Hello! Since I saw a few kernel freezes lately (due to experimenting with ck-sources) including some filesystem-related backtraces, I booted my rescue system to check my btrfs filesystem.
Luckily, it showed no problems. It said, everything's fine. But I also thought: Okay, let's try lowmem mode. And that showed a frightening long list of extent corruptions und unreferenced chunks. Should I worry? PS: The freezes seem to be related to bfq, switching to deadline solved these. Full log attached, here's an excerpt: ---8<--- checking extents ERROR: chunk[256 4324327424) stripe 0 did not find the related dev extent ERROR: chunk[256 4324327424) stripe 1 did not find the related dev extent ERROR: chunk[256 4324327424) stripe 2 did not find the related dev extent ERROR: chunk[256 7545552896) stripe 0 did not find the related dev extent ERROR: chunk[256 7545552896) stripe 1 did not find the related dev extent ERROR: chunk[256 7545552896) stripe 2 did not find the related dev extent [...] ERROR: device extent[1, 1094713344, 1073741824] did not find the related chunk ERROR: device extent[1, 2168455168, 1073741824] did not find the related chunk ERROR: device extent[1, 3242196992, 1073741824] did not find the related chunk [...] ERROR: device extent[2, 608854605824, 1073741824] did not find the related chunk ERROR: device extent[2, 609928347648, 1073741824] did not find the related chunk ERROR: device extent[2, 611002089472, 1073741824] did not find the related chunk [...] ERROR: device extent[3, 64433946624, 1073741824] did not find the related chunk ERROR: device extent[3, 65507688448, 1073741824] did not find the related chunk ERROR: device extent[3, 66581430272, 1073741824] did not find the related chunk [...] ERROR: data extent[96316809216 2097152] backref lost ERROR: data extent[96316809216 2097152] backref lost ERROR: data extent[96316809216 2097152] backref lost ERROR: data extent[686074396672 13737984] backref lost ERROR: data extent[686074396672 13737984] backref lost ERROR: data extent[686074396672 13737984] backref lost [...] ERROR: errors found in extent allocation tree or chunk allocation checking free space cache checking fs roots ERROR: errors found in fs roots Checking filesystem on /dev/disk/by-label/system UUID: bc201ce5-8f2b-4263-995a-6641e89d4c88 found 1960075935744 bytes used, error(s) found total csum bytes: 1673537040 total tree bytes: 4899094528 total fs tree bytes: 2793914368 total extent tree bytes: 190398464 btree space waste bytes: 871743708 file data blocks allocated: 6907169177600 referenced 1979268648960 -- Regards, Kai Replies to list-only preferred.
lowmem.txt.gz
Description: application/gzip
