Re: data, metadata, backup, and archive integrity and correction
Date: Fri, 23 Sep 2022 23:37:49 UTC
On Fri, 2022-09-23 at 15:42 -0700, David Christensen wrote: > All versions of the photograph file opened correctly with a viewer. > All photographs looked the same on the screen. But, at least one file > is corrupt. Which file(s)? I never figured it out. I kept all > versions of the file. (And, I have kept all camera media.) Hi David, I'm a digital photographer newbie. I started digital photography in 2020. For developing photos and more editing, graphic art, I'm using a Linux desktop machine, but most of the times an iPad Pro. I copy all my cam's SD data to my Linux desktop PC, my iPad Pro and to at least two USB HDDs (ext4 and hfs+ without journaling) in the first place. Before I format a SD again, I take a look at all copied photos using a viewer. The photo backup/archiving is completely "decoupled" from all other backup/archiving. Non-destructive editing of photos, done on different machines, in my experiences results in chaos. Way before verifying a probably corrupted backup, I already loose control. For example, it's already impossible to gain control over naming files of edited photos. Sharing edited photos among apps running on iPad OS already is a PITA, let alone sharing photos among operating systems. I've got tons of unneeded duplicates of some photos. Deleting a duplicated photo might render separately stored meta-data useless. Regards, Ralf