Re: Extended Attributes API

From: Harti Brandt <hartmut.brandt_at_dlr.de>
Date: Wed, 15 Feb 2006 17:43:50 +0100 (CET)
On Thu, 16 Feb 2006, Geoffrey Giesemann wrote:

GG>On Wed, Feb 15, 2006 at 03:05:35PM +0100, Michael Reifenberger wrote:
GG>> On Wed, 15 Feb 2006, Geoffrey Giesemann wrote:
GG>> ...
GG>> >The FreeBSD calls to get/set/list extended attributes differ from those
GG>> >in Linux:
GG>> 
GG>> This reminds me of something related:
GG>> 
GG>> What is the "official" way of backing up UFS[2] filesystems
GG>> containing extended attributes?
GG>> In former time dump(8) and restore(8) where the tools of choice.
GG>> But do they deal with extended attributes?
GG>> 
GG>
GG>According to the only cvs entry I can find that mentions it [1],
GG>extended attribute support has been TODO for over 3 years :D
GG>
GG>[1] http://www.freebsd.org/cgi/cvsweb.cgi/src/sbin/dump/main.c#rev1.37
GG>
GG>In the meanwhile you can convert your UFS2 volumes to XFS and back them
GG>up the extended attributes with xfsdump!!!! [2]
GG>
GG>[2] http://oss.sgi.com/projects/xfs/faq.html#backingupxfs
GG>
GG>I had a vague recollection pax might've been able to back up extended
GG>attributes, but the specifications at [3] only hint at there being
GG>scope for extended attributes as an 'implementation extension'.
GG>
GG>[3] http://www.opengroup.org/onlinepubs/009695399/utilities/pax.html#tag_04_100_13_03

You might be lucky with star (ports/archievers/star). If not - I could 
help to ping the author which is usually very helpful with things like 
this.

harti
Received on Wed Feb 15 2006 - 15:43:55 UTC

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