":"ROOT","dataStore":{"org.apache.cloudstack.storage.to.PrimaryDataStoreTO":{"uuid":"05820c30-2a0e-33f7-b358-cc9c08864e10","id":2,"poolType":"NetworkFilesystem","host":"10.147.28.7","path":"/export/home/sanjeev/pri_xen_os2","port":2049}},"name":"ROOT-7","size":21474836480,"path":"d91e634e-4eae-4306-8d46-2e587f1f4961","volumeId":14,"vmName":"i-2-7-VM","accountId":2,"format":"VHD","id":14},"parentSnapshotPath":"8ebcb2c7-c728-40be-adbd-5adb3ff26ae8","dataStore":{"org.apache.cloudstack.storage.to.PrimaryDataStoreTO":{"uuid":"05820c30-2a0e-33f7-b358-cc9c08864e10","id":2,"poolType":"NetworkFilesystem","host":"10.147.28.7","path":"/export/home/sanjeev/pri_xen_os2","port":2049}},"vmName":"i-2-7-VM","name":"Delte-snaps_ROOT-7_20130724072521","hypervisorType":"XenServer","id":6}},"destTO":{"org.apache.cloudstack.storage.to.SnapshotObjectTO":{"path":"snapshots/2/14","volume":{"uuid":"76802bbc-07a7-4afb-8425-178fe4b5f699","volumeType":"ROOT","dataStore":{"org.apache.cloudstack.storage.to.PrimaryDataStoreTO":{"uuid":"05820c30-2a0e-33f7-b358-cc9c08864e10","id":2,"poolType":"NetworkFilesystem","host":"10.147.28.7","path":"/export/home/sanjeev/pri_xen_os2","port":2049}},"name":"ROOT-7","size":21474836480,"path":"d91e634e-4eae-4306-8d46-2e587f1f4961","volumeId":14,"vmName":"i-2-7-VM","accountId":2,"format":"VHD","id":14},"parentSnapshotPath":"snapshots/2/14/bb46b02e-22ad-4642-b1cb-7c4fd0bd0aef","dataStore":{"com.cloud.agent.api.to.NfsTO":{"_url":"nfs://10.147.28.7/export/home/sanjeev/sec_xen_os","_role":"Image"}},"vmName":"i-2-7-VM","name":"Delte-snaps_ROOT-7_20130724072521","hypervisorType":"XenServer","id":6}},"executeInSequence":false,"wait":21600}}]
> }
> 2013-07-24 03:25:23,430 DEBUG [agent.transport.Request]
> (Job-Executor-6:job-42 = [ df65e67e-7912-4e69-b397-ea7f6bbeeb86 ]) Seq
> 1-1326448840: Executing: { Cmd , MgmtId: 6615759585382, via: 1, Ver: v1,
> Flags: 100011,
> [{"org.apache.cloudstack.storage.command.CopyCommand":{"srcTO":{"org.apache.cloudstack.storage.to.SnapshotObjectTO":{"path":"27f8a618-d6c7-447f-8a38-930d087757bf","volume":{"uuid":"76802bbc-07a7-4afb-8425-178fe4b5f699","volumeType":"ROOT","dataStore":{"org.apache.cloudstack.storage.to.PrimaryDataStoreTO":{"uuid":"05820c30-2a0e-33f7-b358-cc9c08864e10","id":2,"poolType":"NetworkFilesystem","host":"10.147.28.7","path":"/export/home/sanjeev/pri_xen_os2","port":2049}},"name":"ROOT-7","size":21474836480,"path":"d91e634e-4eae-4306-8d46-2e587f1f4961","volumeId":14,"vmName":"i-2-7-VM","accountId":2,"format":"VHD","id":14},"parentSnapshotPath":"8ebcb2c7-c728-40be-adbd-5adb3ff26ae8","dataStore":{"org.apache.cloudstack.storage.to.PrimaryDataStoreTO":{"uuid":"05820c30-2a0e-33f7-b358-cc9c08864e10","id":2,"poolType":"NetworkFilesystem","host":"10.147.28.7","path":"/export/home/sanjeev/pri_xen_os2","port":2049}},"vmName":"i-2-7-VM","name":"Delte-snaps_ROOT-7_20130724072521","hypervisorType":