noatime, isn't that a UFS specific mount option??
Can this be done in mount_nfs??
On 2015-05-13 21:36, David Brodbeck wrote:
On Wed, May 13, 2015 at 4:33 AM, Udo Grabowski (IMK) <[email protected]>
wrote:
On 13/05/2015 09:20, Hans J. Albertsson wrote:
This is what it looks like on the FreeNAS box
NAME AVAIL USED USEDSNAP USEDDS
USEDREFRESERV USEDCHILD
Tank/cifs 8.93T 1.45T 9.18M
1.45T 0 0
Tank/cifs@transfer_prep - 8.24M - -
- -
Tank/cifs@transfer1 - 966K - -
- -
Tank/cifs@now - 0 - -
- -
Tank/[email protected] - 0 - -
- -
I'd like to see what data is to blame for the 966K reported for
transfer1 as "USED"
These are usually access time updates, since the snapshot preserves
access times. We have a few Megs each day on heavily accessed data.
If you can mount the filesystem 'noatime', that would clear it up pretty
quickly. I generally do this as a matter of course, these days -- very few
things need atimes and the penalty of adding a write to every read isn't
worth it. The only things I can think of offhand that might need atime are
mail spools and NNTP.
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