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From "Sergey Levitskiy (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-9252) Support configurable NFS version for Secondary Storage mounts
Date Mon, 25 Jan 2016 15:26:39 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-9252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15115386#comment-15115386
] 

Sergey Levitskiy commented on CLOUDSTACK-9252:
----------------------------------------------

Unfortunately NFS version negotiation doesn't work properly with all storage vendors. Some
vendors e.g. Tintri require that vers=3 is supplied in mount command likely due to the fact
they don't support negotiations on the server side.
When such NFS secondary storages tries to get mounted in SSVM an exception in mount is generated
'mount.nfs: Protocol family not supported'
The same happens when trying to mount in shell so mount command needs to be told a specific
version. If done so mount succeeds in both management server as well as in SSVM. Supporting
nfs.version in image_store_details gives the best option to support great variety of NFS storage
vendors without bluntly relying on version negotiation in nfs.mount. 


> Support configurable NFS version for Secondary Storage mounts
> -------------------------------------------------------------
>
>                 Key: CLOUDSTACK-9252
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9252
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: VMware
>            Reporter: Nicolas Vazquez
>
> After starting secondary storage VM, secondary storage tries to be mounted but fails
with error: {{Protocol family not supported}}
> It was found out that adding {{-o vers=X}} to mount command it would work, where {{X}}
is the desired NFS version to use. 
> If it is desired to mount a store with a specific NFS version, it has passed in {{image_store_details}}
table for a store with id {{Y}} as a property:
> ||store_id||||name||value||
> |Y|nfs.version|X|
> Where X stands for NFS version



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