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 9237AC43334 for ; Tue, 28 Jun 2022 19:15:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234483AbiF1TPv (ORCPT ); Tue, 28 Jun 2022 15:15:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51652 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235342AbiF1TPc (ORCPT ); Tue, 28 Jun 2022 15:15:32 -0400 Received: from mout.kundenserver.de (mout.kundenserver.de [212.227.126.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DF00193 for ; Tue, 28 Jun 2022 12:15:27 -0700 (PDT) Received: from localhost ([78.43.200.244]) by mrelayeu.kundenserver.de (mreue011 [212.227.15.167]) with ESMTPSA (Nemesis) id 1M8Qme-1o1qpx440W-004W7g for ; Tue, 28 Jun 2022 21:15:26 +0200 Date: Tue, 28 Jun 2022 21:15:24 +0200 From: linux@moellendorf.eu To: LKML Subject: Is it possible to backup and restore a configfs subsystem in userspace? Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline User-Agent: Mutt/2.2.3 (2022-04-12) X-Provags-ID: V03:K1:AjtnOIaJPC+HiCEksbdtZ2PnwOcrh5JYIG9OVzgPss64xKV9c/h dz9UXgO0Q/HbqMymRrZ6D9LaYqLs5CY+2bj9dR8JtYaayfhvhrm4CYKXazlKqF0t0TtV9y6 qg21F6Ceoy8GBHdwM1AuXBmlZPfx8qt9hQz5RBXi1bv+FOFZ9i31b4QID9j+bhCJC1Nd9w9 N3R7W6+5fmaN7K5lBpD4A== X-UI-Out-Filterresults: notjunk:1;V03:K0:rPnTzTNCVos=:YKtRNMB/eOlF8PKnpR//eh uFm2m0aVdPscD0zyniiZ7nU/xUsy6EMFFP+/VyX6vQnDOJ7LjrdKphh6uLKnKFRPYsujRkPNj gwqA07YVpp0n/xJ6nPG4xw/gStnp/o0k1GG7uKSjNRXXpQvQRAAR7qwarJFDBQrd97CBocGmW AG94zh83SGd7+D58VI4AD9rT0qJBiVKRLA4Z741THJVie6p16DVj177KPqt+cHVtp6HldPnNY qLbX9xTa9Kkdz1jQR1zPiU2CCS+Vej9WJ/+xuWSyin+VO6DYmhcAL1NC9+E1AYgcMG6OIbY7O hvXFOo2NvZzkE5iH7YQLEeYX24pAibMKJ/dEO6TSSFROCWltsBicJKSLw91xOu5YyvSzp9ENd HyIdmtFRmF0EFgrdvrRsBp9+/J9zS7RXRv0/1cQ1bz32conemSFFB4LmN3SF/AbYGiO9HjsGe p+pGct8139EXBgsvdLegCL2FOC2QpybvUeVDxkMS8EFwu4GMlcovfmLeM5GRcMIljCxvpSY9c ZrtBpOSeHSdFNBFPbMLwiMX8PxGXh1JRfoDNQUixmDEaJK656eZ06+8rYaC2sPDSEZQdJcyz1 1Ytdj8IopEQ7EHL2Hkn45Agp4HnFMJ85zHmqGbGZBTNDkTbb8M+PBB0DCEZnuCddDZPE4PYW8 udi+FwDAvkWcZmLfD2yiH1rJb3njvl7npwyi8IpYkA9cvo0UGSe1UQPmUnAibIrIAS2SkeDuz UvlsCjeWE7eO3xfz/SWj8Myvayc+voaYSNW4LZfx4hmwz14SMrIJCVCdl9I= Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi! If I create a configfs subsystem with some items and attributes in there, is it possible to backup and restore them in user space? My first experiments say no: - rsync: read errors mapping "/sys/kernel/config/my/item": No data available - tar: short read - cp: skipping file '/sys/kernel/config/my/item', as it was replaced while being copied But maybe I miss something here? Cheers! Lars