GitHub user joan-911 created a discussion: Recurring Instance Creation Failures 
in CloudStack 4.19.3 on XCP-ng 8.2.1 – Management Service Restart Required

Environment Details:

CloudStack Version: 4.19.3
Hypervisor: XCP-ng 8.2.1
Primary Storage: Pre-configured iSCSI on XCP-ng

**Issue Observed:**
All instance creation requests are timing out, and new instances fail to 
deploy. This problem tends to recur every 5–6 days. Once it occurs, restarting 
the management service temporarily resolves the issue.

We would like to know if anyone has faced a similar issue in ACS with XCP-ng. 
Are there any configuration tweaks available to prevent having to restart the 
management service each time?

Additional Information:
Logs related to disk creation are attached for reference.

2025-10-22 10:24:33,667 DEBUG [c.c.a.m.ClusteredAgentAttache] 
(Work-Job-Executor-62:ctx-a00ad243 job-133845/job-133846 ctx-50f38497) 
(logid:13a10f8a) Seq 20-6844627008673079170: Forwarding Seq 
20-6844627008673079170:  { Cmd , MgmtId: 271367514881978, via: 
20(CLD-Z1-XCPH01), Ver: v1, Flags: 100111, 
[{"org.apache.cloudstack.storage.command.CopyCommand":{"srcTO":{"org.apache.cloudstack.storage.to.TemplateObjectTO":{"path":"9f1a2c02-4c9b-4910-b3e8-c1026e42addf","origUrl":"http://download.cloudstack.org/systemvm/4.19/systemvmtemplate-4.19.1-xen.vhd.bz2","uuid":"1036c354-65b7-492f-96fc-848ee19f49ab","id":"380","format":"VHD","accountId":"6","checksum":"{SHA-512}e7df5f0fc04318bf4bf2b28fa0e630cfb3b7cd3f783202382202c8404fc8deaadc5c03e8b0c2137a2fb7d998ee3901e3d94f280587999fee6659399c064b59ea","hvm":"true","displayText":"systemvm-xenserver-4.19.1","imageDataStore":{"org.apache.cloudstack.storage.to.PrimaryDataStoreTO":{"uuid":"CLD-Z1-VOL2","name":"CLD-Z1-VOL2","id":"7","poolType":"PreSetup","ho
 
st":"localhost","path":"/CLD-Z1-VOL2","port":"0","url":"PreSetup://localhost/CLD-Z1-VOL2/?ROLE=Primary&STOREUUID=CLD-Z1-VOL2","isManaged":"false"}},"name":"380-6-45c2d735-1393-3ebb-9b43-21248166660f","size":"(4.88
 GB) 
5242880000","hypervisorType":"XenServer","bootable":"false","uniqueName":"380-6-45c2d735-1393-3ebb-9b43-21248166660f","directDownload":"false","deployAsIs":"false","followRedirects":"true"}},"destTO":{"org.apache.cloudstack.storage.to.VolumeObjectTO":{"uuid":"2cf5fcb9-9570-4263-95ea-98004c0efa98","volumeType":"ROOT","dataStore":{"org.apache.cloudstack.storage.to.PrimaryDataStoreTO":{"uuid":"CLD-Z1-VOL2","name":"CLD-Z1-VOL2","id":"7","poolType":"PreSetup","host":"localhost","path":"/CLD-Z1-VOL2","port":"0","url":"PreSetup://localhost/CLD-Z1-VOL2/?ROLE=Primary&STOREUUID=CLD-Z1-VOL2","isManaged":"false"}},"name":"ROOT-15673","size":"(4.88
 GB) 
5242880000","volumeId":"6223","vmName":"r-15673-VM","accountId":"1028","format":"VHD","provisioningType":"THIN","poolId":"7","id":"
 
