From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mxex2.tik.uni-stuttgart.de (mxex2.tik.uni-stuttgart.de [129.69.192.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1126C1E260A for ; Sun, 27 Jul 2025 17:56:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=129.69.192.21 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753638988; cv=none; b=ZyNNOA4rfUisDGKO2c3m/tsmPxZOEyA5BmZET/mVGGrURQX2UrtVmi7R6bMk/pawR/uFtBdoILXy9c5geKG1ItlfDvf9ojhT6fCCfUEFFRcJljwXObcPuKdHitz943EBCeCK3eT8odHDOBT1KjXM6pBd58k+3E+AyGjs25oZOL8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753638988; c=relaxed/simple; bh=ZbM0a2MDbngldYq1ovj44uxR0CCjjR9q+mfPgIQ9R7w=; h=Date:From:To:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=kT2Tn4BXhemGeP3izkklA2wkgu5f5Kg8k5l+5aF4zG56vwi+13AVLj954n10dalcTx+/b83BbVkV2InRj3x9DbSg6QJ7QZeJx5o28jC9gHnPErS1RLV/mOBVSjr7pU3s1qDbdzjj5NKbqVWXvhIIj0L9MqZt8BjEye1neLD7l0o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rus.uni-stuttgart.de; spf=pass smtp.mailfrom=rus.uni-stuttgart.de; dkim=pass (2048-bit key) header.d=uni-stuttgart.de header.i=@rus.uni-stuttgart.de header.b=gPPln7S8; arc=none smtp.client-ip=129.69.192.21 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rus.uni-stuttgart.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rus.uni-stuttgart.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=uni-stuttgart.de header.i=@rus.uni-stuttgart.de header.b="gPPln7S8" Received: from localhost (localhost [127.0.0.1]) by mxex2.tik.uni-stuttgart.de (Postfix) with ESMTP id 3420460A29 for ; Sun, 27 Jul 2025 19:46:20 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=uni-stuttgart.de; h=x-mailer:user-agent:content-disposition:content-type :content-type:mime-version:message-id:subject:subject:from:from :date:date; s=dkim; i=@rus.uni-stuttgart.de; t=1753638378; x= 1755377179; bh=ZbM0a2MDbngldYq1ovj44uxR0CCjjR9q+mfPgIQ9R7w=; b=g PPln7S82aUDce+4+kIFx9O1g1pxvaIePWxnXqwu8mxSyV1ssMhP5cEo1Or0muIi+ GZBHmqd5+AmNdc7mMRU1QI/4dp4UaAtN0y80XGdUiVZ2qDdQhJbPtumCqXsVAja+ TQGGQwuXEfzVERSqlfTvTb2jOtLkuJOSXYaAUZIucBxw5rFyL1GYc/8uOhKyBjyA Wyve2sxhhTU5nFYyjEfDJhfsHF/UXapGG0Fdwz6Lj2sqhIjcKji5O/pd6syH6XN3 G8zocvOFFGv0RUDtBU+zJ/BqJZes9WUvg9YawduFUkxZrP4mtUeznXYlJLdZBlSk BD/KYnW/hdl78+DJVosCQ== X-Virus-Scanned: USTUTT mailrelay AV services at mxex2.tik.uni-stuttgart.de Received: from mxex2.tik.uni-stuttgart.de ([127.0.0.1]) by localhost (mxex2.tik.uni-stuttgart.de [127.0.0.1]) (amavis, port 10031) with ESMTP id r6J_CfuIQe5T for ; Sun, 27 Jul 2025 19:46:18 +0200 (CEST) Received: from authenticated client (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mxex2.tik.uni-stuttgart.de (Postfix) with ESMTPSA Date: Sun, 27 Jul 2025 19:46:18 +0200 From: Ulli Horlacher To: linux-btrfs@vger.kernel.org Subject: cannot read default subvolume id? Message-ID: <20250727174618.GD842273@tik.uni-stuttgart.de> Mail-Followup-To: linux-btrfs@vger.kernel.org Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) X-Mailer: smtpsend-20240729 Why is there a "cannot read default subvolume id"? tux@quak:~: btrfs sub create xx Create subvolume './xx' tux@quak:~: btrfs sub del xx WARNING: cannot read default subvolume id: Operation not permitted Delete subvolume 292 (no-commit): '/home/tux/xx' tux@quak:~: df -H . Filesystem Size Used Avail Use% Mounted on /dev/mapper/nvme0n1p5_crypt 2,0T 64G 1,9T 4% /home tux@quak:~: mount | grep /home /dev/mapper/nvme0n1p5_crypt on /home type btrfs (rw,relatime,ssd,discard=async,space_cache=v2,user_subvol_rm_allowed,subvolid=257,subvol=/@home) tux@quak:~: btrfs version btrfs-progs v6.6.3 tux@quak:~: uname -a Linux quak 6.14.0-24-generic #24~24.04.3-Ubuntu SMP PREEMPT_DYNAMIC Mon Jul 7 16:39:17 UTC 2 x86_64 x86_64 x86_64 GNU/Linux -- Ullrich Horlacher Server und Virtualisierung Rechenzentrum TIK Universitaet Stuttgart E-Mail: horlacher@tik.uni-stuttgart.de Allmandring 30a Tel: ++49-711-68565868 70569 Stuttgart (Germany) WWW: https://www.tik.uni-stuttgart.de/ REF:<20250727174618.GD842273@tik.uni-stuttgart.de>