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Netting Out NetBackup

Showing posts by Vilobh Meshram remove filter
Vilobh Meshram | 08 May 2009 | 0 comments

If the size of the heap data segment is limited then for large process we may have a core dump because of the way the memory management is implemented in AIX.

Following are the quick solution to try out :-

1. ulimit -d unlimited ------ should allow larger process.
2. Increase the LDR_CNTRL=MAXDATA setting at the AIX level prior to executing the command.
export LDR_CNTRL=MAXDATA=0x20000000 ( Default on AIX is 0x10000000)
To make the setting permanent, place the LDR_CNTRL=MAXDATA=0x20000000 to the end of the/etc/environment file.
All must be set in the environment of the netbackup processes at startup.
3. NBU since 6.0.MP7 takes care of such issues. Because later the way the binaries were built was changed to take into consideration such scenarios. Making the changes in the /etc/environment will make the changes for the entire system.

Technical Explaination:-

On AIX, the 32-bit address space (= 232 or 4 GB) is divided into...

Vilobh Meshram | 26 Jan 2009 | 4 comments

Note:  This is not a recommended procedure.  It should be used only in extreme situations and as a last step in attempting to restore data. This procedure has been used on numerous occasions with success.

First, figure out the fragment number and the block size needed.

Ex:

# ./bpmedialist -mcontents -ev D0004
media id = D0004, allocated 09/21/99 14:19:, retention level = 1

File number 1
 Backup id = jeckle_0937941543
 Creation date = 09/21/99 14:19:
 Expiration date = 10/05/99 14:19:
 Retention level = 1
 Copy number = 1
 Fragment number = 1
 Block size (in bytes) = 32768

Then work the tape:

ficus# tpreq -ev D0004 -a r -d dlt -p NetBackup -f /tmp/mytape

This issues a tpreq for media id D0004, the " r " is for read, the " -d " is density, " -p " is pool and " -f " is mount point.

ficus# /usr/...