Is xfsdump operation atomic?

[Michael Locher <locher@xxxxxxxxxxxx>]

Hi

I wonder if xfsdump is an atomic operation and thus can be savely used 
on a live filesystem?
If not, what is the recommended way to backup a live XFS filesystem?

I guess this information would also be interessting to others, so why 
not include it in the paragraph about xfsdump on the XFS homepage?

Cheers
  Michael

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