On Sep 22, 2009, at 8:07 AM, Andrew Deason wrote:
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
Well, there it is. I suggest suitable guard bands.
-- richard
1024k vs 1130k
--
Andrew Deason
adea...@sinenomine.net
_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
