Hello All, My filesystem went read only while converting data from raid-10 to raid-6. I attempted a scrub but it immediately aborted. Can anyone provide some guidance on possibly recovering? Thank you! ##System Details## Ubuntu 18.04 # This shows some read errors but they are not new. I had a SATA cable come loose on a drive some months back that caused these. They haven't increased since I reseated the cable sudo btrfs device stats /mnt/storage-array/ | grep sde [/dev/sde].write_io_errs 0 [/dev/sde].read_io_errs 237 [/dev/sde].flush_io_errs 0 [/dev/sde].corruption_errs 0 [/dev/sde].generation_errs 0 btrfs fi df /mnt/storage-array/ Data, RAID10: total=32.68TiB, used=32.64TiB Data, RAID6: total=1.04TiB, used=1.04TiB System, RAID10: total=96.00MiB, used=3.06MiB Metadata, RAID10: total=40.84GiB, used=39.94GiB GlobalReserve, single: total=512.00MiB, used=512.00MiB uname -r 5.3.0-40-generic ##dmesg## [3813499.479570] BTRFS info (device sdd): no csum found for inode 44197278 start 401276928 [3813499.480211] BTRFS warning (device sdd): csum failed root 5 ino 44197278 off 401276928 csum 0x0573112f expected csum 0x00000000 mirror 2 [3813506.750924] BTRFS error (device sdd): parent transid verify failed on 98952926429184 wanted 6618521 found 6618515 [3813506.751395] BTRFS error (device sdd): parent transid verify failed on 98952926429184 wanted 6618521 found 6618515 [3813506.751783] BTRFS info (device sdd): no csum found for inode 44197278 start 152698880 [3813506.773031] BTRFS warning (device sdd): csum failed root 5 ino 44197278 off 152698880 csum 0x9b7d599f expected csum 0x00000000 mirror 1 [3813506.773070] BTRFS error (device sdd): parent transid verify failed on 98952926429184 wanted 6618521 found 6618515 [3813506.773596] BTRFS error (device sdd): parent transid verify failed on 98952926429184 wanted 6618521 found 6618515 [3813506.774073] BTRFS info (device sdd): no csum found for inode 44197278 start 152698880 [3813506.813401] BTRFS warning (device sdd): csum failed root 5 ino 44197278 off 152698880 csum 0x9b7d599f expected csum 0x00000000 mirror 2 [3813506.813431] BTRFS error (device sdd): parent transid verify failed on 98952926429184 wanted 6618521 found 6618515 [3813506.813439] BTRFS error (device sdd): parent transid verify failed on 98952926429184 wanted 6618521 found 6618515 [3813506.813444] BTRFS info (device sdd): no csum found for inode 44197278 start 152698880 [3813506.813612] BTRFS warning (device sdd): csum failed root 5 ino 44197278 off 152698880 csum 0x9b7d599f expected csum 0x00000000 mirror 3 [3813506.813624] BTRFS error (device sdd): parent transid verify failed on 98952926429184 wanted 6618521 found 6618515 [3813506.813628] BTRFS error (device sdd): parent transid verify failed on 98952926429184 wanted 6618521 found 6618515 [3813506.813632] BTRFS info (device sdd): no csum found for inode 44197278 start 152698880 [3813506.816222] BTRFS warning (device sdd): csum failed root 5 ino 44197278 off 152698880 csum 0x9b7d599f expected csum 0x00000000 mirror 4 [3813510.542147] BTRFS error (device sdd): parent transid verify failed on 104091430649856 wanted 6618521 found 6618516 [3813510.542731] BTRFS error (device sdd): parent transid verify failed on 104091430649856 wanted 6618521 found 6618516 [3813510.543216] BTRFS info (device sdd): no csum found for inode 44197278 start 288227328 [3813510.558299] BTRFS warning (device sdd): csum failed root 5 ino 44197278 off 288227328 csum 0xa0775535 expected csum 0x00000000 mirror 1 [3813510.558341] BTRFS info (device sdd): no csum found for inode 44197278 start 288227328 [3813510.574681] BTRFS warning (device sdd): csum failed root 5 ino 44197278 off 288227328 csum 0xa0775535 expected csum 0x00000000 mirror 2 [3813510.574714] BTRFS info (device sdd): no csum found for inode 44197278 start 288227328 [3813510.574965] BTRFS warning (device sdd): csum failed root 5 ino 44197278 off 288227328 csum 0xa0775535 expected csum 0x00000000 mirror 3 [3813510.574980] BTRFS info (device sdd): no csum found for inode 44197278 start 288227328 [3813510.576050] BTRFS warning (device sdd): csum failed root 5 ino 44197278 off 288227328 csum 0xa0775535 expected csum 0x00000000 mirror 4 [3813510.576070] BTRFS info (device sdd): no csum found for inode 44197278 start 288227328 [3813510.577198] BTRFS warning (device sdd): csum failed root 5 ino 44197278 off 288227328 csum 0xa0775535 expected csum 0x00000000 mirror 5 [3813510.577214] BTRFS info (device sdd): no csum found for inode 44197278 start 288227328 [3813510.578222] BTRFS warning (device sdd): csum failed root 5 ino 44197278 off 288227328 csum 0xa0775535 expected csum 0x00000000 mirror 6
