From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4105FC00140 for ; Mon, 15 Aug 2022 10:34:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232255AbiHOKe5 (ORCPT ); Mon, 15 Aug 2022 06:34:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51296 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229752AbiHOKe4 (ORCPT ); Mon, 15 Aug 2022 06:34:56 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D8EB8220C2; Mon, 15 Aug 2022 03:34:54 -0700 (PDT) Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id 73299205F4; Mon, 15 Aug 2022 10:34:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1660559693; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=z2sTzG5HaRXhQPCslS7WPQTvEXy810GcFy0EHN4D2FY=; b=d0xbmtfNVw/MvU6+bQ3HQFC6/eOHRDO0hk4mCewBYF9H9WilB3gGIjKtwIximGd7jVPQro ofHMtKm0OtiR7Obj8jNFPW54ZopHDms1RvvbUO9RYBHHyjfXzdOCoeBW/hbXzS7+SQo+eK IXjL56rrq0EBj/k0huFg9CIwDYgw4pA= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1660559693; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=z2sTzG5HaRXhQPCslS7WPQTvEXy810GcFy0EHN4D2FY=; b=PRoCPRbbFARRhIfXYY0cnN+6b0riR9XPa8+Rj0ktoW+Vi7CLFq9IemVqNNxE3XiuXed0wA L6luQ6WWpGIqgrAA== Received: from quack3.suse.cz (unknown [10.100.224.230]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by relay2.suse.de (Postfix) with ESMTPS id 4EDF82C1B9; Mon, 15 Aug 2022 10:34:53 +0000 (UTC) Received: by quack3.suse.cz (Postfix, from userid 1000) id C0284A066A; Mon, 15 Aug 2022 12:34:52 +0200 (CEST) Date: Mon, 15 Aug 2022 12:34:52 +0200 From: Jan Kara To: Stefan Wahren Cc: Jan Kara , linux-ext4@vger.kernel.org, Ojaswin Mujoo , Harshad Shirwadkar , Theodore Ts'o , Ritesh Harjani , linux-fsdevel@vger.kernel.org, Linux Kernel Mailing List , Geetika.Moolchandani1@ibm.com, regressions@lists.linux.dev Subject: Re: [Regression] ext4: changes to mb_optimize_scan cause issues on Raspberry Pi Message-ID: <20220815103452.7hjx7ohzx64e5lex@quack3> References: <0d81a7c2-46b7-6010-62a4-3e6cfc1628d6@i2se.com> <20220728100055.efbvaudwp3ofolpi@quack3> <76a9b920-0937-7bef-db55-844f0f5f6c1b@i2se.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <76a9b920-0937-7bef-db55-844f0f5f6c1b@i2se.com> Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org Hi Stefan, Back from vacation... On Sun 31-07-22 22:42:56, Stefan Wahren wrote: > Hi Jan, > > Am 28.07.22 um 12:00 schrieb Jan Kara: > > > > Also can get filesystem metadata image of your card like: > > e2image -r - | gzip >/tmp/ext4-image.gz > > > > and put it somewhere for download? The image will contain only fs metadata, > > not data so it should be relatively small and we won't have access to your > > secrets ;). With the image we'd be able to see how the free space looks > > like and whether it perhaps does not trigger some pathological behavior. > i've problems with this. If i try store uncompressed the metadata of the > second SD card partition (/dev/sdb2 = rootfs) the generated image file is > nearly big as the whole partition. In compressed state it's 25 MB. Is this > expected? Yes, that is expected. The resulting file is a sparse file that contains only metadata blocks that is the reason why it compresses so well but looks big. Honza -- Jan Kara SUSE Labs, CR