Question: Does XFS journal data or only metadata?

[Anders Saaby <as@xxxxxxxxxxxx>]

Hi List,

We are considering using NVRAM for external journal on some of our XFS 
filesystems, but questions emerge which I can not find answers for:

Does XFS journal everything (data and metadata) or only metadata?

Are we able to move an internal log to external log on an existing filesystem? 
(xfs_growfs has an option for it "-x", but the man page says it is "not 
implemented") - If this is not implemented, do we have alternative measures 
for creating an external log on an existing filesystem?

Thanks in advance,

-- 
Med venlig hilsen - Best regards - Meilleures salutations

Anders Saaby
Systems Engineer
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Cohaesio A/S - Maglebjergvej 5D - DK-2800 Lyngby
Phone: +45 45 880 888 - Fax: +45 45 880 777
Mail: as@xxxxxxxxxxxx - http://www.cohaesio.com
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