6223","deviceId":"0","hypervisorType":"XenServer","directDownload":"false","deployAsIs":"false","followRedirects":"true"}},"executeInSequence":"true","options":{},"options2":{},"wait":"0","bypassHostMaintenance":"false"}}]
 } to 108462341209969
2025-10-22 10:54:33,668 DEBUG [c.c.a.m.AgentAttache] 
(Work-Job-Executor-62:ctx-a00ad243 job-133845/job-133846 ctx-50f38497) 
(logid:13a10f8a) Seq 20-6844627008673079170: Waiting some more time because 
this is the current command
2025-10-22 11:24:33,668 DEBUG [c.c.a.m.AgentAttache] 
(Work-Job-Executor-62:ctx-a00ad243 job-133845/job-133846 ctx-50f38497) 
(logid:13a10f8a) Seq 20-6844627008673079170: Waiting some more time because 
this is the current command
2025-10-22 11:24:33,674 WARN  [c.c.a.m.AgentAttache] 
(Work-Job-Executor-62:ctx-a00ad243 job-133845/job-133846 ctx-50f38497) 
(logid:13a10f8a) Seq 20-6844627008673079170: Timed out on Seq 
20-6844627008673079170:  { Cmd , MgmtId: 271367514881978, via: 
20(CLD-Z1-XCPH01), Ver: v1, Flags: 100111, 
[{"org.apache.cloudstack.storage.command.CopyCommand":{"srcTO":{"org.apache.cloudstack.storage.to.TemplateObjectTO":{"path":"9f1a2c02-4c9b-4910-b3e8-c1026e42addf","origUrl":"http://download.cloudstack.org/systemvm/4.19/systemvmtemplate-4.19.1-xen.vhd.bz2","uuid":"1036c354-65b7-492f-96fc-848ee19f49ab","id":"380","format":"VHD","accountId":"6","checksum":"{SHA-512}e7df5f0fc04318bf4bf2b28fa0e630cfb3b7cd3f783202382202c8404fc8deaadc5c03e8b0c2137a2fb7d998ee3901e3d94f280587999fee6659399c064b59ea","hvm":"true","displayText":"systemvm-xenserver-4.19.1","imageDataStore":{"org.apache.cloudstack.storage.to.PrimaryDataStoreTO":{"uuid":"CLD-Z1-VOL2","name":"CLD-Z1-VOL2","id":"7","poolType":"PreSetup","host":"lo
 
calhost","path":"/CLD-Z1-VOL2","port":"0","url":"PreSetup://localhost/CLD-Z1-VOL2/?ROLE=Primary&STOREUUID=CLD-Z1-VOL2","isManaged":"false"}},"name":"380-6-45c2d735-1393-3ebb-9b43-21248166660f","size":"(4.88
 GB) 
5242880000","hypervisorType":"XenServer","bootable":"false","uniqueName":"380-6-45c2d735-1393-3ebb-9b43-21248166660f","directDownload":"false","deployAsIs":"false","followRedirects":"true"}},"destTO":{"org.apache.cloudstack.storage.to.VolumeObjectTO":{"uuid":"2cf5fcb9-9570-4263-95ea-98004c0efa98","volumeType":"ROOT","dataStore":{"org.apache.cloudstack.storage.to.PrimaryDataStoreTO":{"uuid":"CLD-Z1-VOL2","name":"CLD-Z1-VOL2","id":"7","poolType":"PreSetup","host":"localhost","path":"/CLD-Z1-VOL2","port":"0","url":"PreSetup://localhost/CLD-Z1-VOL2/?ROLE=Primary&STOREUUID=CLD-Z1-VOL2","isManaged":"false"}},"name":"ROOT-15673","size":"(4.88
 GB) 
5242880000","volumeId":"6223","vmName":"r-15673-VM","accountId":"1028","format":"VHD","provisioningType":"THIN","poolId":"7","id":"6223","
 
deviceId":"0","hypervisorType":"XenServer","directDownload":"false","deployAsIs":"false","followRedirects":"true"}},"executeInSequence":"true","options":{},"options2":{},"wait":"0","bypassHostMaintenance":"false"}}]
 }
2025-10-22 11:24:33,674 DEBUG [c.c.a.m.ClusteredAgentAttache] 
(Work-Job-Executor-62:ctx-a00ad243 job-133845/job-133846 ctx-50f38497) 
(logid:13a10f8a) Seq 20-6844627008673079170: Forwarding to peer to cancel due 
to timeout
2025-10-22 11:24:33,675 DEBUG [c.c.a.m.AgentAttache] 
(Work-Job-Executor-62:ctx-a00ad243 job-133845/job-133846 ctx-50f38497) 
(logid:13a10f8a) Seq 20-6844627008673079170: Cancelling.
2025-10-22 11:24:33,675 DEBUG [o.a.c.s.RemoteHostEndPoint] 
(Work-Job-Executor-62:ctx-a00ad243 job-133845/job-133846 ctx-50f38497) 
(logid:13a10f8a) Failed to send command, due to Agent:20, 
com.cloud.exception.OperationTimedoutException: Commands 6844627008673079170 to 
Host 20 timed out after 3600
com.cloud.utils.exception.CloudRuntimeException: Failed to send command, due to 
Agent:20, com.cloud.exception.OperationTimedoutException: Commands 
6844627008673079170 to Host 20 timed out after 3600
Caused by: com.cloud.utils.exception.CloudRuntimeException: Failed to send 
command, due to Agent:20, com.cloud.exception.OperationTimedoutException: 
Commands 6844627008673079170 to Host 20 timed out after 3600  

GitHub link: https://github.com/apache/cloudstack/discussions/11885

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