Veritas-bu

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

2005-07-14 12:47:08
Subject: [Veritas-bu] incomplete FULL, status of incremental?
From: kris.williams AT hp DOT com (Williams, Kristopher L)
Date: Thu, 14 Jul 2005 11:47:08 -0500
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I'm pretty sure it doesn't reset the archive bit on any files (even the
ones already backed up) until the whole job in finished. So it doesn't
"go back" and fix the archive bit if the job fails, it just waits until
the job finishes and clears the bit as the last step of the job.
=20
=20
Thanks,
=20
Kris=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 10:27 AM
To: Veritas List
Subject: RE: [Veritas-bu] incomplete FULL, status of incremental?


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.

________________________________

        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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<HTML><HEAD><TITLE>Message</TITLE>
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<META content=3D"MSHTML 6.00.2900.2180" name=3DGENERATOR></HEAD>
<BODY>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D149344516-14072005><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>I'm pretty sure it doesn't reset the archive =
bit on any=20
files (even the ones already backed up) until the whole job in finished. =
So it=20
doesn't "go back" and fix the archive bit if the job fails, it just =
waits until=20
the job finishes and clears the bit as the last step of the=20
job.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D149344516-14072005><FONT =
face=3DArial=20
color=3D#0000ff size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D149344516-14072005><FONT =
face=3DArial=20
color=3D#0000ff size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D149344516-14072005><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>Thanks,</FONT></SPAN></DIV>
<DIV>&nbsp;</DIV>
<DIV align=3Dleft><FONT face=3DArial color=3D#0000ff size=3D2><EM>Kris=20
</EM></FONT></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 10:27 AM<BR><B>To:</B> =
Veritas=20
List<BR><B>Subject:</B> RE: [Veritas-bu] incomplete FULL, status of=20
incremental?<BR></FONT><BR></DIV>
<DIV></DIV>
<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>

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