Re: Backup plan needs advice.
2003-06-25 17:32:00
Jon LaBadie wrote:
On Tue, Jun 24, 2003 at 02:25:20PM -0700, bao wrote:
Jon LaBadie wrote:
strategy "string"
...
incronly
Only do incremental dumps. `amadmin force' should
be used to tell Amanda that a full dump has been
performed off-line, so that it resets to level 1.
It is similar to skip-full, but with incronly full
dumps may be scheduled manually. Unfortunately,
it appears that Amanda will perform full backups
with this configuration, which is probably a bug.
Also, another dumptype option entry was this paragraph:
skip-full "boolean"
Default: no. If true and planner has scheduled a full
backup, these disks will be skipped, and full backups
should be run off-line on these days. It was reported
that Amanda only schedules level 1 incrementals in this
configuration; this is probably a bug.
As pointed out. The two paragraphs above have "a bug". I prefer not to
mess with those options. :)
Well, they say "probably". Maybe someone was saying this program/feature
works this way. Probably not only way it could have been designed
and maybe not the best choice for the design -- thus a "bug".
Example, according to the man page for standard unix sort command
has been the line "silently truncates lines longer than xxxx bytes".
It could be called a "bug". But in design and implementation,
not a defect in coding.
Plus, the comments may be a holdover from early releases never updated.
There are comments a few years back suggesting the "bug" was fixed.
BTW you could also consider having your "full config" dump to real tape
or to a separate set of "file tapes". Then you could run your daily
config as a normal amanda config doing a mixture of full and incrementals
each day. If you run the full dump to real tape and the clerical person
forgets the tape, it can collect on the holding disk for later amflush.
Otherwise you will have to develop your own procedures for moving the
dumps and the indexes and the ... to tape and later, if needed, you own
procedures for recovering them and the indexes and ... from the tape
for am{recover|restore}.
I have some good news and think I should share it.
With my two configs and with "record yes" in the weekly, the daily
incrementals are able to see
and follow the most recent weekly full backup. That says that Jon's
suggestion of using one config,
inc-only, and forcing a level 0 for the day of the full backup would
also work.
I just tested it with another machine, and will have to wait if anything
unexpected will happen
to the production server.
So going on to investigating how to copy what Amanda needs to tape.
Thanks guys.
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