Networker

Re: [Networker] Strange recover path phenomena?

2003-10-06 04:12:44
Subject: Re: [Networker] Strange recover path phenomena?
From: Davina Treiber <Treiber AT HOTPOP DOT COM>
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Date: Mon, 6 Oct 2003 08:08:01 +0100
George Sinclair wrote:
I noticed sometime ago -- guess it's no surprise to anyone else -- that
if you backup a pathname that is actually a symbolic link then NetWorker
will appear to be backing up the data and will in fact report that it
has done so, but you'll be in for a rude awakening when you later
attempt to recover the data.

George,

This is expected behaviour. If you backup a symlink, then you are
backing up the inode on disk that contains the symlink. This is ALWAYS
what you would want to happen. When you restore a filesystem that has a
symlink in it, you would expect the symlink still to be there.

Imagine if you had a filesystem with say 10 symlinks to the same 100GB
filesystem. If you followed the link for each of these you would backup
the same data 10 times, and use a terabyte of extra media. This would
not be what you expected. Also consider th situation where a symlink
makes a circular reference. How many times would you back it up then?

By default, save never crosses filesystems. Remember that and you will
be fine.

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