On Tue, Jan 23, 2007 at 01:16:34AM -0600, Frank Smith wrote: > Yogesh Hasabnis wrote: > > --- Frank Smith <[EMAIL PROTECTED]> wrote: > > > >> Yogesh Hasabnis wrote: > >>> Hi All, > >>> > >>> As per the AMANDA faqs, "AMANDA spreads full > >> backups > >>> along the dumpcycle, so you wont' have any > >> full-only > >>> or incremental-only runs." > >>> > >>> What I understand from this is that if you have > >>> multiple filesystems on multiple hosts to be > >> backed up > >>> in an AMANDA dumpcycle, AMANDA will take care of > >>> spreading the full backups of different > >>> areas/filesystems on different days so that it is > >> not > >>> overloaded on weekends for doing the full backups > >>> (Correct me if I am wrong). However in my case, I > >> have > >>> only one area or one filesystem on one host to be > >>> backed up. Data created by all users which needs > >> to be > >>> backed up is stored by them under one directory on > >> a > >>> central file server, which will be backed up by > >>> AMANDA. Now in this case, how will AMANDA spread > >> the > >>> full and the incremental backup load (because it > >> has > >>> only one area to be backed up in the whole > >> dumpcycle)? > >> > >> Yes, if you have only one DLE Amanda obviously can't > >> spread > >> its full dump over several days. You could use tar > >> instead > >> of dump, and make each subdirectory a separate DLE, > >> then the > >> fulls could be spread out. > > > > Thanks for the reply. So if I only have one DLE, will > > the full backup always take place on a particular day > > and will only incremental backups be taken on the > > remaining days? Or will it be handled in some > > different way? > > dumpcycle is just the maximum time between fulls. Amanda > often schedules them sooner if it thinks it will level out > daily tape usage. I don't know how it handles a single > DLE, as that is not really what it was designed for. > If you really want it to always be the same day, you > might be able to force it with a maxpromoteday setting, > but it may be easier to just use two configs, an always-full > one that runs on the prefered day, and an incremental-only > one that runs on the other days. >
I'm nearly certain that an amadmin "force" will override the increment only setting. Given that, you could have a single config that does increment only and a cronjob that once a week does the amadmin force to generate the full dump on the day desired. The main problem with such schemes is the lack of a full dump if the system was down when it was desired. Normal amanda scheduling would realize one was missed and automatically schedule the full dump on a "non-standard" day of the week. -- Jon H. LaBadie [EMAIL PROTECTED] JG Computing 4455 Province Line Road (609) 252-0159 Princeton, NJ 08540-4322 (609) 683-7220 (fax)
