On 2010-02-17 09:32, Torfinn Ingolfsen wrote:
On Wed, 17 Feb 2010 09:19:49 +0100
Bartosz Stec<bartosz.s...@it4pro.pl> wrote:
So here's my reply (last line seems most interesting ;) :
[...snipped...]
Illegal division by zero at ./arc_summary.pl line 242.
FWIW, I also got this line when I ran this script on my idle zfs server.
I'm not a PERL programmer (or programmer at all ;), but what I see is
script doesn't check if L2ARC is used at all, so it will always try
compute these lines:
printf("\tL2 Hit Ratio:\t\t\t%0.2f%%\t%d\n", 100 * ( $l2_hits / (
$l2_hits + $l2_misses )), $l2_hits );
printf("\tL2 Miss Ratio:\t\t\t%0.2f%%\t%d\n", 100 * ( $l2_misses / (
$l2_hits + $l2_misses )), $l2_misses );
printf("\tL2 Feeds Ratio:\t\t\t%0.2f%%\t%d\n", 100 * ( $l2_feeds / (
$l2_hits + $l2_misses )), $l2_feeds );
Without active L2ARC it will always generate divide at zeo error, so it
seems that additional check for usable L2ARC values is needed at first
place.
--
Bartosz Stec
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