From owner-freebsd-current@freebsd.org Wed Jul 6 02:16:45 2016 Return-Path: Delivered-To: freebsd-current@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 78091B20C7E for ; Wed, 6 Jul 2016 02:16:45 +0000 (UTC) (envelope-from nathan.bosley@gmail.com) Received: from mail-yw0-x230.google.com (mail-yw0-x230.google.com [IPv6:2607:f8b0:4002:c05::230]) (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 36F4D1322; Wed, 6 Jul 2016 02:16:45 +0000 (UTC) (envelope-from nathan.bosley@gmail.com) Received: by mail-yw0-x230.google.com with SMTP id b72so77373789ywa.3; Tue, 05 Jul 2016 19:16:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=9IAZaFm1tMYdCRVWFBLA7Wiz1i6s5hU/SC/ycptTa48=; b=CbSY8WTAHvTUUcbf3f2WEMx+xzPJNca8obsEtKC9Vn7mBwtIngaRf7oNN3YIlofiN0 aU8hDr3MrhSlIsf/EgT7EnWjRDeJBv2QLOFDLCl194Js613aW5sspcN2tWL7JnjDFvBn jL2GW+0HLSpzWOx6c7sv0QdAGWbVm9ZRto3O4fVBHC4RXUBEJMdT5f/sqNy6jMrs7OLx p4sFg6NkifBb7yQnI57fGfty2MhB8EKzfqUR/UVs4Cjvl1b0rmgLhCnjK1Xc5+SsaQLl E3MjcPUckfMPAOAWpBlLt1AmGqIcIRQlztAG2uTqecKVzHYhT/nNQ3XL+nuzpAGWLbD4 lsAg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=9IAZaFm1tMYdCRVWFBLA7Wiz1i6s5hU/SC/ycptTa48=; b=YHKTELNrToLzBgBe/v6O/qTRXVcnsN49QtyojCOqeIPJSPgqQfXOcF1wsh/TBxCN4d PWnEBBOVQHV/7DWDCiA/A0rzdWoTyChfCU6PnifCntMv2IqjDXHbymBMfNSU8MP/joOy cY87oCByHxCMAs2TTqPhFJOu0LRN39+lg650LT07rQ6EDnGHgOAr/kPHzBOL1PCQCHE5 jMqCbLr7yuYlBhkwsPx99xubz6YzOs6ZoBR74h18b0EXRjYoq51jloN+oc4k7SwTBpdp uNUk27MwMxXJ12Qm8tG/PgEcehfyhjmk92LlASf+hVUUixpw1iOtg6++W2S47p6hxVIh 9kaQ== X-Gm-Message-State: ALyK8tIWNvDr7IcjHR0f5oC/AGBciS2X1bTZVJ33j7zByXDBbtlYzcPzSZnL9FJHnTfqn6yNETeO6TUljWfpXQ== X-Received: by 10.13.250.194 with SMTP id k185mr3373078ywf.317.1467771404138; Tue, 05 Jul 2016 19:16:44 -0700 (PDT) MIME-Version: 1.0 Received: by 10.37.97.8 with HTTP; Tue, 5 Jul 2016 19:16:43 -0700 (PDT) In-Reply-To: <7255f240-8cf0-0a62-89be-2a0970b67063@freebsd.org> References: <975e5ae2-2090-94cd-49c0-eee9866ff02b@freebsd.org> <145180d1-43c9-d894-9221-b210d641955d@freebsd.org> <7255f240-8cf0-0a62-89be-2a0970b67063@freebsd.org> From: Nathan Bosley Date: Tue, 5 Jul 2016 22:16:43 -0400 Message-ID: Subject: Re: Setting sysctl vfs.zfs.arc_max failed: 22 To: Allan Jude Cc: freebsd-current@freebsd.org Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.22 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Jul 2016 02:16:45 -0000 OK, I follow you now. Thanks for the explanation. I will try that later tonight or tomorrow. On Tue, Jul 5, 2016 at 9:45 PM, Allan Jude wrote: > On 2016-07-05 21:32, Nathan Bosley wrote: > > I think in about 4 - 5 hours I can show what values I'm using in > > loader.conf under, say, r302264 and r302265 for comparison. I'm not 100% > > sure that the problem arose for me in r302265; I merely suspect it. > > > > On Tue, Jul 5, 2016 at 9:25 PM, Allan Jude > > wrote: > > > > On 2016-07-05 20:27, Steven Hartland wrote: > > > Ahh right, let me check that. > > > > > > On 06/07/2016 00:51, Nathan Bosley wrote: > > >> I actually have this same problem. > > >> I'll send more details when I get home later. > > >> > > >> I think the problem started for me after r302265. > > >> Before that, I can set vfs.zfs.arc_max and vfs.zfs.arc_min in > > >> loader.conf. > > >> After r302265, setting either vfs.zfs.arc_max or vfs.zfs.arc_min > in > > >> loader.conf results in the EINVAL