From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmx.com header.i=quwenruo.btrfs@gmx.com header.b="ZpCnifev" Received: from mout.gmx.net (mout.gmx.net [212.227.17.22]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 93C07CD for ; Mon, 11 Dec 2023 15:21:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.com; s=s31663417; t=1702336863; x=1702941663; i=quwenruo.btrfs@gmx.com; bh=z/nfvxaG7RGQXn5KM5tDg31TrEf6ryNRQxcVzPHS6N0=; h=X-UI-Sender-Class:Date:Subject:To:References:From:In-Reply-To; b=ZpCnifevfza7Dv+RZbLq+LxZCuDbw/gDtnZl2K/n9gqAtefX+5oq3gZTbz37yggp BnnkmDCrogDErgt9P3WA7KBQRBKDWkrXbf8rc0kAOr67Y7Fj7uziLr07ZrWFyiY9a Kbjunney8cXLlZ33kfUMEwD0Q9CunDlwSSH0lmz8uyeb0ZUEEcmIxr/nGq08FULi/ 8f7cMKivl4Ze8C/Znr8vLyfluyRTOKu4Ko8k3O6BXtXdZ0EmuuC9HSvaNOduZIhuR TN0y8t5lh+XNMd5KNVTWinIMzrrcQcoA6rbjlvCKQspD1f9aJaBZsuRmYCvD+bSdo wC8AoHk1BZdbYUBjZw== X-UI-Sender-Class: 724b4f7f-cbec-4199-ad4e-598c01a50d3a Received: from [172.16.0.153] ([193.115.79.20]) by mail.gmx.net (mrgmx104 [212.227.17.174]) with ESMTPSA (Nemesis) id 1MhlGq-1rhTV02iC8-00dlEb; Tue, 12 Dec 2023 00:21:03 +0100 Message-ID: <656b69f7-d897-4e9d-babe-39727b8e3433@gmx.com> Date: Tue, 12 Dec 2023 09:50:58 +1030 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: btrfs thinks fs is full, though 11GB should be still free Content-Language: en-US To: Christoph Anton Mitterer , linux-btrfs@vger.kernel.org References: <0f4a5a08fe9c4a6fe1bfcb0785691a7532abb958.camel@scientia.org> <253c6b4e-2b33-4892-8d6f-c0f783732cb6@gmx.com> <95692519c19990e9993d5a93985aab854289632a.camel@scientia.org> From: Qu Wenruo Autocrypt: addr=quwenruo.btrfs@gmx.com; keydata= xsBNBFnVga8BCACyhFP3ExcTIuB73jDIBA/vSoYcTyysFQzPvez64TUSCv1SgXEByR7fju3o 8RfaWuHCnkkea5luuTZMqfgTXrun2dqNVYDNOV6RIVrc4YuG20yhC1epnV55fJCThqij0MRL 1NxPKXIlEdHvN0Kov3CtWA+R1iNN0RCeVun7rmOrrjBK573aWC5sgP7YsBOLK79H3tmUtz6b 9Imuj0ZyEsa76Xg9PX9Hn2myKj1hfWGS+5og9Va4hrwQC8ipjXik6NKR5GDV+hOZkktU81G5 gkQtGB9jOAYRs86QG/b7PtIlbd3+pppT0gaS+wvwMs8cuNG+Pu6KO1oC4jgdseFLu7NpABEB AAHNIlF1IFdlbnJ1byA8cXV3ZW5ydW8uYnRyZnNAZ214LmNvbT7CwJQEEwEIAD4CGwMFCwkI BwIGFQgJCgsCBBYCAwECHgECF4AWIQQt33LlpaVbqJ2qQuHCPZHzoSX+qAUCY00iVQUJDToH pgAKCRDCPZHzoSX+qNKACACkjDLzCvcFuDlgqCiS4ajHAo6twGra3uGgY2klo3S4JespWifr BLPPak74oOShqNZ8yWzB1Bkz1u93Ifx3c3H0r2vLWrImoP5eQdymVqMWmDAq+sV1Koyt8gXQ XPD2jQCrfR9nUuV1F3Z4Lgo+6I5LjuXBVEayFdz/VYK63+YLEAlSowCF72Lkz06TmaI0XMyj jgRNGM2MRgfxbprCcsgUypaDfmhY2nrhIzPUICURfp9t/65+/PLlV4nYs+DtSwPyNjkPX72+ LdyIdY+BqS8cZbPG5spCyJIlZonADojLDYQq4QnufARU51zyVjzTXMg5gAttDZwTH+8LbNI4 mm2YzsBNBFnVga8BCACqU+th4Esy/c8BnvliFAjAfpzhI1wH76FD1MJPmAhA3DnX5JDORcga CbPEwhLj1xlwTgpeT+QfDmGJ5B5BlrrQFZVE1fChEjiJvyiSAO4yQPkrPVYTI7Xj34FnscPj /IrRUUka68MlHxPtFnAHr25VIuOS41lmYKYNwPNLRz9Ik6DmeTG3WJO2BQRNvXA0pXrJH1fN GSsRb+pKEKHKtL1803x71zQxCwLh+zLP1iXHVM5j8gX9zqupigQR/Cel2XPS44zWcDW8r7B0 q1eW4Jrv0x19p4P923voqn+joIAostyNTUjCeSrUdKth9jcdlam9X2DziA/DHDFfS5eq4fEv ABEBAAHCwHwEGAEIACYCGwwWIQQt33LlpaVbqJ2qQuHCPZHzoSX+qAUCY00ibgUJDToHvwAK CRDCPZHzoSX+qK6vB/9yyZlsS+ijtsvwYDjGA2WhVhN07Xa5SBBvGCAycyGGzSMkOJcOtUUf tD+ADyrLbLuVSfRN1ke738UojphwkSFj4t9scG5A+U8GgOZtrlYOsY2+cG3R5vjoXUgXMP37 INfWh0KbJodf0G48xouesn08cbfUdlphSMXujCA8y5TcNyRuNv2q5Nizl8sKhUZzh4BascoK DChBuznBsucCTAGrwPgG4/ul6HnWE8DipMKvkV9ob1xJS2W4WJRPp6QdVrBWJ9cCdtpR6GbL iQi22uZXoSPv/0oUrGU+U5X4IvdnvT+8viPzszL5wXswJZfqfy8tmHM85yjObVdIG6AlnrrD In-Reply-To: <95692519c19990e9993d5a93985aab854289632a.camel@scientia.