Is there any setting for failover in NBU??

Question

HI Experts,

&nbsp;

I am testing the failover scenario with NBU 7.6.1.

I am backing up the SMB share (network share). My client which is the source of my data is mounted on the windows 2008 NBU master server and has 2 nodes-node A and node B.

issue:&nbsp;

if i run a backup from nodeA and do the failover from the cluster while the backup is running, the backup stops. It doesnt fail but is partially successful. NBU backsup the data till the point when failover is executed.&nbsp;

Activity monitor says "backup is partially successful" and says that "the specified path no longer exists".&nbsp;

In an ideal scenario, when a failover is run on nodeA, it should automatically switch to node B without affecting the backup.

However, if i take a backup (without failover) which is successful and do a restore and while restore is running, i do&nbsp;a failover of the nodeA then restore is successful. So the issue is only when failover is done while the backup is running.

&nbsp;

I want to know if there is any setting in NBU which needs to be edited in order do a sucessful backup when a failover is run in the middle of the running backup.

Kindly help and suggest.

&nbsp;

Cheers!!

marianne · Accepted Answer

A cluster does not give you 'always on'. It gives you failover.

Failover means that the application and all resources are taken offline on the failed node and brought online on the standby node.&nbsp;
	You now have a master server that can either restart or resume backups.

What happens to the jobs after failover depends on the type of job, progress at the time of failure&nbsp;and #&nbsp;tries per ## hours settings in Global Attributes.

sdo · Answer

When failover occurs then NetBackup services must be stopped and re-started which interrupts *all* jobs (backups, duplications, replications, restores).

To limit the impact to the backup job - you could try setting 'checkpoint' on the backup policy which should allow you to restart the backup job from the point of the last known previously successful check-point event.

liverpool2507 · Answer

Hi sdo,&nbsp;

as per your suggestion, i tried setting the checkpoint in the policy attribute. However, i encountered the same issue.&nbsp;

Below is the error message that i see in the activity monitor.

&nbsp;

9/3/2015 5:46:22 AM - begin writing
	9/3/2015 5:48:28 AM - Error bpbrm(pid=14720) from client ssdcl498.ibrix.hp: ERR - failure reading file: \ISVUN01Y.USA.HP.COM\NKSHARE
dmp\file3 (WIN32 64: The specified network name is no longer available. )
	9/3/2015 5:49:46 AM - Info bpbkar32(pid=15668) bpbkar waited 48 times for empty buffer, delayed 48 times. &nbsp;&nbsp;
	9/3/2015 5:49:46 AM - Info bptm(pid=12916) waited for full buffer 3247 times, delayed 6989 times &nbsp; &nbsp;
	9/3/2015 5:49:48 AM - Info bptm(pid=12916) EXITING with status 0 &lt;---------- &nbsp; &nbsp; &nbsp; &nbsp;
	9/3/2015 5:49:48 AM - Info bpbrm(pid=14720) validating image for client ssdcl498.ibrix.hp &nbsp; &nbsp; &nbsp; &nbsp;
	9/3/2015 5:49:48 AM - Info bpbkar32(pid=15668) done. status: 1: the requested operation was partially successful &nbsp; &nbsp;
	9/3/2015 5:49:48 AM - end writing; write time: 0:03:26
	the requested operation was partially successful (1)

The job was successfully completed, but some files may have been
	busy or inaccessible. See the problems report or the client's logs for more details.

liverpool2507 · Answer

Hi sdo,&nbsp;

as per your suggestion, i tried setting the checkpoint in the policy attribute. However, i encountered the same issue.&nbsp;

Below is the error message that i see in the activity monitor.

&nbsp;

9/3/2015 5:46:22 AM - begin writing
	9/3/2015 5:48:28 AM - Error bpbrm(pid=14720) from client ssdcl498.ibrix.hp: ERR - failure reading file: \ISVUN01Y.USA.HP.COM\NKSHARE
dmp\file3 (WIN32 64:&nbsp;The specified network name is no longer available. )
	9/3/2015 5:49:46 AM - Info bpbkar32(pid=15668) bpbkar waited 48 times for empty buffer, delayed 48 times. &nbsp;&nbsp;
	9/3/2015 5:49:46 AM - Info bptm(pid=12916) waited for full buffer 3247 times, delayed 6989 times &nbsp; &nbsp;
	9/3/2015 5:49:48 AM - Info bptm(pid=12916) EXITING with status 0 &lt;---------- &nbsp; &nbsp; &nbsp; &nbsp;
	9/3/2015 5:49:48 AM - Info bpbrm(pid=14720) validating image for client ssdcl498.ibrix.hp &nbsp; &nbsp; &nbsp; &nbsp;
	9/3/2015 5:49:48 AM - Info bpbkar32(pid=15668) done. status: 1: the requested operation was partially successful &nbsp; &nbsp;
	9/3/2015 5:49:48 AM - end writing; write time: 0:03:26
	the requested operation was partially successful (1)

The job was successfully completed, but some files may have been
	busy or inaccessible. See the problems report or the client's logs for more details.

liverpool2507 · Answer

Hi Marriane,

Policy Type that i have selected in the NBU policy is MS-Windows.&nbsp;

Schedule backup attempts in global attributes is 1 try/24 hr.

I have tried setting up the checkpoint as suggested by sdo&nbsp;but no gain.

i have pasted the output of the activity monitor in the reply to sdo. Kindly have a look f u can suggest anything.

&nbsp;

Thanks

marianne · Answer

1 try every 24 hours will not try to restart or resume the backup.

Only when number of tries is more that 1 within the backup window, will the backup be retried.

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Is there any setting for failover in NBU??

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