"XenServer","id":6}},"destTO":{"org.apache.cloudstack.storage.to.SnapshotObjectTO":{"path":"snapshots/2/14","volume":{"uuid":"76802bbc-07a7-4afb-8425-178fe4b5f699","volumeType":"ROOT","dataStore":{"org.apache.cloudstack.storage.to.PrimaryDataStoreTO":{"uuid":"05820c30-2a0e-33f7-b358-cc9c08864e10","id":2,"poolType":"NetworkFilesystem","host":"10.147.28.7","path":"/export/home/sanjeev/pri_xen_os2","port":2049}},"name":"ROOT-7","size":21474836480,"path":"d91e634e-4eae-4306-8d46-2e587f1f4961","volumeId":14,"vmName":"i-2-7-VM","accountId":2,"format":"VHD","id":14},"parentSnapshotPath":"snapshots/2/14/bb46b02e-22ad-4642-b1cb-7c4fd0bd0aef","dataStore":{"com.cloud.agent.api.to.NfsTO":{"_url":"nfs://10.147.28.7/export/home/sanjeev/sec_xen_os","_role":"Image"}},"vmName":"i-2-7-VM","name":"Delte-snaps_ROOT-7_20130724072521","hypervisorType":"XenServer","id":6}},"executeInSequence":false,"wait":21600}}]
> }
> 2013-07-24 03:25:23,430 DEBUG [agent.manager.DirectAgentAttache]
> (DirectAgent-49:null) Seq 1-1326448840: Executing request
> 2013-07-24 03:25:23,982 DEBUG [storage.secondary.SecondaryStorageManagerImpl]
> (secstorage-1:null) Zone 1 is ready to launch secondary storage VM
> 2013-07-24 03:25:24,245 DEBUG [cloud.consoleproxy.ConsoleProxyManagerImpl]
> (consoleproxy-1:null) Zone 1 is ready to launch console proxy
> 2013-07-24 03:25:24,544 DEBUG [cloud.api.ApiServlet] (catalina-exec-16:null)
> ===START=== 10.146.0.20 -- GET
> command=queryAsyncJobResult&jobId=df65e67e-7912-4e69-b397-ea7f6bbeeb86&response=json&sessionkey=gxyIuffvqQNym83RCq1S1RkHA1Q%3D&_=1374650724624
> 2013-07-24 03:25:24,611 DEBUG [cloud.api.ApiServlet] (catalina-exec-16:null)
> ===END=== 10.146.0.20 -- GET
> command=queryAsyncJobResult&jobId=df65e67e-7912-4e69-b397-ea7f6bbeeb86&response=json&sessionkey=gxyIuffvqQNym83RCq1S1RkHA1Q%3D&_=1374650724624
> 2013-07-24 03:25:24,653 DEBUG [cloud.network.ExternalDeviceUsageManagerImpl]
> (ExternalNetworkMonitor-1:null) External devices stats collector is running...
> 2013-07-24 03:25:24,763 DEBUG
> [network.router.VirtualNetworkApplianceManagerImpl] (RouterMonitor-1:null)
> Found 0 running routers.
> 2013-07-24 03:25:24,765 DEBUG
> [network.router.VirtualNetworkApplianceManagerImpl]
> (RouterStatusMonitor-1:null) Found 0 routers to update status.
> 2013-07-24 03:25:24,768 DEBUG
> [network.router.VirtualNetworkApplianceManagerImpl]
> (RouterStatusMonitor-1:null) Found 0 networks to update RvR status.
> 2013-07-24 03:25:24,848 DEBUG
> [network.router.VirtualNetworkApplianceManagerImpl] (RouterMonitor-1:null)
> Found 0 running routers.
> 2013-07-24 03:25:24,859 DEBUG
> [network.router.VirtualNetworkApplianceManagerImpl]
> (RouterStatusMonitor-1:null) Found 0 routers to update status.
> 2013-07-24 03:25:24,861 DEBUG
> [network.router.VirtualNetworkApplianceManagerImpl]
> (RouterStatusMonitor-1:null) Found 0 networks to update RvR status.
