BUG REPORT: After upgrading to NetBackup 7.5, VMware Backups hang when attempting to write to MSDP storage pools.

Problem

After upgrading to NetBackup 7.5, VMware Backups hang when attempting to write to MSDP (media server deduplication pool) storage pools. 

Cause

This problem is triggered by an invalid short_blk being received.  When this occurs, the bptm log will show the following:

A short_blk greater than zero will be received during fbu_check_filheader:

09:35:35.907 [6568.3760] <2>  1123532:bptm:6568:nbuhost: [DEBUG] PDSTS: fbu_check_filheader: next_streamoffset=30664, short_blk=456, buflen=976
 

...after which  an UNKNOWN fh_magic is recorded:

09:35:35.907 [6568.3760] <16> 1123532:bptm:6568:nbuhost: [ERROR] PDSTS: fbu_check_filheader: UNKNOWN fbu_fh->fh_magic=0x0

Finally, a software error is recorded:

09:35:35.907 [6568.3760] <16> 1123532:bptm:6568:nbuhost: [ERROR] PDSTS: fbu_check_imgheader: exit (2060022:software error)
09:35:35.907 [6568.3760] <16> 1123532:bptm:6568:nbuhost: [ERROR] PDSTS: fbu_scan_buf: fbu_xlate() failed (2060022:software error)
09:35:35.907 [6568.3760] <16> 1123532:bptm:6568:nbuhost: [ERROR] PDSTS: fbu_scan_buf: err=(2060022:software error) can't process FBU format, ignore

Solution

The formal resolution to this issue (Etrack 2717247) is included in the following release:

  • NetBackup 7.5 Maintenance Release 3 (7.5.0.3)

Information on NetBackup 7.5.0.3 availability is now available at the link provided in the Related Article linked below.


Applies To

NetBackup version 7.5

MSDP Storage Storage pools in use.

VMware client backups.

Terms of use for this information are found in Legal Notices.

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