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From "rashmidixit (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-9752) [Vmware] Optimization of volume attachness to vm
Date Fri, 27 Jan 2017 12:25:24 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-9752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15842691#comment-15842691
] 

rashmidixit commented on CLOUDSTACK-9752:
-----------------------------------------

Github user serg38 commented on the issue:

    https://github.com/apache/cloudstack/pull/1913
  
    @rhtyd @karuturi Can we run vmware tests on this PR and merge on success ?


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> [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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