> 2013-07-24 03:25:24,966 WARN [xen.resource.CitrixResourceBase]
> (DirectAgent-49:null) Task failed! Task record: uuid:
> fe2ffb5c-69a2-d8ee-4da7-cce570510c86
> nameLabel: Async.host.call_plugin
> nameDescription:
> allowedOperations: []
> currentOperations: {}
> created: Wed Jul 24 03:25:22 EDT 2013
> finished: Wed Jul 24 03:25:22 EDT 2013
> status: failure
> residentOn: com.xensource.xenapi.Host@2d122f30
> progress: 1.0
> type: <none/>
> result:
> errorInfo: [XENAPI_PLUGIN_FAILURE, backupSnapshot, NameError,
> global name 'localMountPointPath' is not defined]
> otherConfig: {}
> subtaskOf: com.xensource.xenapi.Task@aaf13f6f
> subtasks: []
> 2013-07-24 03:25:24,975 WARN [xen.resource.CitrixResourceBase]
> (DirectAgent-49:null) callHostPlugin failed for cmd: backupSnapshot with args
> secondaryStorageMountPath: 10.147.28.7:/export/home/sanjeev/sec_xen_os,
> localMountPoint: /var/run/cloud_mount/c6789378-d1dc-3c93-808d-8c27375483c0,
> backupUuid: 2b36ca41-14ba-493c-bb9c-fa9bedb59015, path: snapshots/2/14,
> prevBackupUuid: snapshots/2/14/bb46b02e-22ad-4642-b1cb-7c4fd0bd0aef,
> snapshotUuid: 27f8a618-d6c7-447f-8a38-930d087757bf, isISCSI: false,
> primaryStorageSRUuid: 667cf98d-5b59-77c5-3cd5-da4b04513888, due to Task
> failed! Task record: uuid:
> fe2ffb5c-69a2-d8ee-4da7-cce570510c86
> nameLabel: Async.host.call_plugin
> nameDescription:
> allowedOperations: []
> currentOperations: {}
> created: Wed Jul 24 03:25:22 EDT 2013
> finished: Wed Jul 24 03:25:22 EDT 2013
> status: failure
> residentOn: com.xensource.xenapi.Host@2d122f30
> progress: 1.0
> type: <none/>
> result:
> errorInfo: [XENAPI_PLUGIN_FAILURE, backupSnapshot, NameError,
> global name 'localMountPointPath' is not defined]
> otherConfig: {}
> subtaskOf: com.xensource.xenapi.Task@aaf13f6f
> subtasks: []
> Task failed! Task record: uuid:
> fe2ffb5c-69a2-d8ee-4da7-cce570510c86
> nameLabel: Async.host.call_plugin
> nameDescription:
> allowedOperations: []
> currentOperations: {}
> created: Wed Jul 24 03:25:22 EDT 2013
> finished: Wed Jul 24 03:25:22 EDT 2013
> status: failure
> residentOn: com.xensource.xenapi.Host@2d122f30
> progress: 1.0
> type: <none/>
> result:
> errorInfo: [XENAPI_PLUGIN_FAILURE, backupSnapshot, NameError,
> global name 'localMountPointPath' is not defined]
> otherConfig: {}
> subtaskOf: com.xensource.xenapi.Task@aaf13f6f
> subtasks: []
> at
> com.cloud.hypervisor.xen.resource.CitrixResourceBase.checkForSuccess(CitrixResourceBase.java:3644)
> at
> com.cloud.hypervisor.xen.resource.CitrixResourceBase.callHostPluginAsync(CitrixResourceBase.java:3958)
> at
> com.cloud.hypervisor.xen.resource.XenServerStorageProcessor.backupSnapshot(XenServerStorageProcessor.java:1161)
> at
> com.cloud.hypervisor.xen.resource.XenServerStorageProcessor.backupSnapshot(XenServerStorageProcessor.java:1340)
> at
> com.cloud.storage.resource.StorageSubsystemCommandHandlerBase.execute(StorageSubsystemCommandHandlerBase.java:84)
> at
> com.cloud.storage.resource.StorageSubsystemCommandHandlerBase.handleStorageCommands(StorageSubsystemCommandHandlerBase.java:49)
> at
> com.cloud.hypervisor.xen.resource.CitrixResourceBase.executeRequest(CitrixResourceBase.java:623)
> at
> com.cloud.hypervisor.xen.resource.XenServer56Resource.executeRequest(XenServer56Resource.java:73)
> at
> com.cloud.hypervisor.xen.resource.XenServer610Resource.executeRequest(XenServer610Resource.java:104)
> at
> com.cloud.agent.manager.DirectAgentAttache$Task.run(DirectAgentAttache.java:186)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
> at java.util.concurrent.FutureTask.run(FutureTask.java:166)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:165)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> at java.lang.Thread.run(Thread.java:679)
> But UI shows the snapshot creation successful even for 2nd snapshot.
