Martin Simmons wrote: >>>>>> On Wed, 27 Jun 2007 09:46:01 -0400, Chris Hoogendyk said: >>>>>> >> Martin Simmons wrote: >> >>>>>> Because it is not a bug, it is the way things work. >>>>>> >>>>>> >>>> "... given standard backup algorithms ...." >>>> >>>> >>>> >>>>>> Many commercial >>>>>> backup softwares have exactly the same problem. >>>>>> >>>>>> >>>>> I would never use or even pay such a backup software. >>>>> >>>>> >>>> Some of those commercial backup packages run into tens of thousands of >>>> dollars. There are only a couple I'm aware of which do it the "right way" >>>> >>>> Fortunately in bacula, 90% of the work is already done - there is a file >>>> database in place. It is mainly a matter of hammering out the right method >>>> and cutting code - something I'm afraid I'm no good at. >>>> >>>> >>>> >>>>> Once the GUI is done for the "lazy" people, they will find out that >>>>> bacula is missing a reliable and professional reason. >>>>> >>>>> >>>> See above. There are very few enterprise-grade packages which can do >>>> "snapshot" restores via incrementals and they cost a great deal of money. >>>> >>>> >>> Ironically, lots of open source unix backup systems do implement it! >>> >>> __Martin >>> >> "lots"? >> >> for example? >> > > star (http://freshmeat.net/projects/star/) > dump on Linux > dump of FreeBSD > GNU tar (well, it tries, but there are bugs) > ufsdump on Solaris (OK, this is only recently open source) > + all the wrapper scripts for the above
Ahhh. I see what you mean by "lots." ;-) Note that those are all one-off "backup this partition or directory now" programs. None of them are integrated backup systems like bacula or amanda. The list was just talking about "dump" being broken on Linux. GNU tar "tries"? star is a tar variant that has been stuck in 1.5 alpha versions for over 2 years. I actually found an old star-users email talking about using star through amanda so they could run unattended. I also found some discussions on that list arguing that GNU tar actually did work. So, we're left with ufsdump on Solaris and any wrapper scripts for it? And possibly dump on FreeBSD? And maybe GNU tar. None of those are integrated backup systems. However, they all plug into amanda. So, the implication is that amanda works, giving us "lots"=1. Any other open source integrated backup systems? I've never had much call to do full recoveries with incrementals added on. I guess Sun hardware with mirroring just doesn't fail often enough. ;-) But, I'm running an experiment right now, trashing a file system that's my development space just so I can use ufsrestore to do a full and incremental restore. When it comes to backup and restore, I prefer hands on experience. Ahh, done already. Cool. It worked. Files and directories removed before the incremental ufsdump were restored by the full ufsrestore and then removed by the incremental ufsrestore. Files and directories moved before the incremental ufsdump were restored in their original position by the full ufsrestore and then moved to their new position by the incremental ufsrestore. I didn't actually know that that worked before. Nice to know. 8-) --------------- Chris Hoogendyk - O__ ---- Systems Administrator c/ /'_ --- Biology & Geology Departments (*) \(*) -- 140 Morrill Science Center ~~~~~~~~~~ - University of Massachusetts, Amherst <[EMAIL PROTECTED]> --------------- Erdös 4 ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
