[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

Re: Disabling atime



John Reiser wrote:
Les Mikesell wrote:
I'm not sure anyone has mentioned what are probably the biggest uses of
atime:

  (2) as an indication that files have never been used and can probably
be deleted.   Since most backup operations act as a read, this tends to
not be very useful.

Serious backup systems (programs designed for the purpose) save and
restore the old value of atime.  'tar' has --atime-preserve.  cpio has
--reset-access-time.

Unfortunately those do more damage than good, since incremental backups need to be based on ctime changes and resetting the atime updates ctime.

--
  Les Mikesell
   lesmikesell gmail com


[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]