More info regarding this:
It didn't seem important at the time as the job finished
with a status of 1, which has pretty much always meant that it completed with
the exception of a few files due to open file issues, but in this case may mean
more. The errors in the activity log indicated much (if not all) of the Server
2003 Shadow Copy Components had not backed-up, with entries like
this:
11/03/2009 8:55:04 AM - Warning bpbrm(pid=8112) from client
server1.dsto.defence.gov.au: WRN - can't open object: Shadow Copy
Components:\System State\System Files\System Files (BEDS 0x80042301: 0x80042301
(2147754753)
Looking in more depth, it seems the Microsoft Software Shadown Copy
Provider service had hung, and I found ntbackup of system State was not running.
I terminated this service, did a test of ntbackup SS and it seems OK again.
I'm
wondering if this service might have been the problem, and that in this case, a
status of 1 meant the files had not been backed-up successfully as far as NBU
was concerned. I'm re-running the Diff-Incremental backup and see if this makes
any difference.
I've recently moved
some data to a different volume and did a full backup after the move. I
then updated the permissions of the data in the new volume and as expected,
the incremental backup backed-up the data in the new volume.
However, the
scheduled incremental that ran last night is still going and it seems to be
backing up all the data in the new volume, almost like it had never known it had
been backed-up incrementally the previous night. I would expect some of the
files to have been changed since the first incremental but not the whole
lot.
I'm guessing this
may have something to do with archive bits and NBU thinks the files haven't
already been backed-up incrementally.
Why would NBU not
think the files have been backed-up and keep backing-up all the same files twice
in a row?
Cheers,
---------------------------------------------------------------------
Tim Wilkinson I.T. Support Officer Science Corporate
Information Systems Defence Science &
Technology Organisation Department of
Defence
Tel: (02) 93810065 Fax: (02) 93810011
Email: tim.wilkinson AT dsto.defence.gov DOT au
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