Or maybe too many coffees..?! :) Ok - now I understand you loud and clear! Thanks very much!
I'll do more reading because with my new understanding of "Level 1 == all changed since the last level 0" things will make much more sense. Much appreciated! Thanks. Johan -----Original Message----- From: Paul Bijnens [mailto:[EMAIL PROTECTED] Sent: 11 October 2007 11:34 To: Johan Booysen Cc: amanda List Subject: Re: RE exclusions On 2007-10-11 12:03, Johan Booysen wrote: > When I say differential I mean a backup that contains everything since > the last full backup. Incremental for me means a backup that contains > the changed files since the last backup, whether the last one was a > full backup or not. > > If your "incremental level 1" backup is actually the same as my > "differential backup", then I've completely misunderstood that whole > issue until now. Level 0 == full backup Level 1 == all changed since the last level 0 == differential backup level 2 == all changed since last level 1 (you are trying to avoid the levels >= 2, or did I miss something?) > > :0| > > Ok, so say I want to do 1 full backup each week (Monday - Friday) and > differentials (everything changed since the last full backup) in > between, what would you suggest for these in amanda.conf? > > bumpsize > bumpdays > Bumpmult bumpdays 99999 is enough. Now Amanda waits about 273 years before considering a level 2 incremental backup. > > Or does it not quite work that way? > > I don't really understand what bumpdays, bumppercent and bumpmult do > and/or how they do it. My apologies but I must be dim or something - > tried to read up before sending this reply this but still lost > (http://www.amanda.org/docs/amanda.conf.5.html). A coffee helps, and reading it three times again... Maybe you miss one point: Amanda first runs an estimate for different levels of backup. When a level 0 backup is not due, Aanda runs an estimate for level N (the level that was run the last time), and, if bumpdays have passed since the last bump in levels, she also runs an estimate for level N+1. When the estimates are done, Amanda picks a "good" level. Settings "bumpdays 99999" accomplished what you need, I believe. (It is better than "bumppercent 100", which would maybe run an estimate for level N+1, which will later be decided as not to be "good" -- too much waste of time + machine load). > > Thanks. > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Paul Bijnens > Sent: 11 October 2007 10:07 > To: Amanda List > Subject: Re: RE exclusions > > On 2007-10-11 10:35, Johan Booysen wrote: >> Thanks fo your reply. >> >> My understanding (as far as that goes) has always been that amanda >> can > >> only do full and incremental backups? > > ?? "...only..." ?? What other kind of backup are you hinting at? > If you mean a "http://www.backup4all.com/differential-backup.php";, > then that's just an incremental level 1, which you can configure by > setting e.g. "bumppercent 100", or by setting "bumpdays 99999" > (the latter one assumes you do run at least one other full backup > within the next 273 years :-) ). > > >> >> I've been doing full backups because until now we've had the capacity >> to do that. If I switch to the way amanda should really work, then >> does that not mean that I'll get full and incremental backups, which >> will make the restore process more cumbersome in terms of the number >> of tapes needed for a restore? > > Yes, but not so complicated that a restore becomes an gigantic task. > Moreover, then chance to need to restore a recently modified file is > much larger than files that are never changed. And in that case > restore from an incremental is much faster. > > How else would you like to solve the problem of "too much data to fit > on a tape"? (besides removing the "dead files".) > > > >> >> I'm still using amanda 2.4.4. >> >> Will appreciate your advice on this. >> >> --------------------------------------------------------------------- >> - >> -- >> *From:* Cyrille Bollu [mailto:[EMAIL PROTECTED] >> *Sent:* 10 October 2007 16:57 >> *To:* Johan Booysen >> *Cc:* [email protected]; [EMAIL PROTECTED] >> *Subject:* RE exclusions >> >> >> At first sight it looks very easy: You are currently only doing >> full-daily backups. So, switch to regular incremental/differential >> backups and you'll be fine (No need to ask people doing tar files...) >> >> Also, Amanda has all the features you need to keep track of where >> your > >> files have been backuped. (eg: "index yes" in amanda.conf, amrecover, >> amtoc,...) >> >> > >> > What I want to do now is continue doing full backups every night, >> but > exclude any data that will have been backed up to the monthly >> archive > tape. >> >> IMHO, you are describing a differential backup scheme here. >> >> Cyrille > > > -- Paul Bijnens, xplanation Technology Services Tel +32 16 397.511 Technologielaan 21 bus 2, B-3001 Leuven, BELGIUM Fax +32 16 397.512 http://www.xplanation.com/ email: [EMAIL PROTECTED] *********************************************************************** * I think I've got the hang of it now: exit, ^D, ^C, ^\, ^Z, ^Q, ^^, * * F6, quit, ZZ, :q, :q!, M-Z, ^X^C, logoff, logout, close, bye, /bye, * * stop, end, F3, ~., ^]c, +++ ATH, disconnect, halt, abort, hangup, * * PF4, F20, ^X^X, :D::D, KJOB, F14-f-e, F8-e, kill -1 $$, shutdown, * * init 0, kill -9 1, Alt-F4, Ctrl-Alt-Del, AltGr-NumLock, Stop-A, ... * * ... "Are you sure?" ... YES ... Phew ... 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