On 02.02.18 17:32, Joel Roth wrote: > Probably you all have something much better, but for the > sake of discussion, and will post my humble offering.
Not better, but a data point for anyone else backing up to a flash drive, which is convenient for the off-site backup. Rsync compares checksums between source and destination, reprocessing a single write fail, and erroring on a second. BUT, if the flash drive has bit drop-outs after time, then that isn't detectable by rsync. Files not updated in a subsequent backup remain corrupted, and any updated are simply overwritten, and liable to repeated bit loss. OK, I've only ever had one flash drive which started to lose bits (in 6% of files before I detected it), but my backup script now does a diff -qr on the backup after the rsync. It's a bit time consuming, but you don't have to watch it. Erik _______________________________________________ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng