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Hi.
Failed backups do not occupy VAILD space on tapes. When a new backup runs
and appends to a tape which was used with a failed backup, Netbackup will
position the tape to the end of the last VALID image on the tape, thus
overwriting the invalid image.
If the tape was blank (in the scratch pool) , it will be placed in the
policie's volume pool, but after the backup has failed, the "Date Assigned"
value of the tape will be blank. I don't recall if the tape will return to
the scratchpool, but I don't think so.
Regards,
Jim
_____
From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of
Mark.Donaldson AT cexp DOT com
Sent: Tuesday, January 31, 2006 12:14 AM
To: tim.martino AT outtask DOT com; veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Images on media question
Anything other than an error code 0 or 1 is a failed backup; failed backups
do not create any valid images. The attempt, though, may still occupy tape
space until any other successful images on that tape are expired & the
entire tape is reusable.
There may be a delay in the time when a tape's images are expired and the
tape becomes reusable.
Look at the "bpexpdate -deassignempty" command to speed the process. It
also accepts a mediaid if you want to limit its effect. The command is
safe, not deleting any valid images. It's just a cleanup command.
-M
-----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 Tim Martino
Sent: Monday, January 30, 2006 1:29 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Images on media question
Running NetBackup 4.5 FP3.
A weekend Fullback loaded 4 different tapes according to the Activity
Monitor. The backup failed due to no available media. Running the Images
on Media Report for these tapes, I see no images for the failed backup.
1. I am not sure if the GUI is the best determinant of this.
2. Since the backup failed, does that mean the images that were backed up
are no longer on the media?
Thanks in advance.
-Tim Martino
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<BODY lang=3DEN-US vLink=3Dpurple link=3Dblue>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D976023108-31012006><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>Hi.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D976023108-31012006><FONT =
face=3DArial=20
color=3D#0000ff size=3D2></FONT></SPAN> </DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D976023108-31012006><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>Failed backups do not occupy VAILD space on =
tapes. When a=20
new backup runs and appends to a tape which was used with a failed =
backup,=20
Netbackup will position the tape to the end of the last VALID image on =
the tape,=20
thus overwriting the invalid image. </FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D976023108-31012006><FONT =
face=3DArial=20
color=3D#0000ff size=3D2></FONT></SPAN> </DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D976023108-31012006><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>If the tape was blank (in the scratch =
pool) , it will=20
be placed in the policie's volume pool, but after the backup has failed, =
the=20
"Date Assigned" value of the tape will be blank. I don't recall if the =
tape will=20
return to the scratchpool, but I don't think so.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D976023108-31012006><FONT =
face=3DArial=20
color=3D#0000ff size=3D2></FONT></SPAN> </DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D976023108-31012006><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>Regards,</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D976023108-31012006><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>Jim</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=20
</B>Mark.Donaldson AT cexp DOT com<BR><B>Sent:</B> Tuesday, January 31, 2006 =
12:14=20
AM<BR><B>To:</B> tim.martino AT outtask DOT com;=20
veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B> RE: [Veritas-bu] =
Images on=20
media question<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><SPAN class=3D884321022-30012006><FONT face=3DArial color=3D#0000ff =
size=3D2>Anything other than an error code 0 or 1 is a failed backup; =
failed=20
backups do not create any valid images. The attempt, though, may =
still=20
occupy tape space until any other successful images on that tape are =
expired=20
& the entire tape is reusable.</FONT></SPAN></DIV>
<DIV><SPAN class=3D884321022-30012006><FONT face=3DArial color=3D#0000ff =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D884321022-30012006><FONT face=3DArial color=3D#0000ff =
size=3D2>There=20
may be a delay in the time when a tape's images are expired and the tape =
becomes=20
reusable.</FONT></SPAN></DIV>
<DIV><SPAN class=3D884321022-30012006><FONT face=3DArial color=3D#0000ff =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D884321022-30012006><FONT face=3DArial color=3D#0000ff =
size=3D2>Look=20
at the "bpexpdate -deassignempty" command to speed the process. It =
also=20
accepts a mediaid if you want to limit its effect. The command is =
safe,=20
not deleting any valid images. It's just a cleanup=20
command.</FONT></SPAN></DIV>
<DIV><SPAN class=3D884321022-30012006><FONT face=3DArial color=3D#0000ff =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D884321022-30012006><FONT face=3DArial color=3D#0000ff =
size=3D2>-M</FONT></SPAN></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
<DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
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>Tim=20
Martino<BR><B>Sent:</B> Monday, January 30, 2006 1:29 PM<BR><B>To:</B> =
veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B> [Veritas-bu] =
Images on=20
media question<BR><BR></FONT></DIV>
<DIV class=3DSection1>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">Running NetBackup 4.5=20
FP3.<o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">A weekend Fullback =
loaded 4=20
different tapes according to the Activity Monitor. The backup =
failed due=20
to no available media. Running the Images on Media Report for =
these=20
tapes, I see no images for the failed backup. =20
<o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">1. I am not sure =
if the GUI=20
is the best determinant of this.<o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">2. Since the =
backup failed,=20
does that mean the images that were backed up are no longer on the=20
media?<o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">Thanks in=20
advance.<o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">-Tim=20
Martino<o:p></o:p></SPAN></FONT></P></DIV></BLOCKQUOTE></BODY></HTML>
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