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Re: [Xen-users] cluster server options

To: jim burns <jim_burn@xxxxxxxxxxxxx>
Subject: Re: [Xen-users] cluster server options
From: Nico Kadel-Garcia <nkadel@xxxxxxxxx>
Date: Mon, 24 Dec 2007 17:07:03 +0000
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
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jim burns wrote:
Hi. My SuSE 10.3 system's hard disk died, so I opted for a bigger hard disk as a replacement for xmas. My xen system is Fedora fc8, since that system supports hvm. My SuSE system is formatted with lvm, and comes with nfs.

1) Is nfs sufficient for serving up file-backed stores, or is the performance difference with ocfs2 or gfs that much greater?
NFS is "stateless". This is begging, begging, begging for pain if used as a file-based Xen image storage. Can you go to iscsi?

2) If nfs is sufficient, version 3 or 4? In other words, does xen do record locking (only available in 4), or just file locking? My previous non-xen experience is that sqlite databases only work on nfs4.

3) I don't suppose I can export a logical volume device to my xen server, right? So I'm stuck with creating file backed stores, right?
Whyever can't you export logical volume to your Xen server? Do you mean an LVM type volume? I certainly use those!

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