From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mout.gmx.net (mout.gmx.net [212.227.15.18]) (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 075001339A2 for ; Sun, 5 May 2024 22:26:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=212.227.15.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714947999; cv=none; b=oDC5I6AiC0r9FkEIJhXR/cfVDM6eFYE43SHxuV8u1MRbNMJ0OFViEMlzXteg9YTFoj3Q9/z3/V3tNzESp9YxzJpYYuMWRTK78kymzgLKb9dadzEmSSrR5G8wl8zYQtP0eaqSfAMI4bS+3yRABuobEahMnL1izLdaKiJHfMpA3C0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714947999; c=relaxed/simple; bh=+OXx1h0nnZdy7YcNMdNCcPO8uimhtOc9EwORKTugVjQ=; h=Message-ID:Date:MIME-Version:Subject:To:References:From: In-Reply-To:Content-Type; b=URUm9FdQJGUVDmUKVE+nx7Nv4JZ844ESGy+J39g2plAQmUFajiQEbXbg1aJFvuNvI+ukPssOIZYVHXNJcf4xMMtw23jFsYcBLoT8O4wGFwcAIJgyCVZEzDpltmIowrDVPtinsNj2n2jTxnDnVL2fKUg+qA0GIBfExO9H5vJfW44= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=gmx.com; spf=pass smtp.mailfrom=gmx.com; dkim=pass (2048-bit key) header.d=gmx.com header.i=quwenruo.btrfs@gmx.com header.b=nNdYHwvc; arc=none smtp.client-ip=212.227.15.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=gmx.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmx.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmx.com header.i=quwenruo.btrfs@gmx.com header.b="nNdYHwvc" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmx.com; s=s31663417; t=1714947987; x=1715552787; i=quwenruo.btrfs@gmx.com; bh=+OXx1h0nnZdy7YcNMdNCcPO8uimhtOc9EwORKTugVjQ=; h=X-UI-Sender-Class:Message-ID:Date:MIME-Version:Subject:To: References:From:In-Reply-To:Content-Type: Content-Transfer-Encoding:cc:content-transfer-encoding: content-type:date:from:message-id:mime-version:reply-to:subject: to; b=nNdYHwvcvEHpWu4Ogi96p7M4cWeOHfB7KN9rUfI+y9icsBvDO8kg7yQ7Cskb2HGP VJEES83Ljvqd28Ve6MCIURzn4zsR7bPC9IbAQMpOY0HUWazb6pkym2dgL9Svej6RD cK1dW+GsMj2tVJnTR6JzSgmCD4Iv2fpv3wbYnEIXW+8y000xTnTGT7UlZhWSgn5cA 40MZJZ4DdqOHiVEuhhDDqKqpmv9nWXcITv6vDVQAAmCa8yLzkJ8eI4xdsLiqxhxOy FFw1HE1Rv18H59AEFoiBAft/oqBG/JSfbwwyXWMISNiUhNw0PR7zjzVNmtY8CE3MI XXurjRm5C18EDO+O0A== X-UI-Sender-Class: 724b4f7f-cbec-4199-ad4e-598c01a50d3a Received: from [172.16.0.219] ([159.196.52.54]) by mail.gmx.net (mrgmx004 [212.227.17.184]) with ESMTPSA (Nemesis) id 1MvbBk-1swOMm3930-00r5Ii; Mon, 06 May 2024 00:26:27 +0200 Message-ID: <0fe390c1-c6da-491a-88c2-9d419d2486c0@gmx.com> Date: Mon, 6 May 2024 07:56:22 +0930 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: Help with ROFS on Cache Folder Deletion To: Eliza May , linux-btrfs@vger.kernel.org References: <2236adc5-3520-4ceb-ad88-5bcc6afd18d0@riseup.net> <3b8eed12-0fb0-4bcd-9b32-1d04d89cc780@gmx.com> <7b7cf8e4-90ff-438d-817a-445ce13f5767@riseup.net> Content-Language: en-US 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: <7b7cf8e4-90ff-438d-817a-445ce13f5767@riseup.