Veritas-bu

[Veritas-bu] incomplete FULL, status of incremental?

2005-07-14 10:27:04
Subject: [Veritas-bu] incomplete FULL, status of incremental?
From: pkeating AT bank-banque-canada DOT ca (Paul Keating)
Date: Thu, 14 Jul 2005 10:27:04 -0400
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So it writes the archive bits on the fly, but if it fails, the client
goes back and "undoes" the archive bits?
=20
thanks.
=20
Paul

        -----Original Message-----
        From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of Stump,
Robert (Contractor) (J6B)
        Sent: July 14, 2005 8:31 AM
        To: Paul Keating; Veritas List
        Subject: RE: [Veritas-bu] incomplete FULL, status of
incremental?
=09
=09
        If a full backup fails it undoes the archive bit thingy.

  _____ =20

        From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of Paul
Keating
        Sent: Thursday, July 14, 2005 8:20 AM
        To: Veritas List
        Subject: [Veritas-bu] incomplete FULL, status of incremental?
=09
=09
        The thought just occurred to me this morning, as I was walking
into the office.....
        =20
        when you do an incremental backup, the client determines which
files to back up, based on archive bits, and various other things (on
windows, particularly.)
        =20
        So if you run a FULL backup on a machine and the backup gets
half way through, and then fails.....it has "touched" half the files on
the machine.
        =20
        if you do an incremental shortly after, the incremental "should"
be based on the previous successfull FULL, but if you had a failed FULL
touch a file, and it had changed since the previous successfull full,
but not since the previous failed full, if the incremental is only
looking at when the file was touched by a full, how would it know that
the previous full, which had touched the file, actually failed, and that
it SHOULD back that file up again.
        =20
        I think I've rambled a bit, and that may not be very
clear......if so, feel free to disregard as the ramblings of a lunatic.
        =20
        Paul
        =20
        =20


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<META http-equiv=3DContent-Type content=3D"text/html; =
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<BODY>
<DIV><SPAN class=3D937482814-14072005><FONT face=3DArial color=3D#800000 =
size=3D2>So it=20
writes the archive bits on the fly, but if it fails, the client goes =
back and=20
"undoes" the archive bits?</FONT></SPAN></DIV>
<DIV><SPAN class=3D937482814-14072005><FONT face=3DArial color=3D#800000 =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D937482814-14072005><FONT face=3DArial color=3D#800000 =

size=3D2>thanks.</FONT></SPAN></DIV>
<DIV><SPAN class=3D937482814-14072005><FONT face=3DArial color=3D#800000 =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D937482814-14072005><FONT face=3DArial color=3D#800000 =

size=3D2>Paul</FONT></SPAN></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #800000 2px =
solid; MARGIN-RIGHT: 0px">
  <DIV></DIV>
  <DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr =
align=3Dleft><FONT=20
  face=3DTahoma size=3D2>-----Original Message-----<BR><B>From:</B>=20
  veritas-bu-admin AT mailman.eng.auburn DOT edu=20
  [mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] <B>On Behalf Of =
</B>Stump,=20
  Robert (Contractor) (J6B)<BR><B>Sent:</B> July 14, 2005 8:31 =
AM<BR><B>To:</B>=20
  Paul Keating; Veritas List<BR><B>Subject:</B> RE: [Veritas-bu] =
incomplete=20
  FULL, status of incremental?<BR><BR></FONT></DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D918003012-14072005><FONT =
face=3DArial=20
  color=3D#0000ff size=3D2>If a full backup fails it undoes the archive =
bit=20
  thingy.</FONT></SPAN></DIV><BR>
  <DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft>
  <HR tabIndex=3D-1>
  <FONT face=3DTahoma size=3D2><B>From:</B> =
veritas-bu-admin AT mailman.eng.auburn DOT edu=20
  [mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] <B>On Behalf Of =
</B>Paul=20
  Keating<BR><B>Sent:</B> Thursday, July 14, 2005 8:20 AM<BR><B>To:</B> =
Veritas=20
  List<BR><B>Subject:</B> [Veritas-bu] incomplete FULL, status of=20
  incremental?<BR></FONT><BR></DIV>
  <DIV></DIV>
  <DIV><SPAN class=3D857271412-14072005><FONT face=3DArial size=3D2>The =
thought just=20
  occurred to me this morning, as I was walking into the=20
  office.....</FONT></SPAN><SPAN class=3D857271412-14072005><FONT =
face=3DArial=20
  size=3D2></FONT></SPAN></DIV>
  <DIV><SPAN class=3D857271412-14072005><FONT face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV><SPAN class=3D857271412-14072005><FONT face=3DArial size=3D2>when =
you do an=20
  incremental backup, the client determines which files to back up, =
based on=20
  archive bits, and various other things (on windows,=20
  particularly.)</FONT></SPAN></DIV>
  <DIV><SPAN class=3D857271412-14072005><FONT face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV><SPAN class=3D857271412-14072005><FONT face=3DArial size=3D2>So =
if you run a=20
  FULL backup on a machine and the backup gets half way through, and =
then=20
  fails.....it has "touched" half the files on the =
machine.</FONT></SPAN></DIV>
  <DIV><SPAN class=3D857271412-14072005><FONT face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV><SPAN class=3D857271412-14072005><FONT face=3DArial size=3D2>if =
you do an=20
  incremental shortly after, the incremental "should" be based on the =
previous=20
  successfull FULL, but if you had a failed FULL touch a file, and it =
had=20
  changed since the previous successfull full, but not since the =
previous failed=20
  full, if the incremental is only looking at when the file was touched =
by a=20
  full, how would it know that the previous full, which had touched the =
file,=20
  actually failed, and that it SHOULD back that file up=20
  again.</FONT></SPAN></DIV>
  <DIV><SPAN class=3D857271412-14072005><FONT face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV><SPAN class=3D857271412-14072005><FONT face=3DArial size=3D2>I =
think I've=20
  rambled a bit, and that may not be very clear......if so, feel free to =

  disregard as the ramblings of a lunatic.</FONT></SPAN></DIV>
  <DIV><SPAN class=3D857271412-14072005><FONT face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV><SPAN class=3D857271412-14072005><FONT face=3DArial=20
  size=3D2>Paul</FONT></SPAN></DIV>
  <DIV><SPAN class=3D857271412-14072005><FONT face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV><SPAN class=3D857271412-14072005><FONT face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV></BLOCKQUOTE></BODY></HTML>
=00
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