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[Veritas-bu] Differential/Cumulative
2002-05-08 10:28:16
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Dan,
atime is just when the file was last read - there's been no modification so
there's no need to back it up again.
Incrementals are done with the mtime value. Cummulative incrementals are
mtimes changed since the last full backup time, Differential incrementals
are mtimes changed since the last incremental backup time.
-Mark
-----Original Message-----
From: Dan Chrastil [mailto:dchrastil AT bcbsga DOT com]
Sent: Wednesday, May 08, 2002 5:10 AM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Differential/Cumulative
Quick question concerning these types. In the manual it states that each
only backs up what data
has changed since the last full or incremental. Does this mean they work on
modified (mtime) or
accessed (atime) date/time or both?
Thanks
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<TITLE>RE: [Veritas-bu] Differential/Cumulative</TITLE>
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<P><FONT SIZE=3D2>Dan,</FONT>
</P>
<P><FONT SIZE=3D2>atime is just when the file was last read - there's =
been no modification so there's no need to back it up again.</FONT>
</P>
<P><FONT SIZE=3D2>Incrementals are done with the mtime value. =
Cummulative incrementals are mtimes changed since the last full backup =
time, Differential incrementals are mtimes changed since the last =
incremental backup time.</FONT></P>
<P><FONT SIZE=3D2>-Mark</FONT>
</P>
<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: Dan Chrastil [<A =
HREF=3D"mailto:dchrastil AT bcbsga DOT com">mailto:dchrastil AT bcbsga DOT
com</A>]</F=
ONT>
<BR><FONT SIZE=3D2>Sent: Wednesday, May 08, 2002 5:10 AM</FONT>
<BR><FONT SIZE=3D2>To: veritas-bu AT mailman.eng.auburn DOT edu</FONT>
<BR><FONT SIZE=3D2>Subject: [Veritas-bu] Differential/Cumulative</FONT>
</P>
<BR>
<P><FONT SIZE=3D2>Quick question concerning these types. In the =
manual it states that each only backs up what data</FONT>
<BR><FONT SIZE=3D2>has changed since the last full or =
incremental. Does this mean they work on modified (mtime) =
or</FONT>
<BR><FONT SIZE=3D2>accessed (atime) date/time or both?</FONT>
</P>
<P><FONT SIZE=3D2>Thanks</FONT>
</P>
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