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[2620:137:e000::1:20]) by mx.google.com with ESMTP id o25-20020a637319000000b00542d3f19752si7336576pgc.725.2023.06.07.07.00.07; Wed, 07 Jun 2023 07:00:27 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=fail header.i=@mit.edu header.s=outgoing header.b=SlZp15sT; spf=pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=mit.edu Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240212AbjFGNja (ORCPT + 99 others); Wed, 7 Jun 2023 09:39:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57798 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238619AbjFGNj3 (ORCPT ); Wed, 7 Jun 2023 09:39:29 -0400 Received: from outgoing.mit.edu (outgoing-auth-1.mit.edu [18.9.28.11]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 73CE019BC for ; Wed, 7 Jun 2023 06:39:23 -0700 (PDT) Received: from cwcc.thunk.org (pool-173-48-119-27.bstnma.fios.verizon.net [173.48.119.27]) (authenticated bits=0) (User authenticated as tytso@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id 357Dd99L023640 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 7 Jun 2023 09:39:10 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mit.edu; s=outgoing; t=1686145151; bh=mOlaIipWXbX0KCSSQsOCrVq9cmkvIs44WVR++qJ9SwY=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=SlZp15sTVbk5GUgEvnDv/tTsG/zXzhnMd96i0pnTn2mum6Glf+4EH3yL3UxNpPano CMH3Hgdhisy4ROAat4Y+duJeRsMoXbbWyc2Rxczr6ncIhIs/vObqlF8mXRlqbYP0VB khFTuwh2hU4VoQ5qe8CH3/hcy6/cv0NTOy05zgKC52ijQ/yqNLBpRuuApLRWX82alk TXMmrwpZYxOS56bXap1zeK+ilXFbXhlT8KbRPxGYe+6fDB8P5YMPhfGTIPN0AXf5Wv CcChQ3gqXTs+in6uA5/SWG1eUBqRCqTL0BCCbGgHh3Qq5FBNLvGQcJESXGl95zx3pu CY01DbMHrj1Qg== Received: by cwcc.thunk.org (Postfix, from userid 15806) id B5FE615C04C3; Wed, 7 Jun 2023 09:39:09 -0400 (EDT) Date: Wed, 7 Jun 2023 09:39:09 -0400 From: "Theodore Ts'o" To: Krister Johansen Cc: linux-ext4@vger.kernel.org Subject: Re: [e2fsprogs PATCH] resize2fs: use directio when reading superblock Message-ID: <20230607133909.GA1309044@mit.edu> References: <20230605225221.GA5737@templeofstupid.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230605225221.GA5737@templeofstupid.com> X-Spam-Status: No, score=-4.0 required=5.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org On Mon, Jun 05, 2023 at 03:52:21PM -0700, Krister Johansen wrote: > Invocations of resize2fs intermittently report failure due to superblock > checksum mismatches in this author's environment. This might happen a few > times a week. The following script can make this happen within minutes. > (It assumes /dev/nvme1n1 is available and not in use by anything else). What version of e2fsprogs are you using, and what is your environment? Are you perhaps trying to change the UUID of the file system (for example, in a cloud image environment) in parallel with resizing the file system to fit the size of the block device? - Ted