From owner-freebsd-fs@FreeBSD.ORG Tue Jan 7 16:34:07 2014 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 5CE2C80A for ; Tue, 7 Jan 2014 16:34:07 +0000 (UTC) Received: from zxy.spb.ru (zxy.spb.ru [195.70.199.98]) by mx1.freebsd.org (Postfix) with ESMTP id 1AD3817C0 for ; Tue, 7 Jan 2014 16:34:06 +0000 (UTC) Received: from slw by zxy.spb.ru with local (Exim 4.69 (FreeBSD)) (envelope-from ) id 1W0ZbS-000Bz3-6h for freebsd-fs@freebsd.org; Tue, 07 Jan 2014 20:34:06 +0400 Date: Tue, 7 Jan 2014 20:34:06 +0400 From: Slawa Olhovchenkov To: freebsd-fs@freebsd.org Subject: ZFS 1MB recordsize Message-ID: <20140107163406.GM16734@zxy.spb.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: slw@zxy.spb.ru X-SA-Exim-Scanned: No (on zxy.spb.ru); SAEximRunCond expanded to false X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 07 Jan 2014 16:34:07 -0000 What is trouble to support 1 MB blocksize in ZFS? I try to change in /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/spa.h #define SPA_MAXBLOCKSHIFT 17 to #define SPA_MAXBLOCKSHIFT 20 rebuild kernel and world, install it and reboot. create new dataset, copy 16MB file and: # zdb -dddddddd zroot/tst 8 Dataset zroot/tst [ZPL], ID 177, cr_txg 31368, 16.1M, 8 objects, rootbp DVA[0]=<0:d1397000:1000> DVA[1]=<0:412000:1000> [L0 DMU objset] fletcher4 uncompressed LE contiguous unique double size=800L/800P birth=31384L/31384P fill=8 cksum=bf78ba9b9:e709a16b792:ae320b3c0832c:6061cd37e67e787 Object lvl iblk dblk dsize lsize %full type 8 2 16K 1M 16.0M 16M 100.00 ZFS plain file (K=inherit) (Z=inherit) 168 bonus System attributes dnode flags: USED_BYTES USERUSED_ACCOUNTED dnode maxblkid: 15 path /if_ath.ko.debug uid 0 gid 0 atime Tue Jan 7 19:23:36 2014 mtime Tue Jan 7 19:23:37 2014 ctime Tue Jan 7 19:23:37 2014 crtime Tue Jan 7 19:23:36 2014 gen 31383 mode 100644 size 15806584 parent 4 links 1 pflags 40800000004 Indirect blocks: 0 L1 0:d138c000:1000 0:407000:1000 4000L/1000P F=16 B=31384/31384 0 L0 0:d0373000:100000 100000L/100000P F=1 B=31383/31383 100000 L0 0:d0473000:100000 100000L/100000P F=1 B=31383/31383 200000 L0 0:d0573000:100000 100000L/100000P F=1 B=31383/31383 300000 L0 0:d0673000:100000 100000L/100000P F=1 B=31383/31383 400000 L0 0:d0773000:100000 100000L/100000P F=1 B=31383/31383 500000 L0 0:d0873000:100000 100000L/100000P F=1 B=31383/31383 600000 L0 0:d0973000:100000 100000L/100000P F=1 B=31383/31383 700000 L0 0:d0a73000:100000 100000L/100000P F=1 B=31383/31383 800000 L0 0:d0b8c000:100000 100000L/100000P F=1 B=31384/31384 900000 L0 0:d0c8c000:100000 100000L/100000P F=1 B=31384/31384 a00000 L0 0:d0d8c000:100000 100000L/100000P F=1 B=31384/31384 b00000 L0 0:d0e8c000:100000 100000L/100000P F=1 B=31384/31384 c00000 L0 0:d0f8c000:100000 100000L/100000P F=1 B=31384/31384 d00000 L0 0:d108c000:100000 100000L/100000P F=1 B=31384/31384 e00000 L0 0:d118c000:100000 100000L/100000P F=1 B=31384/31384 f00000 L0 0:d128c000:100000 100000L/100000P F=1 B=31384/31384 segment [0000000000000000, 0000000001000000) size 16M What is absent?