> DB entries are as follows:
> ====================
> mysql> select * from snapshots where volume_id=14;
> +----+----------------+------------+-----------+-----------+------------------+----------+------+-----------------------------------+--------------------------------------+---------------+------------------+-------------+---------------------+---------+----------------+----------+------------+--------------+-----------------+---------+-------+
> | id | data_center_id | account_id | domain_id | volume_id | disk_offering_id
> | status | path | name | uuid
> | snapshot_type | type_description | size | created
> | removed | backup_snap_id | swift_id | sechost_id | prev_snap_id |
> hypervisor_type | version | s3_id |
> +----+----------------+------------+-----------+-----------+------------------+----------+------+-----------------------------------+--------------------------------------+---------------+------------------+-------------+---------------------+---------+----------------+----------+------------+--------------+-----------------+---------+-------+
> | 5 | 1 | 2 | 1 | 14 | 1
> | BackedUp | NULL | Delte-snaps_ROOT-7_20130724071710 |
> 10c21e2e-0aaf-4d65-b002-ded1b9afa64b | 0 | MANUAL |
> 21474836480 | 2013-07-24 07:17:10 | NULL | NULL | NULL |
> NULL | NULL | XenServer | 2.2 | NULL |
> | 6 | 1 | 2 | 1 | 14 | 1
> | BackedUp | NULL | Delte-snaps_ROOT-7_20130724072521 |
> 5cdf7485-ac85-4565-8c4e-efb304e25eef | 0 | MANUAL |
> 21474836480 | 2013-07-24 07:25:21 | NULL | NULL | NULL |
> NULL | NULL | XenServer | 2.2 | NULL |
> +----+----------------+------------+-----------+-----------+------------------+----------+------+-----------------------------------+--------------------------------------+---------------+------------------+-------------+---------------------+---------+----------------+----------+------------+--------------+-----------------+---------+-------+
> 2 rows in set (0.00 sec)
> Here volume id 14 is the Root disk of the vm on which parent snapshot was
> created.
> mysql> select * from snapshot_store_ref where snapshot_id in (5,6)\G;
> *************************** 1. row ***************************
> id: 10
> store_id: 1
> snapshot_id: 5
> created: 2013-07-24 07:17:11
> last_updated: NULL
> job_id: NULL
> store_role: Image
> size: 0
> physical_size: 0
> parent_snapshot_id: 0
> install_path: snapshots/2/14/bb46b02e-22ad-4642-b1cb-7c4fd0bd0aef
> state: Ready
> update_count: 2
> ref_cnt: 0
> updated: 2013-07-24 07:18:41
> volume_id: 14
> *************************** 2. row ***************************
> id: 11
> store_id: 2
> snapshot_id: 6
> created: 2013-07-24 07:25:21
> last_updated: NULL
> job_id: NULL
> store_role: Primary
> size: 0
> physical_size: 0
> parent_snapshot_id: 0
> install_path: 27f8a618-d6c7-447f-8a38-930d087757bf
> state: Ready
> update_count: 2
> ref_cnt: 0
> updated: 2013-07-24 07:25:23
> volume_id: 14
> *************************** 3. row ***************************
> id: 12
> store_id: 1
> snapshot_id: 6
> created: 2013-07-24 07:25:23
> last_updated: NULL
> job_id: NULL
> store_role: Image
> size: 0
> physical_size: 0
> parent_snapshot_id: 5
> install_path: snapshots/2/14/null
> state: Ready
> update_count: 2
> ref_cnt: 0
> updated: 2013-07-24 07:25:26
> volume_id: 14
> 3 rows in set (0.00 sec)
> ERROR:
> No query specified
> For the 2nd snapshot we see the Install_pass as "snapshots/2/14/null" . Also
> did not find delta snapshot in the secondary storage in the install_path.
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