Optimized Synthetic Backups failing with error 79 for automounted file systems
Optimized Synthetic Full backups failing with error 79 for all automounted file systems
Whiles using multistreams and ALL_LOCAL_DRIVES.
Regular Full backups and Incremental backups completed successfully.
When trying to generate a Synthetic Full backup , all the streams generated for automounted file systems will fail with error 79.
Example:
# cd /apps/scripts
/apps/scripts
# ls -ls
total 8
4 -rw-r--r-- 1 root system 1676 Nov 07 2005 csxx.dsm
4 -rw-r--r-- 1 root system 1649 Nov 07 2005 ksxx.dsm
0 drwxr-xr-x 2 root staff 256 Jan 05 2007 standard2
# df -k .
Filesystem 1024-blocks Free %Used Iused %Iused Mounted on
/export/apps/scripts 1441792 331472 78% 36201 32% /apps/scripts
Note that the filesystem /export/apps/scripts (to the left) has been auto mounted or manually mounted as /apps/scripts
The original file system /export/apps/scripts is backing up and synthesizing successfully.
/export/apps/scripts => /apps/scripts are the same
Netbackup is seeing /apps/scripts as an unsupported image format for Optimized Synthetic Full backups , resulting in only this stream failing with error code 79.
Any suggestions how to get rid of that error ?
How to indicate Synthetic full backup to ignore automomounted filesystem as a regular full or incremental backup will do ?
Comments 3 Comments • Jump to latest comment
Netbackup does not follow file system it think is are "remote" e.g. NFS
You need to check mark the "follow NFS" option in the policy to let Netbackup follow automounted directories.
See this tech note:
http://www.symantec.com/docs/HOWTO33438
Assumption is the mother of all mess ups.
If this post answered your'e qustion - Please mark as a soloution.
I think this problem is not related with NFS.
So far the only way we have found to get rid of this error is to regenerate a regular full backup. After that the synthetic backups will work for a while. Was advised to schedule a regular full backup at least every other month to keep these errors away.
The problem is that we were using Synthetic backups to avoid doing the regular ones as for they take days to complete.
Which version of NetBackup are you using?
Have you already tried to exclude this loopback mount by exclude_list?
Authorized Symantec Consultant(ASC) Data Protection in Tokyo, Japan
Would you like to reply?
Login or Register to post your comment.