Andreas Dilger wrote:
If all of the xattrs are backed up, there is still a whitelist for the
restore step, and in the worst case the user will have to update to a newer
tar (or edit the code and recompile) to restore their data. Ideally, there
would be a default list of attributes to restore, and users could specify
via arguments which xattrs to restore if they have some specific requirement.
This makes a lot of sense.
I suspect it will be very difficult to restore anything
other than "user" attributes by default. System and filesystem
attributes can carry a lot of surprises, especially when
porting data across different OSes (or even just different
filesystems or different kernel revisions).
- Change the restoration of xattrs to be before any file data is written.
This allows the xattrs to contain layout hints, ...
I can't think of any problems with this, esp. if you just move the
xattrs and not ACLs/SELinux too ...
True, as long as the xattrs don't include security
information that would break the rest of the restore.
Tim Kientzle
