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 0B739C6FD1C for ; Fri, 24 Mar 2023 17:29:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230267AbjCXR3Y (ORCPT ); Fri, 24 Mar 2023 13:29:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51520 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229505AbjCXR3U (ORCPT ); Fri, 24 Mar 2023 13:29:20 -0400 X-Greylist: delayed 518 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Fri, 24 Mar 2023 10:29:19 PDT Received: from mta-p8.oit.umn.edu (mta-p8.oit.umn.edu [134.84.196.208]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 76CAFAF12 for ; Fri, 24 Mar 2023 10:29:19 -0700 (PDT) Received: from localhost (unknown [127.0.0.1]) by mta-p8.oit.umn.edu (Postfix) with ESMTP id 4PjprT0166z9vKMJ for ; Fri, 24 Mar 2023 17:20:41 +0000 (UTC) X-Virus-Scanned: amavisd-new at umn.edu Received: from mta-p8.oit.umn.edu ([127.0.0.1]) by localhost (mta-p8.oit.umn.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id du-K3TC-Rter for ; Fri, 24 Mar 2023 12:20:40 -0500 (CDT) Received: from mail-pf1-f198.google.com (mail-pf1-f198.google.com [209.85.210.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mta-p8.oit.umn.edu (Postfix) with ESMTPS id 4PjprS4zq8z9vKM5 for ; Fri, 24 Mar 2023 12:20:40 -0500 (CDT) DMARC-Filter: OpenDMARC Filter v1.3.2 mta-p8.oit.umn.edu 4PjprS4zq8z9vKM5 DKIM-Filter: OpenDKIM Filter v2.11.0 mta-p8.oit.umn.edu 4PjprS4zq8z9vKM5 Received: by mail-pf1-f198.google.com with SMTP id i15-20020aa78d8f000000b005edc307b103so1302679pfr.17 for ; Fri, 24 Mar 2023 10:20:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=d.umn.edu; s=google; t=1679678440; h=to:subject:message-id:date:from:mime-version:from:to:cc:subject :date:message-id:reply-to; bh=192i+/S1FWeHYp/CgxiRyxhZy81Legi2/JkyYfa+kjU=; b=M24tlBvl+j5jZZraONKQ55S9jz9KAYBmsgkMBAvypyvtir6ObdasQ4BMjAmcsocD9b ge+rCHB+iNNXkYZQb9Eb1b96OQvWp/+tqw0qLkO6hZEZWmpvj1chm90M3KqpXchb7FGh Ch9PreIxAbatn20FRZhvD6U2Mb93YKLL+oMNvlcX67jYfV/PDN0sJmD5bsq1fUYdU/wj N5HiMMcSe9Y0nMXjxWgpIaY0mO1gdwJkJB3zH//B7qu3qACCDGdkVb+8qcO1rQBVpaqk x4PSn7nIoBUHY2fpP2DcEXWmOZSbbCyYEfCwY2wMNOECBAxiNXOCCijUWCPt/lNREWF7 HIDg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1679678440; h=to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=192i+/S1FWeHYp/CgxiRyxhZy81Legi2/JkyYfa+kjU=; b=WoFsIUglyhgCYppoEdxhsOxzr11Erm7nRyCFEImpUSIG6cWi2gEebkBYmgSwfUunZ+ +d+mjoJfQoAReBufDrJdig/JD51DO7eRFw3FYDRe6v//GoGGFn/q5Wms71nOdI+/llLs 8ZcDlWfOmgIkAzHfiWnwYZrw0oFuxVSklLyEWB6TUU9s3VXjyCSYnubTBAmcZolenFHz XD0szlQwoIWcgcT77tXz/j2yx9yywuNGitutCC1V3MDLihSWvMPFObLh7SBR4u9bd6oW L7oVjT7IoA4KScdLsmlditCQR9msQmYcD085CVBSj1xCrN1BedqQteHzTspJcnPI4MnA Dipg== X-Gm-Message-State: AAQBX9cagMJKca+mfQDj+RKog6g1sbNQpRSDRF5Q9GSPCL1VqdtXYThu 5pKqDteVwAWwij4iLyhNgK43m+NGv5DiqT2hjhsAH4yThAC1Gfg5E+OLSCnZnp7piiiztrLDnnH 13Ed+8G2cVG5RwK+d8Ng2MgZ9wJBX9cbWu03E4GwPVXBbnKMhuYvKjg== X-Received: by 2002:a17:902:8bc4:b0:19f:1d62:4393 with SMTP id r4-20020a1709028bc400b0019f1d624393mr1040359plo.7.1679678440044; Fri, 24 Mar 2023 10:20:40 -0700 (PDT) X-Google-Smtp-Source: AKy350YElbUGPlm1smDLHB5oBKznsMWUiUXc2+YmEuwjda6+1XPLrhGzhYv2ZKhAwXl0J8EqG5xsrgMZG67aKj/lVpo= X-Received: by 2002:a17:902:8bc4:b0:19f:1d62:4393 with SMTP id r4-20020a1709028bc400b0019f1d624393mr1040357plo.7.1679678439735; Fri, 24 Mar 2023 10:20:39 -0700 (PDT) MIME-Version: 1.0 From: Matt Zagrabelny Date: Fri, 24 Mar 2023 12:20:28 -0500 Message-ID: Subject: help with mounting subvolumes To: Btrfs BTRFS Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Greetings, I do not use subvolumes (yet). I've searched the internet for some tutorials on mounting subvolumes, but the documentation seems lacking. So far, I've tried... # btrfs subvolume create /foo # mount -t btrfs -o subvol=foo,defaults,nodatacow /dev/disk/by-uuid/5f33a159-4475-44e5-a5f8-40a23e18983a /mntfoo mount: /mntfoo: mount(2) system call failed: No such file or directory. dmesg(1) may have more information after failed mount system call. However /mntfoo exists: # stat /mntfoo File: /mntfoo Size: 0 Blocks: 0 IO Block: 4096 directory Device: 0,28 Inode: 9719644 Links: 1 Access: (0755/drwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root) Access: 2023-03-23 17:10:27.323613246 -0500 Modify: 2023-03-23 17:10:27.323613246 -0500 Change: 2023-03-23 17:10:27.323613246 -0500 Birth: 2023-03-23 17:10:27.323613246 -0500 Also, dmesg does not have any additional info on the error. Is there canonical documentation about mounting subvolumes? What am I missing regarding subvolumes and mounting them? Thanks for the help! -m