On macOS Sierra I am seeing the following logged every 3 seconds.
logd: _handle_cache_delete_with_urgency(0x7f939281eb80, 3, 0) logd: _volume_contains_cached_data(is /private/var/db/diagnostics/ in /) - YES logd: 186377856 bytes of purgeable space from log files logd: _purge_uuidtext only runs at urgency 0 (3) logd: 0 bytes of purgeable space from uuidtext files
I rebooted into Recovery mode (Command-R during boot) and ran Disk Utility First Aid, with no change in behaviour.
With each run of First Aid I received the following in the Disk Utility list of messages:
resizing core storage logical volume structures ... resized core storage logical volume ... growing file system
Which seems odd that each run of First Aid would cause a change to the core storage system.
I'm concerned all of these messages in the log suggests I may have a disk error. Can I safely ignore these? Is my disk failing, or is this normal to have my log files flooded with messages every 3 seconds?