Kirks,
thanks a lot.
By the wa y, I use  OCFS2/iSCSI as the  clumster filesystem under Shared 
Mountpoint mode. 
I have a problem right now. 
There are two hosts running ocfs2 and connecting to a signle storage server 
with iSCSI. After I run about one day, one hosts hung up and all the VM on this 
host stopped.
I suspected ocfs2 filesystem locked the host. I want to see the lock status of 
ocfs2. How to do?




[email protected]

From: Kirk Kosinski
Date: 2014-08-28 16:54
To: users
Subject: Re: About sharepoint mode in CloudStack
Hi, Robin.  The NFS option should be used for NFS shares that are not
already mounted on the hosts.  CloudStack will tell the hosts to mount
the NFS share you specify.

The Shared Mount Point option would be for a primary storage that is
already mounted on the hosts by the system administrator.  Here is what
the docs [1] say about it:

> KVM supports "Shared Mountpoint" storage. A shared
> mountpoint is a file system path local to each server
> in a given cluster. The path must be the same across
> all Hosts in the cluster, for example /mnt/primary1.
> This shared mountpoint is assumed to be a clustered
> filesystem such as OCFS2. In this case the CloudStack
> does not attempt to mount or unmount the storage as
> is done with NFS. The CloudStack requires that the
> administrator insure that the storage is available.

Best regards,
Kirk

[1]
http://cloudstack.apache.org/docs/en-US/Apache_CloudStack/4.2.0/html/Admin_Guide/primary-storage.html#hypervisor-support-for-primarystorage

On 08/27/2014 11:33 PM, [email protected] wrote:
> Hi,
> Can anyone help explain the difference of primary storage modes-- sharepoint 
> and NFS?
> thanks, 
> 
> 
> 
> 
> [email protected]
> 

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