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Re: Copy slower than rsync Re: Bugs and features


From: Adrian Phillips
Subject: Re: Copy slower than rsync Re: Bugs and features
Date: 08 Nov 2002 20:54:24 +0100
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2

>>>>> "Mark" == Mark Burgess <Mark.Burgess@iu.hio.no> writes:

    Mark> The point is that an encrypted tunnel is not systemic
    Mark> security, it is communication privacy. rsync cannot check if
    Mark> the files are in line with policy and override permissions,
    Mark> without leaving race windows.  We do not know of its
    Mark> behaviour in relation to races at all... It does not verify
    Mark> transmission error, or test whether a file can be
    Mark> transmitted in full before replacing it (a file could be
    Mark> half copied if disk is full) thus leaving the system
    Mark> broken. It does not define trust relationships in regard to
    Mark> system policy. It doesn't give failover capability.

Just for the record rsync copies to a temporary file, fixes that, then
renames so some of the points you mention are incorrect. I do not have
the knowledge to disuss the security aspects.

Sincerely,

Adrian Phillips

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