On Sat, Feb 29, 2020 at 8:48 AM 4e868df3 <4e868df3@xxxxxxxxx> wrote: > > It came up with some kind of `840 abort`. Then I reran btrfs check and > tried again. > > $ btrfs check --init-csum-tree /dev/mapper/luks0 > Creating a new CRC tree > WARNING: > > Do not use --repair unless you are advised to do so by a developer > or an experienced user, and then only after having accepted that no > fsck can successfully repair all types of filesystem corruption. Eg. > some software or hardware bugs can fatally damage a volume. > The operation will start in 10 seconds. > Use Ctrl-C to stop it. > 10 9 8 7 6 5 4 3 2 1 > Starting repair. > Opening filesystem to check... > Checking filesystem on /dev/mapper/luks0 > UUID: 8c1dea88-fa40-4e6e-a1a1-214ea6bcdb00 > Reinitialize checksum tree > Unable to find block group for 0 > Unable to find block group for 0 > Unable to find block group for 0 > ctree.c:2272: split_leaf: BUG_ON `1` triggered, value 1 > btrfs(+0x71e09)[0x564eef35ee09] > btrfs(btrfs_search_slot+0xfb1)[0x564eef360431] > btrfs(btrfs_csum_file_block+0x442)[0x564eef37c412] > btrfs(+0x35bde)[0x564eef322bde] > btrfs(+0x47ce4)[0x564eef334ce4] > btrfs(main+0x94)[0x564eef3020c4] > /usr/lib/libc.so.6(__libc_start_main+0xf3)[0x7ff12a43e023] > btrfs(_start+0x2e)[0x564eef30235e] > [1] 840 abort sudo btrfs check --init-csum-tree /dev/mapper/luks0 > > $ btrfs check /dev/mapper/luks0 > Opening filesystem to check... > Checking filesystem on /dev/mapper/luks0 > UUID: 8c1dea88-fa40-4e6e-a1a1-214ea6bcdb00 > [1/7] checking root items > [2/7] checking extents > [3/7] checking free space cache > [4/7] checking fs roots > [5/7] checking only csums items (without verifying data) > there are no extents for csum range 68757573632-68757704704 > Right section didn't have a record > there are no extents for csum range 68754427904-68757704704 > csum exists for 68750639104-68757704704 but there is no extent record > there are no extents for csum range 68760719360-68761223168 > Right section didn't have a record > there are no extents for csum range 68757819392-68761223168 > csum exists for 68757819392-68761223168 but there is no extent record > there are no extents for csum range 68761362432-68761378816 > Right section didn't have a record > there are no extents for csum range 68761178112-68836831232 > csum exists for 68761178112-68836831232 but there is no extent record > there are no extents for csum range 1168638763008-1168638803968 > csum exists for 1168638763008-1168645861376 but there is no extent > record > ERROR: errors found in csum tree > [6/7] checking root refs > [7/7] checking quota groups skipped (not enabled on this FS) > found 3165125918720 bytes used, error(s) found > total csum bytes: 3085473228 > total tree bytes: 4791877632 > total fs tree bytes: 1177714688 > total extent tree bytes: 94617600 > btree space waste bytes: 492319296 > file data blocks allocated: 3160334041088 > referenced 3157401378816 > > $ btrfs check --init-csum-tree /dev/mapper/luks0 > Creating a new CRC tree > WARNING: > > Do not use --repair unless you are advised to do so by a developer > or an experienced user, and then only after having accepted that no > fsck can successfully repair all types of filesystem corruption. Eg. > some software or hardware bugs can fatally damage a volume. > The operation will start in 10 seconds. > Use Ctrl-C to stop it. > 10 9 8 7 6 5 4 3 2 1 > Starting repair. > Opening filesystem to check... > Checking filesystem on /dev/mapper/luks0 > UUID: 8c1dea88-fa40-4e6e-a1a1-214ea6bcdb00 > Reinitialize checksum tree > Unable to find block group for 0 > Unable to find block group for 0 > Unable to find block group for 0 > ctree.c:2272: split_leaf: BUG_ON `1` triggered, value 1 > btrfs(+0x71e09)[0x559260a6de09] > btrfs(btrfs_search_slot+0xfb1)[0x559260a6f431] > btrfs(btrfs_csum_file_block+0x442)[0x559260a8b412] > btrfs(+0x35bde)[0x559260a31bde] > btrfs(+0x47ce4)[0x559260a43ce4] > btrfs(main+0x94)[0x559260a110c4] > /usr/lib/libc.so.6(__libc_start_main+0xf3)[0x7f212eb1f023] > btrfs(_start+0x2e)[0x559260a1135e] > [1] 848 abort sudo btrfs check --init-csum-tree /dev/mapper/luks0 A crash is a bug, but at least it didn't make the problem worse. I'm not sure if 5.4.1 can do any better, but it's the current version. -- Chris Murphy
