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Hello!
=20
I found out the problem is not at all related to cluster volumes and =
strange ip addresses.
=20
=20
Instead this is a privileges problem. The service (agent) is running as =
user Local System (the default setup). For directory structures where =
"CREATOR OWNER" and "SYSTEM" had no explicit privileges defined or =
inherited, the differential backups behaved like full backups, causing =
all files to be copied each time.
=20
1. Can anyone explain this behavior? Is the agent not able to read the =
modification time, and as a result the file is copied "just to be sure"?
=20
2. Does anyone know exactly which privileges are needed for the NB agent =
to perform correctly (regarding file backups, not databases etc)?
=20
Regards
/Bl=E5berg
=20
=20
=20
________________________________
From: veritas-bu-admin AT mailman.eng.auburn DOT edu =
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of Jonas =
Bl=E5berg
Sent: den 8 augusti 2005 10:51
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] backup of cluster volumes
=20
Hello!
=20
I am experiencing a problem when backing up cluster volumes. The backup =
clients are Windows machines called node1 and node2, and the cluster =
volumes are reached by virtual ip addresses called service1 and service2 =
in the backup server's hosts file (i.e the cluster services are using =
fail-over functionality).=20
=20
There is no problem taking backup of the hosts (node1 and node2) - both =
full and incremental backups are ok.
=20
However when taking backup of the cluster volumes (service1 and =
service2) the full backup is ok, but the incremental backup is the same =
size as a full backup, resulting in huge backup amounts being created. =
It seems it cannot find any full backup to use for reference when making =
incremental backup.
=20
=20
We have the same kind of setup using a Linux fail-over cluster which is =
working ok regarding the incremental backups.=20
=20
Is there any obscure difference in the way Linux and Windows NetBackup =
clients are handling the client hostname?
=20
=20
The server is using Sun Solaris 8 and NB 4.5 FP6. The clients are =
Windows 2003 and NB 4.5 FP6.
=20
/bl=E5berg
=20
=20
Jonas Bl=E5berg
Mandator Infrastructure
Kruthusgatan 17,6
S-411 04 G=F6teborg
@mail: jonas.blaberg AT mandator DOT com
@phone: +46-(0)31-739 84 54 =20
=20
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<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Hello!<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>I found out the problem is not at =
all related
to cluster volumes and strange ip =
addresses.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Instead this is a privileges =
problem. The
service (agent) is running as user Local System (the default setup). For =
directory
structures where “CREATOR OWNER” and “SYSTEM” =
had no
explicit privileges defined or inherited, the differential backups =
behaved like
full backups, causing all files to be copied each =
time.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>1. Can anyone explain this =
behavior? Is
the agent not able to read the modification time, and as a result the =
file is
copied “just to be sure”?<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>2. Does anyone know exactly which =
privileges
are needed for the NB agent to perform correctly (regarding file =
backups, not
databases etc)?<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Regards<o:p></o:p></span></font></p>=
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>/Bl=E5berg<o:p></o:p></span></font><=
/p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
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<p class=3DMsoNormal><b><font size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font =
size=3D2
face=3DTahoma><span style=3D'font-size:10.0pt;font-family:Tahoma'> =
veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] <b><span =
style=3D'font-weight:
bold'>On Behalf Of </span></b>Jonas Bl=E5berg<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> den 8 augusti 2005 =
10:51<br>
<b><span style=3D'font-weight:bold'>To:</span></b>
veritas-bu AT mailman.eng.auburn DOT edu<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> [Veritas-bu] =
backup of
cluster volumes</span></font><o:p></o:p></p>
</div>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Hello!<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>I am experiencing a problem when backing up cluster =
volumes.
The backup clients are Windows machines called node1 and node2, and the =
cluster
volumes are reached by virtual ip addresses called service1 and service2 =
in the
backup server’s hosts file (i.e the cluster services are using =
fail-over
functionality). <o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>There is no problem taking backup of the hosts (node1 =
and
node2) – both full and incremental backups are =
ok.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>However when taking backup of the cluster volumes =
(service1
and service2) the full backup is ok, but the incremental backup is the =
same
size as a full backup, resulting in huge backup amounts being created. =
It seems
it cannot find any full backup to use for reference when making =
incremental
backup.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>We have the same kind of setup using a Linux =
fail-over
cluster which is working ok regarding the incremental backups. =
<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Is there any obscure difference in the way Linux and =
Windows
NetBackup clients are handling the client =
hostname?<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>The server is using Sun Solaris 8 and NB 4.5 FP6. The
clients are Windows 2003 and NB 4.5 FP6.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>/bl=E5berg<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p style=3D'margin:0cm;margin-bottom:.0001pt'><font size=3D2 =
face=3D"Times New Roman"><span
style=3D'font-size:10.0pt'>Jonas Bl=E5berg<o:p></o:p></span></font></p>
<p style=3D'margin:0cm;margin-bottom:.0001pt'><font size=3D2 =
face=3D"Times New Roman"><span
style=3D'font-size:10.0pt'> </span></font><font size=3D2><span =
lang=3DSV
style=3D'font-size:10.0pt'>Mandator =
Infrastructure<o:p></o:p></span></font></p>
<p style=3D'margin:0cm;margin-bottom:.0001pt'><font size=3D2 =
face=3D"Times New Roman"><span
lang=3DSV style=3D'font-size:10.0pt'> Kruthusgatan =
17,6<o:p></o:p></span></font></p>
<p style=3D'margin:0cm;margin-bottom:.0001pt'><font size=3D2 =
face=3D"Times New Roman"><span
lang=3DSV style=3D'font-size:10.0pt'> </span></font><font =
size=3D2><span
style=3D'font-size:10.0pt'>S-411 04 =
G=F6teborg<o:p></o:p></span></font></p>
<p style=3D'margin:0cm;margin-bottom:.0001pt'><font size=3D2 =
face=3D"Times New Roman"><span
style=3D'font-size:10.0pt'>@mail: =
jonas.blaberg AT mandator DOT com<o:p></o:p></span></font></p>
<p style=3D'margin:0cm;margin-bottom:.0001pt'><font size=3D2 =
face=3D"Times New Roman"><span
style=3D'font-size:10.0pt'>@phone: +46-(0)31-739 84
54 =
<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'><o:p> </o:p></span></font></p>
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