When /usr/openv is in the exclude list of a Linux backup hosts, VMware backups will appear to complete successfully but will not contain any data.

Article:TECH215894  |  Created: 2014-03-18  |  Updated: 2014-11-04  |  Article URL http://www.symantec.com/docs/TECH215894
Article Type
Technical Solution

Product(s)

Subject

Issue



Document history:
April 4, 2014: Initial publication
May 8, 2014: Updated with resolved version

If /usr/openv is in the exclude list on a Linux VM (virtual machine) backup host, VMware backups will complete and report success (status code 0) while not backing up any data.  The resulting backup image is only 32K (see figure):


Error



No error is reported.


Environment



This issue affects all Linux backup hosts through version 7.6.0.1.

Support for Linux backup hosts began in the NetBackup with the VMware option 7.5.0.3 maintenance release.

This includes NetBackup Appliances used as backup hosts.

Note: This issue does not affect Windows backup hosts.


Cause



NetBackup mounts the VMware snapshot under /usr/openv/netbackup/online_util/fi_cntl/ which was being excluded due to the entry in the exclude list.

Example exclude list:
# cat /usr/openv/netbackup/exclude_list
/usr/openv
/msdp
/install
/vmax
/logs

The bpbkar log shows:
13:17:57.303 [32119] <4> bpbkar expand_wildcards: start to backup filelist /usr/openv/netbackup/online_util/fi_cntl/bpfis.fim.CLIENT001_TEST_1394453845.1.0.NBU_DATA.xml,nb_fscp_enabled is 0
13:17:57.303 [32119] <4> bpbkar expand_wildcards: INF - Processing /usr/openv/netbackup/online_util/fi_cntl/bpfis.fim.CLIENT001_TEST_1394453845.1.0.NBU_DATA.xml
13:17:57.315 [32119] <2> bpbkar SelectFile: cwd=NULL path=/usr/openv/netbackup/online_util/fi_cntl/bpfis.fim.CLIENT001_TEST_1394453845.1.0.NBU_DATA.xml
13:17:57.315 [32119] <2> bpbkar resolve_path: INF - Actual mount point of /usr/openv/netbackup/online_util/fi_cntl is /usr/openv/netbackup/online_util/fi_cntl
13:17:57.315 [32119] <2> bpbkar SelectFile: INF - Resolved_path = /usr/openv/netbackup/online_util/fi_cntl/bpfis.fim.CLIENT001_TEST_1394453845.1.0.NBU_DATA.xml
13:17:57.315 [32119] <4> is_excluded: Excluded /usr/openv/netbackup/online_util/fi_cntl/bpfis.fim.CLIENT001_TEST_1394453845.1.0.NBU_DATA.xml by exclude_list entry /usr/openv
13:17:57.315 [32119] <4> bpbkar expand_wildcards: end backup for filelist /usr/openv/netbackup/online_util/fi_cntl/bpfis.fim.CLIENT001_TEST_1394453845.1.0.NBU_DATA.xml
13:17:57.315 [32119] <4> bpbkar main: INF - Client completed sending data for backup

13:17:57.315 [32119] <2> bpbkar write_eot: JBD - bpbkar waited 0 times for empty buffer, delayed 0 times
13:17:57.315 [32119] <2> bpbkar main: INF -
Total Size:0

<snip>

13:17:57.515 [32119] <4> bpbkar Exit: INF - bpbkar exit normal
13:17:57.515 [32119] <4> bpbkar Exit: INF - EXIT STATUS 0: the requested operation was successfully completed


Solution



The formal resolution for this issue (Etrack 3465407) is included in the following releases:

  • NetBackup 7.6 Maintenance Release 2 (7.6.0.2)
  • NetBackup Appliances 2.6.0.2

These releases are now available via the Related Articles linked below.

Workaround:
Remove /usr/openv from any exclude lists on the VMware Backup Hosts.

If this solution is not feasible, please contact Symantec technical support, referencing this document ID and Etrack 3470734 to obtain an Emergency Engineering Binary (EEB) replacement library containing a fix for this issue.

Best Practices:
Symantec strongly recommends the following best practices
1. Always perform a full DR backup prior to making any changes to your environment.
2. Always make sure that your environment is running the latest version and patch level.
3. Perform periodic "test" restores.
4. Subscribe to technical articles.

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Supplemental Materials

SourceETrack
Value3465407
Description

If /usr/openv is in the exclude list, VMware backups finish with status 0 but do not back up any data




Article URL http://www.symantec.com/docs/TECH215894


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