From owner-freebsd-fs@freebsd.org Fri Nov 18 14:31:51 2016 Return-Path: Delivered-To: freebsd-fs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3DCC4C48C7C for ; Fri, 18 Nov 2016 14:31:51 +0000 (UTC) (envelope-from kent.kuriyama@gmail.com) Received: from mail-yw0-x22c.google.com (mail-yw0-x22c.google.com [IPv6:2607:f8b0:4002:c05::22c]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id F4011A2 for ; Fri, 18 Nov 2016 14:31:50 +0000 (UTC) (envelope-from kent.kuriyama@gmail.com) Received: by mail-yw0-x22c.google.com with SMTP id i145so165573434ywg.2 for ; Fri, 18 Nov 2016 06:31:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:from:date:message-id:subject:to; bh=bNo+QNLykdz/wdXr8z4VYr36vdcdBQDdQJwFtspQak0=; b=eQ4OXgaJZQ4gH9VhoZY98a4SkUxP3VCArhR9S9rUZW0t5Z1QK0HdKLPVYVIVGc/xDi 9LtJuyo+J5jkKze+gQ7jgLYHkMnF6cgg9A4uq3+f3aVjgb55otokoPlhDBQrD4FxIcAP 2LeqlPirpWXQ46Kf3G2ahVhhIiigfk3rIzxuH56w6XWhU5k1tpoUzrgysQvR8YnTpHXv K+CDs9eXD9FkJzilBUP6Nm/bxMZLxkJEcd0XgVIaBCq7TpbrLvO9anQjXsPjQeEWclqV JoYLmnU7pgnD4y/1sRIyXBIG4sHdYG+D1g4K/orad1kDWfHnecCwOfg9JsiT5kTazhwo s0Vg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=bNo+QNLykdz/wdXr8z4VYr36vdcdBQDdQJwFtspQak0=; b=aTpa0nP6E44EAjjTwGBXjag3kBJbs6CE6o29+3/kWvwQkHySFOlhd3YW0FsItyuc/1 2esvrA4xQyZj69yonDuV3ggwzcDb/C4OuhxDMVE+cVTx9Rz6xMKxk6YFzKUBwCTL9XnW YNsyTKsWeVI8DZJIqebmRLOaba61b+H3HWKtH1IwB9MGlVRsBHxh4pO1s9nU45Oihuek vZ5mDSILCo+E9XMyV54x+BBPgK9U0ObBQAjQTa0MgO+gsuWM4E0hh8vSmE2DYiqxh7RB fHezKWXjIJgBqpVSNe2NshEdhRNrFNQVJKIkqOu2w7JMqutq3eVFo9jlWdCtrpgOSBLq cCEQ== X-Gm-Message-State: ABUngvdYpZygEXF0d+MixwnhdfM/rYKQv7zcj1JDLqiZY7if9D7hPLmDfxF9L30/iy9LXp6S+lZyrlCut6dnOA== X-Received: by 10.13.194.66 with SMTP id e63mr7358882ywd.133.1479479510123; Fri, 18 Nov 2016 06:31:50 -0800 (PST) MIME-Version: 1.0 Received: by 10.37.170.131 with HTTP; Fri, 18 Nov 2016 06:31:49 -0800 (PST) From: Kent Kuriyama Date: Fri, 18 Nov 2016 04:31:49 -1000 Message-ID: Subject: ZFS question: "L2ARC is disabled" To: freebsd-fs@freebsd.org Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.23 X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Nov 2016 14:31:51 -0000 I have set up a ZFS pool (zpool0) with both zil and L2ARC. The output of zpool status is: ------------------------------------ zpool status pool: zpool0 state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM zpool0 ONLINE 0 0 0 da0p2 ONLINE 0 0 0 logs ada0p8 ONLINE 0 0 0 cache ada0p9 ONLINE 0 0 0 errors: No known data errors ---------------------------------- When I run "zfs-stats -v" I get the message "L2ARC is disabled". ARC is healthy. Can someone please tell me what I am doing wrong to prevent L2ARC from being enabled? I am running a qbittorrent on a FreeBSD 11.0p3 system and expected to benefit from L2ARC because of the intense read activity. Both the ZIL and L2ARC are on an SSD partition. Thanks, Kent