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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-9752) [Vmware] Optimization of volume attachness to vm
Date Tue, 07 Feb 2017 05:25:41 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-9752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15855359#comment-15855359
] 

ASF GitHub Bot commented on CLOUDSTACK-9752:
--------------------------------------------

Github user SudharmaJain commented on the issue:

    https://github.com/apache/cloudstack/pull/1913
  
    @nvazquez I think in case if connection to vcenter fails there are changes as the disk
may get created on vcenter. In such case we may need to remove the vmdk. we can improve the
logic to search vmdk in specific location of data store and reduce the delay. 


> [Vmware] Optimization of volume attachness to vm
> ------------------------------------------------
>
>                 Key: CLOUDSTACK-9752
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9752
>             Project: CloudStack
>          Issue Type: Improvement
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: VMware
>    Affects Versions: 4.10.0.0
>            Reporter: Nicolas Vazquez
>            Assignee: Nicolas Vazquez
>             Fix For: 4.10.0.0
>
>
> This optimization aims to reduce volume attach slowness due to vmdk files search on datastore
before creating the volume (search for {{.vmdk}}, {{-flat.vmdk}} and {{-delta.vmdk}} files
to delete them if they exist). This search is not necessary when attaching a volume in Allocated
state, due to volume files don't exist on datastore.
> On large datastores, this search can cause volume attachness to be really slow, as we
can see in this log lines:
> {code}
> 13-mgmt.log:2016-11-02 10:16:33,136 INFO  [vmware.mo.DatastoreMO] (DirectAgent-931:ctx-5687d68e
uscrlpdcsesx240.ads.autodesk.com, job-8675314/job-8675315, cmd: CreateObjectCommand) Searching
file 9ce7731fd38b4045afbb7ce9754abbc1.vmdk in [b5ebda046d613e079b5874b169cd848f]
> 13-mgmt.log:2016-11-02 10:19:42,567 WARN  [storage.resource.VmwareStorageLayoutHelper]
(DirectAgent-931:ctx-5687d68e uscrlpdcsesx240.ads.autodesk.com, job-8675314/job-8675315, cmd:
CreateObjectCommand) Unable to locate VMDK file: 9ce7731fd38b4045afbb7ce9754abbc1.vmdk
> 13-mgmt.log:2016-11-02 10:19:42,719 INFO  [vmware.mo.DatastoreMO] (DirectAgent-931:ctx-5687d68e
uscrlpdcsesx240.ads.autodesk.com, job-8675314/job-8675315, cmd: CreateObjectCommand) Search
file 9ce7731fd38b4045afbb7ce9754abbc1-flat.vmdk on [b5ebda046d613e079b5874b169cd848f] 
> …
> 13-mgmt.log:2016-11-02 10:19:44,399 INFO  [vmware.mo.DatastoreMO] (DirectAgent-931:ctx-5687d68e
uscrlpdcsesx240.ads.autodesk.com, job-8675314/job-8675315, cmd: CreateObjectCommand) Searching
file 9ce7731fd38b4045afbb7ce9754abbc1-flat.vmdk in [b5ebda046d613e079b5874b169cd848f]
> 13-mgmt.log:2016-11-02 10:22:07,581 WARN  [storage.resource.VmwareStorageLayoutHelper]
(DirectAgent-931:ctx-5687d68e uscrlpdcsesx240.ads.autodesk.com, job-8675314/job-8675315, cmd:
CreateObjectCommand) Unable to locate VMDK file: 9ce7731fd38b4045afbb7ce9754abbc1-flat.vmdk
> 13-mgmt.log:2016-11-02 10:22:07,731 INFO  [vmware.mo.DatastoreMO] (DirectAgent-931:ctx-5687d68e
uscrlpdcsesx240.ads.autodesk.com, job-8675314/job-8675315, cmd: CreateObjectCommand) Search
file 9ce7731fd38b4045afbb7ce9754abbc1-delta.vmdk on [b5ebda046d613e079b5874b169cd848f] 
> 13-mgmt.log:2016-11-02 10:22:09,745 INFO  [vmware.mo.DatastoreMO] (DirectAgent-931:ctx-5687d68e
uscrlpdcsesx240.ads.autodesk.com, job-8675314/job-8675315, cmd: CreateObjectCommand) Searching
file 9ce7731fd38b4045afbb7ce9754abbc1-delta.vmdk in [b5ebda046d613e079b5874b169cd848f]
> 13-mgmt.log:2016-11-02 10:25:06,362 WARN  [storage.resource.VmwareStorageLayoutHelper]
(DirectAgent-931:ctx-5687d68e uscrlpdcsesx240.ads.autodesk.com, job-8675314/job-8675315, cmd:
CreateObjectCommand) Unable to locate VMDK file: 9ce7731fd38b4045afbb7ce9754abbc1-delta.vmdk
> {code}



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