BUG REPORT: NetBackup backup/duplications fail status 83/84/2074. NetBackup nbrmms log reports 'No slots are available anymore'

Article:TECH176616  |  Created: 2011-12-09  |  Updated: 2012-04-04  |  Article URL http://www.symantec.com/docs/TECH176616
Article Type
Technical Solution

Product(s)

Environment

Issue



NetBackup backup/duplications fail status 83/84/2074.  The NetBackup nbrmms log reports: 'No slots are available anymore'


Error



Non-verbose nbrmms log:

September 19 22:08:12 ERR [1191237952]: 25011: A bptm.exe request for agent Receive from 192.168.1.116:55183 for dsid 3 was denied for the following reason:
No slots available anymore.
September 19 22:08:12 TRACE [1199630656]: taskAvail: 3 slots available
September 19 22:08:12 ERR [1199630656]: 25011: A bptm.exe request for agent Store from 192.168.1.116:55188 for dsid 3 was denied for the following reason:
No slots available anymore.

Cause



NetBackup pdplugin does not close bptm and nbrmms connections properly, resulting in an exhaustion of ports open to PureDisk content router spoold process.

The bptm process is affected ONLY if the disk storage unit is configured for multiplexing and duplication is running. 

Example, the bpstulist -L output will show Max MPX greater than 1:

Label:               DISK_POOL_STU
Storage Unit Type:    Disk
Storage Unit Subtype: DiskPool (6)
Host Connection:      any.host.net
Concurrent Jobs:      40
On Demand Only:       yes
Max MPX:              32                  
 

The nbrmms daemon is only affected when BackupRestoreRange is configured in the contentrouter.config in a PureDisk cluster. 

When this occurs, backups/duplications begin failing with status 2074's, 83's and 84's.  A netstat –anp | grep spoold | wc –l on the PureDisk content router will report 3000 or more open connections. 


Solution



The formal resolution to this issue (Etrack 2645085) is included in the following release:

  • NetBackup 7.1 Maintenance Relase 4 (7.1.0.4)

More information on NetBackup 7.1.0.4 is available at the following link:
 http://www.symantec.com/business/support/index?page=landing&key=15143

Symantec has acknowledged that the above-mentioned issue (Etrack 2645085) is present in the current version(s) of the product(s) mentioned at the end of this article. This issue is currently scheduled to be addressed in the following release:

  • NetBackup 7.5 Maintenance Release 3 (7.5.0.3)

When NetBackup 7.5.0.3 is available, please visit the following link for download and README information:
 http://www.symantec.com/business/support/index?page=landing&key=15143


Supplemental Materials

SourceETrack
Value2568242
Description

3000+ connections from a Windows media server to appliance causes multiplexing backups to fail with 2074's, 83's and 84s.


SourceETrack
Value2645085
Description

there are severe resource leaks resuled from close_server's not being called in multiplexing scenario


SourceError Code
Value83
Description

media open error


SourceError Code
Value84
Description

media write error


SourceError Code
Value2074
Description

Disk volume is down



Article URL http://www.symantec.com/docs/TECH176616


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