Consider raid + zfs + daily snapshoots בתאריך יום א׳, 17 ביולי 2022, 16:50, מאת Shlomo Solomon < shlomo.solo...@gmail.com>:
> I recently lost some files because of a bad disk - hardware problem. > > I do regular backups so I was not really worried, but I now see that I > have a problem with my backup strategy so I'd like to know how others > handle/prevent what happened to me. > > I backup files using rsync and I basically have 2 types of backups. > > My most important files are backed up every night. I do incremental > backups using: rsync -aqrlvtogS --ignore-errors --backup > I keep about 4 months of backups. So if a file is damaged, > missing or accidentally deleted, I can find a good file - even if, for > example I screwed up the file and only discovered the problem a few > days later. > > BUT, all the rest of my files - music, videos, pictures, etc are backed > up daily and weekly on 2 different physical drives using: > rsync -qrlvtogS --delete --ignore-errors > I use --delete to prevent accumulating garbage on my backup disks. > > So here's the problem: Because of a hardware problem, several files on > one of my disks were lost. As a result, the daily backup script > "thought" that those files should be deleted from the daily backup. > Unfortunately, I did not notice the problem. A few days later, those > same files were also deleted from the weekly backup. So they are lost. > > So on one hand, I need --delete to avoid keeping backups of old > garbage, but on the other hand, the --delete option does not know if I > deleted the file or if it's gone because of a hardware problem. > > > > -- > Shlomo Solomon > http://the-solomons.net > Claws Mail 3.17.5 - KDE Plasma 5.18.5 - Kubuntu 20.04 > > _______________________________________________ > Linux-il mailing list > Linux-il@cs.huji.ac.il > http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il >
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