Environment
NetWare 6.5 sp5
Novell GroupWise
IBM Tivoli tape software
Situation
Files would randomly be skipped from the backup with the
following errors:
Date/Time
Message
-------------------- ----------------------------------------------------------
04/24/2006 16:02:07 ANE4037E (Session: 4688, Node: GWNODE3) File
'GWVOL3:/INFOSYST/OFUSER/USER0F4.DB' changed during
processing. File skipped. (SESSION: 4688)
04/24/2006 16:02:08 ANE4037E (Session: 4688, Node: GWNODE3) File
'GWVOL3:/INFOSYST/OFUSER/USER0L4.DB' changed during
processing. File skipped. (SESSION: 4688)
-------------------- ----------------------------------------------------------
04/24/2006 16:02:07 ANE4037E (Session: 4688, Node: GWNODE3) File
'GWVOL3:/INFOSYST/OFUSER/USER0F4.DB' changed during
processing. File skipped. (SESSION: 4688)
04/24/2006 16:02:08 ANE4037E (Session: 4688, Node: GWNODE3) File
'GWVOL3:/INFOSYST/OFUSER/USER0L4.DB' changed during
processing. File skipped. (SESSION: 4688)
These errors would appear primarily on GroupWise database
files. The files were being updated during the backup
so Tivoli would skip these files because of the change. This
is perfectly normal to have GroupWise db files updated during a
backup. Especially with heavy usage. These databases are
constantly in use by GroupWise. Tivoli (TSM) product
does not backup files that are changing, i.e. filesize, attributes,
permissions, etc during the backup. Tivoli works by first looking
at the file, its size and then it's attributes. It then
compares this information with its backup database to see if
the file has been modified since it was backed up last. This works
on the assumption that the file is not modifed during this check.
There is no lock issued for the file during this check. If
the file is modifed again during this check
then it does not backup the file and will
display the above error, after x number of
retries. Tivoli can be configured to attempt a number of
retries to try and backup the file with the changingretries = #
parameter. Tivoli can also be configured to do a shared
dynamic mode backup, meaning it will backup the file even if
attributes have changed on it.
Resolution
Tivoli can be configured to do a shared dynamic mode backup that
may help. The setup syntax for Tivoli would need to be obtained
from IBM.