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Re: [Xen-users] how to mount one volume to 2 guests

  • To: nikolanikov@xxxxxxx
  • From: Alain Barthe <ab266061@xxxxxxxxx>
  • Date: Wed, 3 Jun 2009 18:53:57 +0200
  • Cc: "Fajar A. Nugraha" <fajar@xxxxxxxxx>, Xen User-List <xen-users@xxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Wed, 03 Jun 2009 09:54:46 -0700
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2009/6/2 <nikolanikov@xxxxxxx>
Yes I realize that, I want to use it with ocfs2. How I can set mode to w! ?

I am not sure to understand, but OCFS2 is a file system. If you want to use it, I think you have to create a disk image file on your ocfs2 file system, then to use the "file:" or "tap:io:" prefix in your domU config files.

You can't use directly a shared physical device, even if you created OCFS2 file systems on it.

Цитат от "Fajar A. Nugraha" <fajar@xxxxxxxxx>:

> 009/6/1  <nikolanikov@xxxxxxx>:
>> I want to ask how to mount one storage device to 2 guests?
>> When I try to create vm handle everything is fine I can create one vdi and
>> vbds for every guest. When I start first machine everything is ok, but when
>> I try to start second one it says that
>> ERROR: 2 INTERNAL_ERROR Device 2051 (vbd) could not be connected.
>> Device /dev/mapper/test_vg-test64_454 is mounted in a guest domain,
>> and so cannot be mounted now.
>> any Ideas how I can share one device to two or more virtual machines? I
>> don't want network solution like nfs,iscsi ... etc
> First of all, you DO realize that sharing a block device without some
> kind of cluster file system could lead to data corruption?
> If you want to share it anyway, you can try changing the mode to "r"
> (for read only) or "w!" (to force read-write multiple mount).
> --
> Fajar
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