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[2003:d3:c72d:9a00::b87]) by smtp.gmail.com with ESMTPSA id u23sm2668867ejc.108.2020.09.09.07.51.50 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 09 Sep 2020 07:51:50 -0700 (PDT) To: linux-btrfs@vger.kernel.org From: Johannes Rohr Subject: backref mismatch / backpointer mismatch Autocrypt: addr=jorohr@gmail.com; prefer-encrypt=mutual; keydata= mQENBFT1gLABCADcwcj45ysOenaLb8+pkjeb+6oC5IZQ5rgf42l8tCfU6mwwTyaHI/OE9f1f pClmX+dkEFp9HjFK6e33St+HgcXsmarEpVkGVB1oLwhnECuBngqJLbopXL8QfgVkjaNq2aF9 QfR0W2F8BlNDllnJ8q3MToY3RQ2BSkYvsekCS9zJ+8cFrZohpTa9hvtD2tDdHk48A8GaxA7Q CZm3FSbzXEFuGH4TZ4P407b6prXfU8LidTCrkluuM44LhqTGRXmtuVg6jU9vOrkcz8fflGtq Orziu8O32iiL9HU1Oo2wX/vXq9wANj9PAp+cOknXVAH/MeYSIPqo+0pc6ObZxufYyUehABEB AAG0IEpvaGFubmVzIFJvaHIgPGpvcm9ockBnbWFpbC5jb20+iQFOBBMBCAA4FiEEQGpo2KXp zZlAiCX9BQuNsh71kW8FAliYN80CGwMFCwkIBwIGFQgJCgsCBBYCAwECHgECF4AACgkQBQuN sh71kW8GRgf9GKnsiEasxb/0/ngspsDBFCT2GROrA+Qqz7cp14hZVtOkm6nJ7wshAYy+UGfl ovPRi3D3JG/RJvBQHi+rYIBrROOOVbj704AC5oFCUwsFs6pKcnwlRaodIo9u4ZgiYOkNln12 UJxuPL1v7J1ccgypP3ufFZaH9gJGssZtajyQkeCRCKNbBPIbXMSnsTWBqyB4AulnyAwVFJAc 4yga8FaJtiDV334tt2TBNw80yqtDczjbjq/tJkcR5VlzVLpPXpbJ8FCL7K945MmN2fpWgWvj WtqEfnsSW/y1x7OfDWQ8CG1szKc6HVsqkRNQwksJapIdresC2dNe7oT+m9bn0+RWIrkBDQRU 9YCwAQgAu86uORuwnEMOhc1poBRsvWns7G0eMd0vdSaiSAPaP8pQrgTC16wBXJXPxPIhIzfs PnGvHgv21BhGcBRcQ7Ybh56dXnWBuKMNnIz2PcMEdHfjd/NG0SDRZdEl/Eztk143kXxsjMTo 10sGHPVJOFIVG1L9K2XcZ/M4SvvR5rSYW2obRbCtT3EkNAcyynA/xKtOhsAFkCVjO4twytQv Og9rpn02bBrjZqaTCHPzVl7ZpjVD6oykY8uJrgKc4EGMouH3WitZppkWSqaB1hgJp78CjwkB 12mT+YcIoM6xzAIklBzKK4qaV1elHhd5clhbDuSpGor/KJcyolx5hbMFwrT+jQARAQABiQEf BBgBAgAJBQJU9YCwAhsMAAoJEAULjbIe9ZFvhS8H/3hMmBhanQeDumAndrJI14228G9QUSW2 SO92Uzlek/mQwRbIg/+nkLn2aC4RkEYqox+AuQA7TqX+OS7JjFVS9vtsn2ZM+kgvMpzUaKO5 aCjqiyXB4Q3pvg2t46SeuiV1Y3cbyhAH6gzCOei/IMguhYIqNAsf7bf2drN5e1uMHpzJHrBK KugcR5bTfAVQzwnOMPQtPH4mRe7cALp04t4rxSZUiC9Xw9s38oK+Ewk/TtjBEFg4VTDMHdcE B65jlCq15bGxaOSwZbDzx/exLNq41HM3xygY7XFgAdyE6FJLvUc5ehqTjiwsIx3BioRMOTzd 5n0x4xeJ5v4w63j4mSxbZu4= Message-ID: <0219bbee-9ca3-135a-8a2f-5d616000c1e0@gmail.com> Date: Wed, 9 Sep 2020 16:51:49 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Content-Language: en-US Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Dear all, Last night I did a readonly offline check of our server's file system and I got a bunch of backref mismatch / backpointer mismatch errors. Since everybody is warning NOT to use btrfsck --repair, I wonder what options I have of fixing this issue, short of reformatting the whole disk= All the info (uname -a, btrfs fi usage, btrfs check output) is here: https://gist.github.com/vasyugan/45471206df5d9981f51b9bbf9362508f Thanks so much in advance for your advice, Johannes