From owner-freebsd-current@freebsd.org Fri Oct 4 19:37:26 2019 Return-Path: Delivered-To: freebsd-current@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id E0390137092 for ; Fri, 4 Oct 2019 19:37:26 +0000 (UTC) (envelope-from ian@freebsd.org) Received: from outbound2m.ore.mailhop.org (outbound2m.ore.mailhop.org [54.149.155.156]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 46lKs23SPTz3G4C for ; Fri, 4 Oct 2019 19:37:26 +0000 (UTC) (envelope-from ian@freebsd.org) ARC-Seal: i=1; a=rsa-sha256; t=1570217845; cv=none; d=outbound.mailhop.org; s=arc-outbound20181012; b=NDx+DvJSgKz8zdjX1qe9Ya5r+fwhxdNWh/X3pllmkA+ekZJzOItAkxz0CEZTp4Aeen3qUkrOd1nvV SfgDpg5cHyb12ihVkyaZTIA6Wj9I856UezCjOw5kpXKZMRCY3pp+SyDyvkMWaO1v+SUwgqJr5M8rv0 aa8KcCL4XGYPG3S+R27za6wZ7JF9wlQotoSXN9PxLSRtOOIgZIWvUFOCyu+rhOTu40JFw51COT8lMA utuxb2JPV0cB/TAfbJhZuM/NRPHzJdU4XC/pZbHmUR3jstehBa7eq3DOitPXXZa1XKcWrCTS6eKp3T nhMdfxkGtHR8l0JoFdGIYb72aKB0WOw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=outbound.mailhop.org; s=arc-outbound20181012; h=content-transfer-encoding:mime-version:content-type:references:in-reply-to: date:cc:to:from:subject:message-id:dkim-signature:from; bh=gYTXi2OdIzn4XSSR7bdv5mi9WglnISOg9Zptgp1/wlU=; b=hiz+Zv3rU3ERN8l5pAUaH9By9ys+KV8PzWq0GsZVsL0R/9pmbTSUumCQ4NRf8yFmcSdF9BoGnowk0 bAUY2Sw+/23Ytx3F0r978Z7SNdnayfZxInl01by71lxwhuUIQDHMqFsSniHmTYotp4okxL0TuK6WBt SIRocjlPih3IHwNfkMDNHK6VZbFxnublJkoH9RCJY9SZ0nTBUhUfQJoEzOlCyZ8Bz1Olg1vMvPgfUc nTAIUInfVIRFuM2pbZwV/VojI1DKbMm0HL4cVJdbfbBsjkdqbeRfCsPpiJYnUU3g9GZ8KKWncRQx+f HaxQdIfmi8H6NzBi0NryD43HXulSyOQ== ARC-Authentication-Results: i=1; outbound4.ore.mailhop.org; spf=softfail smtp.mailfrom=freebsd.org smtp.remote-ip=67.177.211.60; dmarc=none header.from=freebsd.org; arc=none header.oldest-pass=0; DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=outbound.mailhop.org; s=dkim-high; h=content-transfer-encoding:mime-version:content-type:references:in-reply-to: date:cc:to:from:subject:message-id:from; bh=gYTXi2OdIzn4XSSR7bdv5mi9WglnISOg9Zptgp1/wlU=; b=HgyPGvoPJSLO171fjvkOdBl5O6VtWrnHddzBzOcqd2kfwO3PiHI53hEPrKFKrNrk+tyM0ao+w1YIK BBtqnq7DcCiAa+jGtpYeZcxr62gh0BsugmAWGW+jXfJKMaG7dsdlwuPaPi0gKXrHt/OFIAQsrHZa4o pEfh6AkFXrMW6cc7pPXpUjumi4BTPGBF48YJu436hgTDKDP433YkrGQMcEZ2bNQrSvByGcXX0kVSE+ /XjzXn9LXnybmrEwAK8HFeHq1ykkWrsTyvEodJOm64GXLU1GOY2hMPthheLgnpcSLf6rYOWL2Pu7C3 G8oqp7/yqgf0WJ7BCBE9Kc6s0R6Ek2Q== X-MHO-RoutePath: aGlwcGll X-MHO-User: 62a39887-e6de-11e9-85ed-13b9aae3a1d2 X-Report-Abuse-To: https://support.duocircle.com/support/solutions/articles/5000540958-duocircle-standard-smtp-abuse-information X-Originating-IP: 67.177.211.60 X-Mail-Handler: DuoCircle Outbound SMTP Received: from ilsoft.org (unknown [67.177.211.60]) by outbound4.ore.mailhop.org (Halon) with ESMTPSA id 62a39887-e6de-11e9-85ed-13b9aae3a1d2; Fri, 04 Oct 2019 19:37:23 +0000 (UTC) Received: from rev (rev [172.22.42.240]) by ilsoft.org (8.15.2/8.15.2) with ESMTP id x94JbMPI068813; Fri, 4 Oct 2019 13:37:22 -0600 (MDT) (envelope-from ian@freebsd.org) Message-ID: Subject: Re: ZFS with 32-bit, non-x86 kernel From: Ian Lepore To: Warner Losh Cc: FreeBSD Current Date: Fri, 04 Oct 2019 13:37:22 -0600 In-Reply-To: References: <2264fde0-d386-518f-2bdb-2b86afe1faf3@blastwave.org> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.28.5 FreeBSD GNOME Team Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 46lKs23SPTz3G4C X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; none X-Spamd-Result: default: False [-1.94 / 15.00]; local_wl_from(0.00)[freebsd.org]; NEURAL_HAM_MEDIUM(-0.94)[-0.943,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; ASN(0.00)[asn:16509, ipnet:54.148.0.0/15, country:US] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.29 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: Fri, 04 Oct 2019 19:37:26 -0000 On Fri, 2019-10-04 at 13:27 -0600, Warner Losh wrote: > On Fri, Oct 4, 2019, 1:07 PM Dennis Clarke wrote: > > > On 10/4/19 10:05 AM, Andriy Gapon wrote: > > > > > > Does anyone use ZFS with a 32-bit kernel, that is also not i386 ? > > > If you do, could you please let me know? Along with uname -rmp output. > > > Thank you! > > > > > > > I don't know if that has even been attempted by anyone. The ZIL and ZFS > > log comonents require substantial amounts of memory and I am not aware > > of anyone with arm devices that have 8GB+ of memory. I have had FreeBSD > > current on RISC-V running fairly well with ZFS however that was a purely > > rv64imafdc architecture. > > > > In the FreeBSD 10 time frame I know people were running ZFS on arm7 boards. > Iirc, there was a long list of tweaks needed to size of the ZIL. A quick > google didn't find it. > > Otoh, I looked at ZFS for NanoBSD when it first came out. I gave up because > the 256MB boards at the time made any kind of storage traffic ran things > out of memory. > > Warner > > > I will watch this thread with curiosity. There have been several threads about using zfs on armv7 over the years. Some of them are from 2013 and indicate little sucess. Others, from 2015, indicate it works... https://lists.freebsd.org/pipermail/freebsd-arm/2015-March/010607.html https://lists.freebsd.org/pipermail/freebsd-arm/2015-March/010649.html There have also been some bug reports as recently as 2017 indicating that people are still doing this on small armv7 systems. -- Ian