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Thu, 02 May 2024 09:17:38 +0200 Message-ID: <3b8eed12-0fb0-4bcd-9b32-1d04d89cc780@gmx.com> Date: Thu, 2 May 2024 16:47:32 +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> 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: <2236adc5-3520-4ceb-ad88-5bcc6afd18d0@riseup.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:hYDDszsYo+Gy1GEF2IFLfMimCZgvP+We6DJ439luTKBYkLRs7/D bqxCWdPM8eIU87m1J3EjmMuo6XRQoGooO8m4N+vnruo9P5SZ/1dYZuGBr8+VYlWllZOgiRn gemgLDyHQ7Lx7OE4yhtQiv2w2KUhl8o5o4GXf8uE772uWe1hPsK9YEin4kdYI8rSPDqy7md kQJlTTtKF6PSLLR4lbzbg== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:PH/mszweMvY=;9aVklU5W68Pmtg4uQ+gaRC9m8FW MTXQPRh47QTAEY74m8kgOqG53IfttYbJZGtV6TWA5geMPkcnkMxfAQQQ32bfM569tLG04KaL+ b8hPrKJsyzMGUO9J+GoXVyuNc6yf3Ecsd9MgiN+hX22WIADXYU4l5G/WmMtyLIfNgxCUbFCQc cjuv1PaJ3vj329DHLRYyA3dWTyx2Afa2ZIyI/zarXszb4qH+z2ktCXHqCkDq+sQ5dwTScqgfB vZOlBrleAQ3tDZt7y/zHWotOCoFjJNDeOjDVcBiIH3i3dcwFB3yRF3QaomABGB8m6UipSX/HM /volUlfR7yq5DSzuE0MkexExW6Cca96qShebPR8LNG7mZ9t5fjX0W2iytsar0epNhaa+PsWn4 yP3UNhEPBPKbvfTYI7faSoJjjwpvKhr/tlxdO9sz5IHnaV/jLJzCBHmj06wLSxLJ15eDz79Ru /pU+3sTkBKszh3qLWg+spQMOnqjxix4jslSTIRYLgacPjr0bo6phuWfNTglLi6/YUbWye0+Mg GdTdoPu50D7r577duSOuSdSPiLjCpXn0bhVGM6r+HgQ2YmkTz1Y/KF33MCJQtmbGceFdlEE6y erTUi+vSfnuluWagybdBJ1bdwHIFMQwvgpINgD7Sf1zH/Hnc+e6IzeD5VkzJXAzeXyPj2TaOe P6AVZ1W0vbVmo7wIjkItQjdPTiWwGkoFNNS2QtEfwKfgsk9dNp7QkW/Av1OPwSskWF682Rbpj qEb/oRp25xq64JpH2xJVdiadhfo8NJyhsLf6f5W8wPRKQ1daFfH1TRNSyQ37MQgbA9CvXk+/b MMuHWd1mSVbssctzQejOMZDjjvqQMcqlpiZHCfZOu4IGI= =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 every > 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/log > 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] item 97 key (3069062266880 169 0) itemoff 13049 itemsize 3= 3 [ 1623.783514] extent refs 1 gen 1396868 flags 2 [ 1623.783515] ref#0: tree 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) =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 > >