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Sun, 02 Jun 2024 05:29:16 +0200 Message-ID: <66fafc1b-3339-4336-a715-eb744d93155c@gmx.com> Date: Sun, 2 Jun 2024 12:59:12 +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: file system failure after hard reboot support request To: William Rotach , linux-btrfs@vger.kernel.org References: <51b057bf-ce55-4649-a70d-a7b4c7b8981d@binghamton.edu> 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: <51b057bf-ce55-4649-a70d-a7b4c7b8981d@binghamton.edu> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:nVsHjGWbHAbu6wmv9bqkOvpiFzYgWjt0hCUZ504F+vuebnV3c7e FQphqBmxYBvNB8dZFPtKlfQ0mfiFiXjzPdD8YHJIH+xi+Bk2p1IHJVjpNRrMY+PsbHxnf+j rkvzYhIXE+eqzrn3evL2ZymMNvGSWH55yWcIKpw/pHWKxBQmTr3Cfh9HT/MAUNt/qvs5FkY 7fUVeRbLT5zkR8l+eToww== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:6F+0O10okt0=;ZnsvVbmMDInkRoWkAIr/2YAvSNc BwHpGUPD6TRRoeajgHQw12s17JV9Huz/tk200jw0Vo2oyT0jwJCubxRMZtw6lsowXkKqgTHuz rhOln1qyYsywxCzaHO2+31PPa/oTU3jmt4wFvS6HG6Iv1ceHcx6OiXBNKWFdjTau2EeEByEkO P9YzWI+w2qJxLb1ZqK+bP1F8OSMlwy5k0iyHNyO1m3uQY0qC7TosSqsNOaeJbF+7TcikW/U0x h+vohFzw6WSEPiDhR4VaZDT6AtiZXUZPS5EN3wJWf3/9J4LIOkLDEz/ZTHmdCHaU5dWFKbOkX 0aVhOYvj7vlGdsW3MGud6pxkvpK1nfbtpMyMpkUHcaXUjNNYSheJGQ2CxqtPTltGIEFO/jKlF 684Twh6QLQPPCi0uUAGsbAl3i8lVAe1eB8KX8Cq8UvpynQnAPHkFKKunNfjewdkEduPk0GaFg HY2nrnr09YNqstakC1bmAPSoySRq7MiS6jLAsEhFwdteVMl6MxmIGKb6+lAvug5FqQJXu4uMK acCnO4NaRQTGlkDPTzc7Dh9IDAgyxp/eJZSJYBLlU/ALKzGKVJ5miI95AdCRdO9zoLGLKMp8J F9jn28sIE00QLRZr56+mYGQIyUsHjsBoWH9/xgk3CiPQvJY3yEjpVSX95Y0R6oE/pwHheJX9T nSd/KnxL9hcuLmw0aVmM7nCVXjL2MJe7CVUiz5w70vwXArBo52uFyjSqAJlchbg3zOMbz9z9N gxitYpU1OQQk+vLINxyjSNVDSesfgrSx842pBWeGJWdEONaVT8wiz+W9zfKtWt1o/UHxmbpTJ 2DWerOgia5hPGr3Q3E4C5PIantwKnLgYuiEFMe+T1xyz0= =E5=9C=A8 2024/6/2 11:30, William Rotach =E5=86=99=E9=81=93: > > =C2=A0 I have reached out to a couple different locations for help with > BTRFS, and I have reached a dead end at my google-foo, and my > distributions discussion boards.=C2=A0 If there is a better place to ask= for > help with respect to a hard file system crash, please let me know. > =C2=A0 I have a corrupted BTRFS file system, with a quick summary in bu= llet > points: > -=C2=A0=C2=A0=C2=A0 single new NVME, 6 months old, 2Tb size, 1Tb used, 2= 00Mb of really > needed stuff > -=C2=A0=C2=A0=C2=A0 one backup exists, 6 months old, still need the new = copies of above > needed files > -=C2=A0=C2=A0=C2=A0 Fedora 39 > -=C2=A0=C2=A0=C2=A0 chromium, high tab count, apparent culprit > -=C2=A0=C2=A0=C2=A0 hard system lock (no ssh response, no console switch= ing) > -=C2=A0=C2=A0=C2=A0 repeated hard system restarts, last one crashed btrf= s file system > -=C2=A0=C2=A0=C2=A0 btrfs hard failures: > -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 parent transid; > -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 checksum; > -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 bytenr; > -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 search for next directory; > -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 can't read tree root; > -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 bad tree block start; > -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 212 found roots, none seem t= o have a "good match", as noted above Full "btrfs check --readonly" output please, not some truncated output. Meanwhile you can try "-o rescue=3Dall,ro mount" option to see if it can mount, and the dmesg for such attempt. But according to the "can't read tree root" line, rescue mount may not hel= p. Thanks, Qu > > =C2=A0 I started looking into the kernel driver source code to help my > understanding of the physical layout, and may build a more forensic > method of retrieving the binary/text data that I need.=C2=A0 I hope ther= e is > something that is already included in the btrfs-progs packaging, > available through the source code, or by the developer team itself. >