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:YN4v4unVatUG0d2nLZJo+d4DGYWzAw9jhKZbujTJVZQWdY09Lks pXy8TDvPFsvmrhxwlGbQ+ZuAuJzBl2zYUNMUC9yZIu9rVWFreVHuURe7rx929D149X4kal7 g6USNs4xetgOZapUri7L08d2ZTVNzKGn6sdtpWNfN2fFOhjZIr9oxFp8CRstLGkn6MspwEI rwmaWBUOxvR9psT0gK9Iw== UI-OutboundReport: notjunk:1;M01:P0:KmBQxYZW+ys=;Nd+35EJl5b3RFlPaM5r2hyWZSpg fMFcOxKJLEpNmm7DOErHJPK0aP5gKEu1Mn1B36lWNgjSSPwku5tJlWdYwxinL+Aqr0yI732xk /If4ZgyB8D9fBSnU1kaStEsCKriAeB+31UpJ3TKnDcfUARn9U4+o+LYBdTPNXfr2wVPezzzc1 dXHmv8mgrZsg4iD0GY4a+hGgbewqgPHofQeWJk5atAN19DnxXs5Zkhnc9rjr7JgRXrhajrLk1 U9ogHDnhHeM8+8VreX6nuZB7yUnyfsm6Nc4FsLJI7S3gjSKotI/4vGwKAIYmLQG138iLzC1NG WGqItxLJvxQqPFoe6tbVqkOWcba7gFCxZeTDuOd89Yh7kWED3BvXKvkamI6tOD3YmNMPXqgc0 gS8gKEnESK3N8wuw/9wxYUviRplcExQwinR7i9C6+7j6dUP2XNZXHyosEXRc83Iz1f1Q5ahtK 4jd+473cwfApoln6GjA9h0UNsArBnGxHmKXAqJT6dmhuBHDh40h6BJMM+Z4jj1gcq7vLt4Igd +jShSinmKZ5yYR5voCyjKEwA1N6SFH5qyfierdkU/JmvRpRZp3xiWw+3CyLYhDuCyFG8qtTFv I/MHTo8z0sRKQpJto5EuEM+ulr/tpiLBYd06Iz4YCpb8B+PXwXuHy0sgKMChgm51MZ+PPsbQs U+8CAU0w3197DmWhizZh2ONfPgHPFLW+3rcY8ekvrYYWbhjsPrajIRjwRXFBuxYVK7CJLO23w 9IeNPGuKR/AJxnQfm4WaXBNGp+B983CbbbRyYNAZKDO4KZ2fbi8wMoHMVvKJLXvV3krNzBHWS Td0rUJ39b6EWKxs11jd9Xd1lHYM5MjsagKDBiSESnzGkj0w6matk9qwDpQUL9vaX72QU3lx+T 7yNIijoZjwz7Gre7k5Osdkl8OiWCJJp0DYWnpyx1lW+d1ou3kk/vM3vc+RpcGL5EAjQJ8PkZB PANGpcI6e8KbH3f+hdc6uR69kvU= On 2023/12/12 08:53, Christoph Anton Mitterer wrote: > Hey Qu > > On Tue, 2023-12-12 at 07:27 +1030, Qu Wenruo wrote: >> Is your current mounted subvolume the fs tree? Or already the data >> subvolume? > > Well actually both, I always have a "service" mountpoint of the root > volume as well, and just unmounted that to no confuse with "double" > mount entries. > > In reality it looks like: > # mount | grep vdb > /dev/vdb on /data/main type btrfs (rw,noatime,space_cache=3Dv2,subvolid= =3D257,subvol=3D/data) > /dev/vdb on /data/btrfs-top-level-subvolumes/data-main type btrfs (rw,no= atime,space_cache=3Dv2,subvolid=3D5,subvol=3D/) > > But all data (except for 2 empty dirs, where on other systems I would > place btrbk snapshots) is in the data subvolume: > > data/btrfs-top-level-subvolumes/data-main# ls -al > total 16 > drwxr-xr-x 1 root root 26 Feb 21 2023 . > drwxr-xr-x 1 root root 30 Nov 9 23:49 .. > drwxr-xr-x 1 root root 20 Feb 21 2023 data > drwx------ 1 root root 10 Feb 21 2023 snapshots > /data/btrfs-top-level-subvolumes/data-main# du --apparent-size --total -= s --si * > 29G data > 10 snapshots > 29G total > > >> If the latter case, there are some files you can not access from your >> current mount point. > > No it's not that (that would have been quite embarrassing ^^). > /data/btrfs-top-level-subvolumes/data-main# tree -a snapshots/ > snapshots/ > =E2=94=94=E2=94=80=E2=94=80 btrbk > > 2 directories, 0 files > > >> Thus it's recommended to use qgroup to show a correct full view of >> the >> used space by each subvolume. > > Uhm... qgroups? How would they help me here? Shows exactly which subvolumes uses how many bytes, including orphan ones which is pending for deletion. Thanks, Qu > > Cheers, > Chris. >