On Mon, 21 Sep 2009 18:20:53 -0400 Richard Elling <richard.ell...@gmail.com> wrote:
> On Sep 21, 2009, at 2:43 PM, Andrew Deason wrote: > > > On Mon, 21 Sep 2009 17:13:26 -0400 > > Richard Elling <richard.ell...@gmail.com> wrote: > > > >> You don't know the max overhead for the file before it is > >> allocated. You could guess at a max of 3x size + at least three > >> blocks. Since you can't control this, it seems like the worst > >> case is when copies=3. > > > > Is that max with copies=3? Assume copies=1; what is it then? > > 1x size + 1 block. That seems to differ quite a bit from what I've seen; perhaps I am misunderstanding... is the "+ 1 block" of a different size than the recordsize? With recordsize=1k: $ ls -ls foo 2261 -rw-r--r-- 1 root root 1048576 Sep 22 10:59 foo 1024k vs 1130k -- Andrew Deason adea...@sinenomine.net _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