errors in 'dmesg': > > >> > > >> Setting sysctl vfs.zfs.arc_max failed: 22 > > >> Setting sysctl vfs.zfs.arc_min failed: 22 > > >> > > >> But setting vfs.zfs.arc_meta_limit in loader.conf works fine. > > >> > > >> But I did notice that using 'sysct' or sysctl.conf for > vfs.zfs.arc_max > > >> and vfs.zfs.arc_min works. > > >> I only have problems with setting them now in loader.conf. > > >> > > >> Like I said, I'll try to send output from my setup later. > > >> > > >> Thanks. > > >> > > >> On Tue, Jul 5, 2016 at 6:10 PM, Steven Hartland > > >> > > >> > wrote: > > >> > > >> What is it currently? > > >> > > >> Just had a quick play here: > > >> sysctl vfs.zfs.arc_max > > >> vfs.zfs.arc_max: 32283127808 > > >> sysctl vfs.zfs.arc_max=32283127807 > > >> vfs.zfs.arc_max: 32283127808 -> 32283127807 > > >> sysctl vfs.zfs.arc_max=32283127808 > > >> vfs.zfs.arc_max: 32283127807 -> 32283127808 > > >> > > >> Error 22 = EINVAL so I suspect you're requesting a value > > which one > > >> of the following: > > >> * < arc_abs_min > > >> * > kmem_size > > >> * < arc_c_min > > >> * < zfs_arc_meta_limit > > >> > > >> Regards > > >> Steve > > >> > > >> On 05/07/2016 22:56, Eric van Gyzen wrote: > > >> > > >> Steven and -current: > > >> > > >> I just updated to r302350 with a GENERIC kernel config. > > I see > > >> this in > > >> dmesg: > > >> > > >> VT(efifb): resolution 1024x768 > > >> Setting sysctl vfs.zfs.arc_max failed: 22 > > >> CPU: Intel(R) Xeon(R) CPU E5-1650 v3 @ 3.50GHz > > >> (3491.98-MHz K8-class > > >> CPU) > > >> > > >> The relevant parts of /boot/loader.conf are: > > >> > > >> zfs_load="YES" > > >> vfs.zfs.arc_max="6442450944" > > >> > > >> Let me know what other information you need. > > >> > > >> Cheers, > > >> > > >> Eric > > >> > > >> > > >> _______________________________________________ > > >> freebsd-current@freebsd.org > > > > > > > > >> mailing list > > >> https://lists.freebsd.org/mailman/listinfo/freebsd-current > > >> To unsubscribe, send any mail to > > >> "freebsd-current-unsubscribe@freebsd.org > > > > >> > >" > > >> > > >> > > > > > > _______________________________________________ > > > freebsd-current@freebsd.org > > mailing list > > > https://lists.freebsd.org/mailman/listinfo/freebsd-current > > > To unsubscribe, send any mail to " > freebsd-current-unsubscribe@freebsd.org > > " > > > > > > I think the issue might be that the default value of arc_min is > higher > > than when the user is trying to set arc_max to. In that case we might > > want sysctl to lower arc_min instead of giving an error? > > > > It would definitely be a POLA violation to have to set arc_min lower > to > > be able to have existing lines that set arc_max in loader.conf work > > correctly. > > > > -- > > Allan Jude > > > > > > The problem is related to Steven's commit, which makes it so you can > adjust arc_max and arc_min at runtime. Part of this change put in a > requirement that the new arc_max you are trying to set, must be less > than the current arc_min. When you first boot, i think the default is > arc_max = all ram save 1GB, and arc_min = 1/8 of that. > > So if you try to set your arc_max to 1/8th or less, it will fail with > that error 22 (this should be fixed). > > You can work around it temporarily by setting a lower arc_min first. > > > -- > Allan Jude > >