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https://issues.apache.org/jira/browse/CLOUDSTACK-9794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15964261#comment-15964261
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ASF GitHub Bot commented on CLOUDSTACK-9794:
--------------------------------------------
Github user sureshanaparti commented on the issue:
https://github.com/apache/cloudstack/pull/1953
Changes in the PR #2019.
Maximum data volumes supported field, in the _hypervisor_capabilities_
table, should be the attachable data volumes to the VM. This excludes the ROOT
disk and CD-ROM. So, the hypervisor has to support max devices = maximum data
volumes supported + 2 (ROOT and CD-ROM).
0(zero) index is considered in `getDeviceId()` for ROOT disk as the ROOT
disk attach cmd uses this method. This has to be refactored.
> Unable to attach more than 14 devices to a VM
> ---------------------------------------------
>
> Key: CLOUDSTACK-9794
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9794
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Components: Volumes
> Reporter: Suresh Kumar Anaparti
> Assignee: Suresh Kumar Anaparti
> Fix For: 4.10.0.0
>
>
> A limit of 13 disks is set in hypervisor_capabilities for VMware hypervisor.
> Changed this limit to a higher value in the DB directly for the VMware and
> tried attaching more than 14 disks. This was failing with the below exception:
> {noformat}
> 2016-08-12 18:42:53,694 ERROR [c.c.a.ApiAsyncJobDispatcher]
> (API-Job-Executor-40:ctx-56068c6b job-1015) (logid:b22938fd) Unexpected
> exception while executing
> org.apache.cloudstack.api.command.admin.volume.AttachVolumeCmdByAdmin
> java.util.NoSuchElementException
> at java.util.ArrayList$Itr.next(ArrayList.java:794)
> at
> com.cloud.storage.VolumeApiServiceImpl.getDeviceId(VolumeApiServiceImpl.java:2439)
> at
> com.cloud.storage.VolumeApiServiceImpl.attachVolumeToVM(VolumeApiServiceImpl.java:1308)
> at
> com.cloud.storage.VolumeApiServiceImpl.attachVolumeToVM(VolumeApiServiceImpl.java:1173)
> at sun.reflect.GeneratedMethodAccessor248.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:601)
> at
> org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
> at
> org.apache.cloudstack.network.contrail.management.EventUtils$EventInterceptor.invoke(EventUtils.java:106)
> {noformat}
> There was a hardcoded limit of 15 on the number of devices for a VM.
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