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xfsdump on mounted filesystem

To: xfs@xxxxxxxxxxx
Subject: xfsdump on mounted filesystem
From: Jan Schulze <schulze@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Date: Fri, 29 May 2009 14:56:30 +0200 (CEST)
In-reply-to: <8097683.3361243601669032.JavaMail.root@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Hi all,

is it advisable to use xfsdump on a mounted file system, or am I likely to be 
running into problems when doing so? 

The Wikipedia article on XFS states "The xfsdump utility backs up an XFS 
filesystem in inode order, and in contrast to traditional UNIX file systems 
which must be unmounted before dumping to guarantee a consistent dump image, 
XFS file systems can be dumped while the file system is in use."

However, I have not found any other reference, that supports this statement. 
Also, I do not really understand, what "backing up in inode orde" means. 
Anybody can clear this up?

Best Regards,

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