[Dump-users] preliminary EA/ACL support in dump/restore (fwd)
Kenneth Porter
shiva at sewingwitch.com
Fri Dec 10 16:32:08 UTC 2004
FYI, particularly for the SELinux people:
------------ Forwarded Message ------------
Date: Friday, December 10, 2004 5:13 PM +0100
From: Stelian Pop <stelian at popies.net>
To: dump-announce at lists.sourceforge.net
Cc: dump-users at lists.sourceforge.net, dump-devel at lists.sourceforge.net
Subject: [Dump-users] preliminary EA/ACL support in dump/restore
Hi everybody.
Support of ACLs is a feature requested by many for a long time and I
finally got the time to implement it. Since on Linux ACLs are only
a particular case of EAs (Extended Attributes), I implemented full
EA support, meaning that even security labels set (for example) by
SELinux will be backuped.
You can download a patch (against the current CVS dump) here:
http://dump.sourceforge.net/dump-ea.patch.bz2
Some notes:
* the patch is complete, meaning that everything is supposed to
work: dumping, extraction, comparing, in all modes etc.
* the patch modifies some key areas of restore, so pay
attention and verify that you can reread your backups
before relying on them.
* the tape format changed a bit and you will need the patched
restore to extract the files.(*)
Please test this and report back if there are any issues.
I plan to release a new version of dump (0.4b38) in the next few
days, but I will NOT include the EA patch in it, because it really
needs more testing.
But as soon as I get enough positive replies on the EA patch
I will include it in the official mainline.
Thanks,
Stelian.
(*) In fact is a bit more complicated:
- if no EAs are backuped, dump format should remain the same as in
the old versions, so you can use whatever restore you want.
- if EAs are backuped but never on directory inodes, then a reasonable
recent version of restore should be happy and just skip over the
extended attributes data.
- if EAs are backuped for directory inodes, older restores will fail
to extract with some 'directory corrupted' error.
--
Stelian Pop <stelian at popies.net>
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