From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mout.web.de (mout.web.de [212.227.17.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DAF8A23F260; Wed, 15 Jan 2025 08:34:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=212.227.17.11 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736930051; cv=none; b=WRJ2nC0nbRM2u7XmwOZYWzgZFNqIl6TH7Zkshv8CMDza5Jda2RwfjraFvyXGtv8YuLLjiZHcU9wC1lCIzXYkPalJufcSyvzSnkk7R/QdM0Kmstchy/falN870l5zzmWtcBA1+yFaZzsXgcIv7t7uVogWmNL2+kbtmRrENzdMfKY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736930051; c=relaxed/simple; bh=0N57P/AnAVgaStKmf9dVTwcijC90xG1fVYLiY7dzxko=; h=Message-ID:Subject:From:To:Cc:Date:Content-Type:MIME-Version; b=MNONMPvOmjh+ozA7OmYK2KLOcA6EAe2Ay2gAW/hsKfFt3qpcntvbCzOd4WcEqDKCA1vxxnYhsdDqo/XiLhBTBteB863qAwmGivDmU6YIwmf/qNUvWamhroHNJVXPBqxPdGd17+aymdKWqcQYL8YqshAAoSRPmj1JTfW5gycAnAw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=web.de; spf=pass smtp.mailfrom=web.de; dkim=pass (2048-bit key) header.d=web.de header.i=thewand@web.de header.b=B3Ge2QpI; arc=none smtp.client-ip=212.227.17.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=web.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=web.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=web.de header.i=thewand@web.de header.b="B3Ge2QpI" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=web.de; s=s29768273; t=1736930046; x=1737534846; i=thewand@web.de; bh=0N57P/AnAVgaStKmf9dVTwcijC90xG1fVYLiY7dzxko=; h=X-UI-Sender-Class:Message-ID:Subject:From:To:Cc:Date: Content-Type:Content-Transfer-Encoding:MIME-Version:cc: content-transfer-encoding:content-type:date:from:message-id: mime-version:reply-to:subject:to; b=B3Ge2QpInACX83ND5wIRRzSu62OJjLRW4+SMeToogIatjzCSHTXcF0Qt0cdZ9ja5 kUzngWCP3ciAve/2Ugn5FQrN5Bccqn8txd+gosQalSmSqSSUiS9oEsaW/twB0RGJQ /DttYGnxdLAqkw9+C8zHrg13ayE+NyS2y5369ukvuUF5Q0/4SaO0jVt5Iz4vY4diC wy5zA66wwoH7wzcf1WKqEf71muxWWyb4omoCh30UG+n71H2Covp8xUWERskPl/V8s 5MNdHsJbYUZ5Rmce16a+AH6mLUQJT1ri2JQpU8KCSV5n7OfKYIdi75CyePdPQlaUc /5zG+X0jiUmZN8KMOg== X-UI-Sender-Class: 814a7b36-bfc1-4dae-8640-3722d8ec6cd6 Received: from [192.168.2.142] ([87.189.178.119]) by smtp.web.de (mrweb105 [213.165.67.124]) with ESMTPSA (Nemesis) id 1MzTLO-1tKpe23ANk-00wJMa; Wed, 15 Jan 2025 09:34:06 +0100 Message-ID: Subject: Two questions on sparse files From: Andreas Wagner To: linux-ext4@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org Date: Wed, 15 Jan 2025 09:34:06 +0100 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.54.2 Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Provags-ID: V03:K1:q+LUffMs+1GtHhPyY84cm0t2OVnw7rGVZkmQaTObODZP4uyWtA4 IZP3X6BRpL26DgNcPUpRqvKdlPKxmuzmOqovw99baMNHsuUsIQsfYQjgEJhGpW1Un9P+AnW +5CrBADpuCaDXL7iCZNlLBavEK68YFHYdB2XLBKR+KAriOPQbjo7h5MJQSjN5F+sE7B6OP/ 8cyATG4CS0gtjtXWq3lsA== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:jnR4H8ctUAI=;z7ZLXxiSijc3+Ou1kqoI7QvYNa8 RLEvx3rXSnaO8/UeiSVdsN7wOjYUwPYfcLzot07ItPzrlGZRFBWpEdQAAVsz6A1GTrEhuLDIY pCe7Q1El4drWEJXG11COGAJADrZFWfW8+DRAgkeKzo8in8acBe0tXIZOAcRliJlFbIsHtIbIW PdAUS8lD0mg31a9JUoeDCZ6/35aq7kmj/u3nIIvil3jb8JWNuG5gDTELXOyHjpF4ZM4MRr0ud StU1o/yoaJh1/9fR9EeGDi+eL3q9+gjXXNF1xDF+XvSGYd0HGbaFZsLGDkWFgedmabBfcgGxi peo5xapDt19Fb31nO8eviFo0B3CvRbgGUgSpc79LMn5R8FXc/i12/os56VwpAkzT8JUktQvot ZaVh9lzNQ0WrRZl9YCpHmkkyNig7Oh34TusiIeObibI3gAne+Nk5hSQOmaProX9BaW+CiH/SH 4NlBp0jUprvxp/fDeK3jcOd8rjX+FfoubtwLDzU6E4DZMsTux1dvcV7ZNakhS0VS3ySxWxMZN DHL3PHiiNnD2gubKRjvfHaIG1JnxV1PNibs30fWTMtRv7gMIsHnPVyCNEaCX89q0PM8KUxUcQ fLhHw0APQMCC2aX9jQ7d3TmdAo/ey7EAA1ClsIvBlEXzpcWjwBMGmer+3VKwPSII+eSEtBbAv MJoDg8AHry8+1LuKKbWp7JTuzxRc67FfdolAdseOd+PXiE8ChRDCtYQsz/nBJSTtmRJD+Io5U BF5iYzntqXuyEfT7zPWrD7ikLcFCXhFWPXttHT97F7JHuHDgmnNa9n1Irak12cyMVVXHMsy5B u1oDzt9D+30On+Y5AuHeC3tb0GQaqv5O2Rmyao9ZScI2uY/wW1Y5S/nm23CReRvCWVxR47Vzo gRG2k7n74dg6AqLMUu3IaniiYb9p4OJvcMKXwso1Wuh/+bIZud1Ka6K2ZAEtskZsbhDqqCM6Z V0vE2/DrA7dRTNYh5xSv3n03eFH5/IUiL69vHSRn0YOxCCk0aR7DEy3YTKQ29OO2yuEE2YSP7 AwV+Fb19suz9LX/J9rpXDJejx9ZZbxG5jfkzX0U6bf0VOs0IK3BaS7dkoxc2qpSo0vPD6tQ36 VWhqNZ+HiLzp1k66IFKuK0wBAdbasBtO/izCFXuL/ECQgwtZSQlRonZZoAYbkEoIF65plNoaA zD2cDceUo+NRbsrti0e+8GYBkMBdA3cFHgS5M/PPcLQ== Hello, I have two questions on sparse files: 1. Do they really - as media and Wikipedia suggest - reduce allocated filesize if the file is sparse?=20 2. Are the blocks of the file in random order? Thanks in advance and regards, Andreas Wagner