[CentOS] Any downside to mount -o noatime?

Fri Feb 11 02:22:55 UTC 2022
Kenneth Porter <shiva at sewingwitch.com>

--On Thursday, February 10, 2022 8:49 PM -0500 Jon LaBadie <jcu at labadie.us> 

> atime updates that occur when {m,c}time are updated add
> no additional burden.

Understood. If that's the only time it happened, I would be happy with that.

> So you are concerned about a single "possible" inode update
> once a day?

I'm using BackupPC to do rsync-based backups of all my systems. The 
"incremental" backups look only at size and timestamp changes. The 
less-frequent "full" backups checksum all my files. That means an extra 
write for every file that gets checked.

I'd love to have a version of relatime that only did the first kind of 
update, when ctime or mtime changed but not when 24 hours had passed.