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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-8826) XenServer - Use device id passed as part of attach volume API properly
Date Mon, 21 Sep 2015 12:03:04 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-8826?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14900553#comment-14900553
] 

ASF GitHub Bot commented on CLOUDSTACK-8826:
--------------------------------------------

Github user koushik-das commented on a diff in the pull request:

    https://github.com/apache/cloudstack/pull/792#discussion_r39962919
  
    --- Diff: plugins/hypervisors/xenserver/src/com/cloud/hypervisor/xenserver/resource/CitrixResourceBase.java
---
    @@ -3407,6 +3390,18 @@ public void handleSrAndVdiDetach(final String iqn, final Connection
conn) throws
             removeSR(conn, sr);
         }
     
    +    protected void destroyUnattachedVBD(Connection conn, VM vm) {
    +        try {
    +            for (VBD vbd : vm.getVBDs(conn)) {
    +                if (Types.VbdType.DISK.equals(vbd.getType(conn)) && !vbd.getCurrentlyAttached(conn))
{
    +                    vbd.destroy(conn);
    +                }
    +            }
    +        } catch (final Exception e) {
    +            s_logger.debug("destroyUnattachedVBD failed due to " + e.toString());
    --- End diff --
    
    @DaanHoogland Now logging the full exception


> XenServer - Use device id passed as part of attach volume API properly
> ----------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-8826
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-8826
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: XenServer
>    Affects Versions: 4.6.0
>            Reporter: Koushik Das
>            Assignee: Koushik Das
>             Fix For: 4.6.0
>
>
> Random failures were seen in XS attach/detach volume test scenarios (many attach/detach
were performed on the same VM over a span of 24 hrs).
> The failures happened as the device id for attaching volume wasn't available in HV. Some
detached volume didn't got cleaned up properly and so the device id wasn't released.
> The fix would be clean up stale volumes before attaching new ones so the device slots
are released. Also using the device id should be best effort and if that particular id is
not available in XS, it should fallback on using an id that is available and automatically
assigned.



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