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Re: [Networker] User file deletions between incrementals
2009-10-29 17:11:22
Dag Nygren wrote:
torsdag 29 oktober 2009 01:59:26 skrev A Darren Dunham:
On Wed, Oct 28, 2009 at 05:59:06PM -0400, George Sinclair wrote:
Hmm ... I was always under the impression that this was not the case, at
least not with a browsable recover. I thought the whole point of a
browse recover was that NW was supposed to be able to rebuild the
directory, or file system, exactly the way it last appeared, so it ought
to remove deleted files since the deletion of files gets updated in the
client index, assuming, of course, that they were ever backed up.
In the old days, this wasn't possible. An unmodified file wouldn't be
backed up in an incremental saveset, so the server couldn't distinguish
between "not modified" and "deleted". Where is the image of the
filesystem kept that would show file deletions?
What happens here is the Networker tracks the changetime of the directory
(which will change by a deletion in the POSIX compliant setups). If changed,
the directory info was backed up again in its new form. In Windows this has
been a problem as Windows doesn't seem to consider a deletion of a directory a
change :-( and that generated a problem in some versions of Networker. Should
work fine in the more recent Networkers though.
Same thing with a unchanged but renamed file BTW.
On a related note - and one gotcha to keep in mind - at least with Unix,
anyway, is that when you move a directory (/bin/mv dir1) it doesn't
change the file status times on the constituent files or
sub-directories, only the directory itself (dir1), so this is all NW
records in the index. As a result, until the file status times change on
the constituent data or a level full is run, that data will not get
backed up. This obviously won't happen, however, if someone moves a
specific named file because it would get its file status time updated.
NW incrementals back up files based on change of file status time since
the last incremental. Fulls of course get everything.
I don't know if my above comments apply to Windows, however. Anyone?
Best
Dag
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--
George Sinclair
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