My system is running on SSD on top of LVM logical volume, formatted to
ext4. I'm using
noatime option at my
fstab for this partition.
I'm going to do incremental backups of system partition using LVM snapshot feature and GNU tar.
As I see in documentation of GNU tar,
Incremental dumps depend crucially on time stamps, so the results are unreliable if you modify a file's time stamps during dumping (e.g., with the `--atime-preserve=replace' option), or if you set the clock backwards.
Is it safe to do incremental backup using GNU tar if filesystem is used with
noatime mount option?