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([2a00:1370:8180:5524:1cff:ae8:cb7b:eb2c]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-30f465d48adsm17891041fa.74.2025.04.14.10.04.07 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 14 Apr 2025 10:04:07 -0700 (PDT) Message-ID: <5e154a2d-819f-4efb-b29b-b57a63371a18@gmail.com> Date: Mon, 14 Apr 2025 20:04:06 +0300 Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: Odd snapshot subvolume To: "Brian J. Murrell" , linux-btrfs@vger.kernel.org References: Content-Language: en-US, ru-RU From: Andrei Borzenkov In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit 14.04.2025 17:34, Brian J. Murrell wrote: > On my Fedora system I have the following: > > $ sudo btrfs subvolume show / > fedora_root > Name: fedora_root > UUID: c08a988c-ddd5-164e-b01e-51ac26bf018b > Parent UUID: - > Received UUID: - > Creation time: 2021-08-10 18:30:03 -0400 > Subvolume ID: 258 > Generation: 5029586 > Gen at creation: 10 > Parent ID: 5 > Top level ID: 5 > Flags: - > Send transid: 0 > Send time: 2021-08-10 18:30:03 -0400 > Receive transid: 0 > Receive time: - > Snapshot(s): > fedora_root/previous-releases/f38_root > fedora_root/previous-releases/f39_root > fedora_root/previous-releases/f40_root.old > fedora_root/previous-releases/f41_root > previous-releases/f33_root > Quota group: n/a > > All of the fedora_root/previous_releases/* snapshot subvolumes make > sense to me. There are all accessible at: > > $ ls -l /previous-releases/ > total 0 > dr-xr-xr-x. 1 root root 378 May 31 2023 f38_root > drwxr-xr-x. 1 root root 194 May 31 2023 f38_var > dr-xr-xr-x. 1 root root 378 Nov 11 2023 f39_root > drwxr-xr-x. 1 root root 194 Apr 1 2024 f39_var > dr-xr-xr-x. 1 root root 362 Jun 15 2024 f40_root.old > drwxr-xr-x. 1 root root 194 May 15 2024 f40_var.old > dr-xr-xr-x. 1 root root 362 Jun 15 2024 f41_root > drwxr-xr-x. 1 root root 194 May 15 2024 f41_var > > But then there is that odd-duck snapshot "previous-releases/f33_root" > not under "fedora_root" and not showing under /previous-releases in the > filesystem's namespace. > > How can I access that "previous-releases/f33_root" snapshot or even > just remove it? > mount -o subvol=/ /dev/whatever /mnt ls /mnt/previous-releases