Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.0 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BAB8CC43381 for ; Wed, 20 Feb 2019 06:31:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 79B0A2146E for ; Wed, 20 Feb 2019 06:31:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=dilger-ca.20150623.gappssmtp.com header.i=@dilger-ca.20150623.gappssmtp.com header.b="mblc99Kr" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728691AbfBTGbO (ORCPT ); Wed, 20 Feb 2019 01:31:14 -0500 Received: from mail-it1-f194.google.com ([209.85.166.194]:52259 "EHLO mail-it1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725922AbfBTGbO (ORCPT ); Wed, 20 Feb 2019 01:31:14 -0500 Received: by mail-it1-f194.google.com with SMTP id r11so12786933itc.2 for ; Tue, 19 Feb 2019 22:31:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dilger-ca.20150623.gappssmtp.com; s=20150623; h=from:message-id:mime-version:subject:date:in-reply-to:cc:to :references; bh=c9kA5cEkLIpvfSBuk7L27nOpXkizH6k96zqPlukDGbM=; b=mblc99KrncwxonfydVutLCW6WDe/P/W3asE7UbbLqsax8DoIs+zGPE0Ctz79VswmBU yvZ1sWUZeg5kCRR2vSwfApBhLSWu90sVTdMpV4wscdqFG4BceyGIUVO2t4GqSUFuTf8d 9DvqK1oK+lJn0azgfXSrMIA4DgEu9lfAQxHST14A0upEjssbo4q7CT0lJnqWLSFT7t7j y/TLAfeYEgfyDj0+lS8HNaRNRPKlxSPyIZJZlx0VEXSs3f7WBcae/nFuX+gfULiZowe+ kHyPgFqvClq1dSs023hAvBhuicMUmTqjJtllWEcXz2RXZO1VtcP/l6peG6abF8r+p4Sd hHOg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:message-id:mime-version:subject:date :in-reply-to:cc:to:references; bh=c9kA5cEkLIpvfSBuk7L27nOpXkizH6k96zqPlukDGbM=; b=gJDNJyq3RTsyHTjP52uXZU0JPOZpxHlSTBSMjh95BcIiIRJNMkpMNbwHcKB0xR3iOo aX9cQ8oFoRjeAC+xv3TWDZtzC2lNLLLWuigunLwalhCL+f32+qe9SNtiExHTfXb3nZ9M YcKXNKoJbtAJ3Km+lFHrdhcDL3pCvemaiRdDRDFlq2wACGmQnSvNtVhmhRSHm2LihUfr n2zK0jtcQcnuEEo5T+dZHKMP7d2k2FWVGdJX3rK9X01A8eYNV9yYzWzDewjhiqIQG5nL lDZaZ+dfz/M8v97l+yqq2IM1pjqJ6ULKd+HlF2He/GvZ4uCW1t8V9pKG6Dl9IHEKX/+Y pB3A== X-Gm-Message-State: AHQUAuZXDZODMVxRKU6W3oMGMNwCvePbIrSkSaQpa9/czS+xQHRNVfyj 2s+jreNp6vLIBfgMnXkpAqYcEIJbW1g= X-Google-Smtp-Source: AHgI3IbPTdbq0dv9UHpEaeSkXhPXNSEzgHp8f84YlLjwq5omCtE0kxVpnUkA3qfhUU2bQ7tzFaLIjw== X-Received: by 2002:a5d:8404:: with SMTP id i4mr20315521ion.251.1550644273301; Tue, 19 Feb 2019 22:31:13 -0800 (PST) Received: from cabot.frontierlocal.net ([47.158.158.91]) by smtp.gmail.com with ESMTPSA id 2sm2327774itw.11.2019.02.19.22.31.11 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 19 Feb 2019 22:31:12 -0800 (PST) From: Andreas Dilger Message-Id: Content-Type: multipart/signed; boundary="Apple-Mail=_E83A9448-4863-415E-AF63-7FEB0CE41695"; protocol="application/pgp-signature"; micalg=pgp-sha256 Mime-Version: 1.0 (Mac OS X Mail 10.3 \(3273\)) Subject: Re: Create ext2 filesystem from a directory Date: Tue, 19 Feb 2019 22:31:24 -0800 In-Reply-To: <20190219080333.GA2912@redhat.com> Cc: linux-ext4@vger.kernel.org To: "Richard W.M. Jones" References: <20190219080333.GA2912@redhat.com> X-Mailer: Apple Mail (2.3273) Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org --Apple-Mail=_E83A9448-4863-415E-AF63-7FEB0CE41695 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii On Feb 19, 2019, at 12:03 AM, Richard W.M. Jones = wrote: >=20 >=20 > This might interest/disgust/shock/scare(?!) people on this list: >=20 > $ time ./nbdkit --filter=3Dpartition -U - linuxdisk . partition=3D1 = --run 'qemu-img convert $nbd /var/tmp/ext2fs.img' >=20 > real 0m1.314s > user 0m0.424s > sys 0m0.889s >=20 > $ ls -lh /var/tmp/ext2fs.img > -rw-r--r--. 1 rjones rjones 351M Feb 19 07:44 /var/tmp/ext2fs.img >=20 > Code here: >=20 > = https://github.com/rwmjones/nbdkit/commit/6e7908c828e60f082d84d866070fe840= 6e6f2b04 How does this compare to "mke2fs -d "? Cheers, Andreas --Apple-Mail=_E83A9448-4863-415E-AF63-7FEB0CE41695 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org iQIzBAEBCAAdFiEEDb73u6ZejP5ZMprvcqXauRfMH+AFAlxs9D0ACgkQcqXauRfM H+D93w/+Ljg9aB7rsgPiICq+rt+ctKk59xMgtjS1lAPZTivnANHF4POsuJtoInlZ pViTqmG+657BcWywD4aTofJZ5XWTjucJFdvBW3UCyeR/+RU5xlH65rT2iy0/66AO cy57/oERyqX/zIa67auExNCJ5+mBOwU0i2e4NbaKWhfb9capfV6rYPODmSsIL0Vh pQiLNUCgHdIHpbZY63WWRdZtA8blpcf16PCoIR1g5Hu//YSkUtizjKEZiLpYSTuN aZD1EVvkEV9pg4up7S+AssQSbSAjJMmWMKxsROETIdB4U9kSp5YBxqleaY/Yv86o MSLz2pjnSBY9ugtcRcQe0qXSkXF/U1qcMmhOiAdqEZ7WDxSNc0VQEv2yd/xPGDUy F3kb1zu9hlaVlYf6Cnb/sAUKXAtayTbJnFEtLdFxzpQp73dh1eFlnfMkvwPvme41 fMUOpgKM8P52h3V6b/5vAb/bGPbfiUlVdNRUPwcEyU/NKorQPJIvGAa3HRn0K7m/ r7I0L0gPxt3L59AtGw6O6ni1GFvyCA6INQNfHDqy7Hlfa6QCI1I7c6uzImz70I2r vHrnM7e2oICqPtjcDn/KiDeKLg6tz+sTM9ZJE7XJn6MjtDkqvuOEC6y3pu3FoNRf Ftf0s3wkLdrkUDEhhyIaEG+quvk8KIdOaTZiO0mdPl7JK/G17GY= =S+hf -----END PGP SIGNATURE----- --Apple-Mail=_E83A9448-4863-415E-AF63-7FEB0CE41695--