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:Ci8NKf0m6z5X+PlbZRp/uw2HYwNjuzpaLJ+yUiT59H/sA4bWSv4 lB0qrzWx4FLmKYEu3Xpunam0PratG1xc99wa+jz6Qmf497iV/SslmouXW065crNYsfOj1Ml KXmQz6zhWx5fyAt2h5ZAfZ+CRgYfzt6oeuYKy6ZOUuCSOUeq2+hjSrmafcPdd1ZZVFjmexF K+8u5lJcYYBWC2UlXfoeg== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:3bAYUPoMNUM=;mGXOZWrVG4HUgtGvD571eH8B3Ha o+U57m1yzXNQIWlTLwRPAT+8qD9+4Y+xS1j+16te8GNqPX+0281UpFvncuKUS7tuLnO/aHQcK MeRbEZ8gJMtmfaXotCOcWHbAP0E5mekKLrLVacuKu3XeNI5xZQnZHHHPmkJ3rX8KS8hbHoFtU uLcHt1sgeMAZ6zqSU45Qp14QqA5qaCKF06uNpC+iTOD2ytMI/j+S5UHNh1jITAYEYQUXDkupY Kyf8Q1IhUOSEQoMymT5TyK0z3DlFs68ZWuC+FAdH3uISRFimvxmcaYDPu/fNsOkxXrj8I2OOu Sxq+Wp55aP3rJmDAeEyTZHdvsetLtANK42gKeKIZoBYRmrFprFXuVR1RbxPLztbmZk0jRktCz 9miwcgWpBXhR/30KrV0RTBOwnhngGfMoD3xLhc46iAbzVIK1b8UYFJiCBYkpRKBht0vltBTfv kPqdbBt1tEk9tE+cTFGlTO2l5JQJx/1FcLlSHfcRDnULb72mD9fD5NTEzd9yKNMRGgBaVm6Sr WfqVY3rezc+SUOlskcHY6cWqlJA/9GAk6TAfjOQ+b6duC91oktzhBA0lP0WmVeFEAJGuAULwx RWR5fUxpfrhUH6ucuCKzI198v7QKqPPK1JXW9GHJBLoTL0lHF7cTjvWVRvE4ntlhcOHGnr4wh 794sYs0+YK1rFAF9YU81UMgB0lF/88U1eg9Y2hTyjy2JzCWpOZWDD+dOXBKuwtFCrBmHoYlrC Sfe3Sgs7QzBFbTmz4YEpDeUzJZZV+wbX0ql9xM1JzSh3cNACIAGCu29ApBne/48sh/4C7nWZe fKilJVrz0eRc4OB7KvnXtdX9ljFjKJLDSp6Ow0V50KPHM= =E5=9C=A8 2024/5/6 06:02, Eliza May =E5=86=99=E9=81=93: > Hi all, > > I have run the tests, removed the failing ram, and the results are here: > > https://termbin.com/rrsn > > Is this recoverable with a repair? Yes. That bitflip introduced backref item is the only corruption, thus "btrfs check --repair" should be able to handle it. Thanks, Qu > > (My other filesystem returned no errors, and is not included in this.) > > Thank you, > > Eliza > > > On 5/2/24 12:17 AM, Qu Wenruo wrote: >> >> >> =E5=9C=A8 2024/5/2 15:59, Eliza May =E5=86=99=E9=81=93: >>> Hi, >>> >>> >>> I am trying to remove the paru .cache folder from my computer, but eve= ry >>> time I do my btrfs filesystem goes read-only. Here is the dmesg output= : >>> https://termbin.com/f4sw >>> >>> A scrub found no errors, and I have not yet ran a check -- I will be >>> doing so and reporting back when I figure out how to do so. >>> >>> >>> My filesystem is a main partition, a separate home subvolume, a var/lo= g >>> subvolume, and a /var/cache/pacman/pkg subfolder, but I am attempting = to >>> delete the paru one; not the pacman one. >>> >>> >>> If there are any other logs or details I should include, let me know. >> >> The dump tree shows: >> >> [ 1623.783513]=C2=A0=C2=A0=C2=A0=C2=A0 item 97 key (3069062266880 169 0= ) itemoff 13049 >> itemsize 33 >> [ 1623.783514]=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 extent r= efs 1 gen 1396868 flags 2 >> [ 1623.783515]=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 ref#0: t= ree block backref root 16391 >> ... >> [ 1623.783683] BTRFS critical (device nvme0n1p2: state EA): unable to >> find ref byte nr 3069062266880 parent 0 root 7 owner 0 offset 0 slot 98 >> >> This means the bytenr 3069062266880 should have a tree backref for >> root 7. >> But the dump tree shows it belongs to root 16391. >> >> Furthermore this looks like a memory biflip: >> >> hex(7)=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0x0007 >> hex(16391) =3D 0x4007 >> >> So please unmount all your fs and run a memtest first to make sure your >> hardware memory is working correctly. >> And do necessary memory replacement (if possible). >> >> Then finally run "btrfs check --readonly" for the unmounted fs, to make >> sure that is the only error (please paste the output). >> >> Then we can determine if it's safe to run "btrfs check --repair" or >> there are too many corruption and can only do a data salvage. >> (I bet a repair can be done, but still want to be sure) >> >> Thanks, >> Qu >>> >>> >>> Thank you, >>> >>> Eliza >>> >>>