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 X-Spam-Level: X-Spam-Status: No, score=-4.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 1A37CC433B4 for ; Fri, 21 May 2021 04:20:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CFCA4611AD for ; Fri, 21 May 2021 04:20:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238633AbhEUEV5 (ORCPT ); Fri, 21 May 2021 00:21:57 -0400 Received: from sonic315-11.consmr.mail.gq1.yahoo.com ([98.137.65.35]:46126 "EHLO sonic315-11.consmr.mail.gq1.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233608AbhEUEV4 (ORCPT ); Fri, 21 May 2021 00:21:56 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=att.net; s=s1024; t=1621570834; bh=UsFcIdiZ00YWW3sRM88i5CI2M2OTT9bI6GlPzWf75gA=; h=Subject:To:References:From:Date:In-Reply-To:From:Subject:Reply-To; b=pTbsQFfWDRT0LBeUc8bwpXZJgk0sfjdUrClpFAwsK25NphK7knQA6xlKoLjyexQ3AiEHOIajWHN9t8bY/EhToIiXUj+murZA2UqENJEO9AFowo3Rv+p8C85IFCdhbWK9IyarKyHH/OdcwJj9nlGCQMWWOldMBbgXKA8sk2ro6vs= X-SONIC-DKIM-SIGN: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1621570834; bh=lmX5T9QmLY5hlPnOM3oywGPzyi2UVUAux/YrTfJlJ1L=; h=X-Sonic-MF:Subject:To:From:Date:From:Subject; b=jvkH34o5LGmPP7w7LlRSNxaEIQjB7IywVGMWQgJzv1EqxPXy0HN/ui4p5fX4nYchVczvDxbI8kkMN8BxYDg0QJNjAe+2U2v81A4qlgYTY4bhKur83Qn1s86s0vXHOW47Xptjp0h2SBmTsxsEr0hu3JqOGVUx03R72vuT7z4BpO2LYlpuHicEybflEzB6yvFSL22+yGHoqTXO2ZOO8HLtJe0lnzQrePVKxFrz/JL+1oXznf2bImwHhGG7HQWPp0NBzcvahyO2Vj9sv2BGEt2uYX/vpxyHKNbJKz16uiAaY5sF+h/5g0WwPjTjfJtGEmHHV5UdEYAVCpuesFsRCUlSAg== X-YMail-OSG: 1kUadk0VM1ky6B9FQw3.TgH1bqb3yehZqbIuiPUF4IUFbKTvug.ZUNWhLggb7M. 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Are you seriously implying there is no way any of them could >> possibly work? > > Of course not, but it's *likely* none will work. Well, it is not unlikely none will work. I would estimate the OP has a pretty fair chance it will work. > mdadm's default chunk > size has probably changed since the array was created if it's more than > a few years old, for starters. Which is precisely why I specified the chunk size (-c 512) reported by his Examine on the command line. This eliminates any ambiguity. Since the build in Debian Buster is also using a default chunk size of 512K, it is unlikely the default has changed since he created the array. Older versions used 64K. Specifying the chunk size on the command line makes the issue moot.