[Bug 288881] ZFS checksum error at `software' level

From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 16 Aug 2025 10:23:56 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=288881

--- Comment #6 from dirkx@webweaving.org ---
Extra data point (which may be completely unrelated - but was trying to see if
I could somehow see what file this area is / trigger the bug:

     $ sudo zdb -y zroot
     Verifying deleted livelist entries
     Verifying metaslab entries
     verifying concrete vdev 0, metaslab 0 of 101 ...ASSERT at
/usr/src/sys/contrib/openzfs/cmd/zdb/zdb.c:482:verify_livelist_allocs()
((size) >> (9)) - (0) < 1ULL << (24) (0x16277e0 < 0x1000000)
       PID: 94264     COMM: zdb
       TID: 100575    NAME: 
     Abort (core dumped)
     $ sudo zpool version; uname -a
     zfs-2.2.7-FreeBSD_ge269af1b3
     zfs-kmod-2.2.7-FreeBSD_ge269af1b3
     FreeBSD jade.webweaving.org 14.3-RELEASE FreeBSD 14.3-RELEASE
releng/14.3-n271432-8c9ce319fef7 GENERIC amd64

I.e zdb dislikes something on this volume quite a but. Zpool version
information below. No idea if this is a co-incidence or related.

Dw.

$ sudo zpool get all zroot
NAME   PROPERTY                       VALUE                          SOURCE
zroot  size                           25.2T                          -
zroot  capacity                       39%                            -
zroot  altroot                        -                              default
zroot  health                         ONLINE                         -
zroot  guid                           9684494183840982639            -
zroot  version                        -                              default
zroot  bootfs                         zroot/ROOT/default             local
zroot  delegation                     on                             default
zroot  autoreplace                    off                            default
zroot  cachefile                      -                              default
zroot  failmode                       wait                           default
zroot  listsnapshots                  on                             local
zroot  autoexpand                     off                            default
zroot  dedupratio                     1.00x                          -
zroot  free                           15.2T                          -
zroot  allocated                      10.0T                          -
zroot  readonly                       off                            -
zroot  ashift                         0                              default
zroot  comment                        -                              default
zroot  expandsize                     -                              -
zroot  freeing                        0                              -
zroot  fragmentation                  3%                             -
zroot  leaked                         0                              -
zroot  multihost                      off                            default
zroot  checkpoint                     -                              -
zroot  load_guid                      11499733271264335338           -
zroot  autotrim                       off                            default
zroot  compatibility                  off                            default
zroot  bcloneused                     0                              -
zroot  bclonesaved                    0                              -
zroot  bcloneratio                    1.00x                          -
zroot  feature@async_destroy          enabled                        local
zroot  feature@empty_bpobj            active                         local
zroot  feature@lz4_compress           active                         local
zroot  feature@multi_vdev_crash_dump  enabled                        local
zroot  feature@spacemap_histogram     active                         local
zroot  feature@enabled_txg            active                         local
zroot  feature@hole_birth             active                         local
zroot  feature@extensible_dataset     active                         local
zroot  feature@embedded_data          active                         local
zroot  feature@bookmarks              enabled                        local
zroot  feature@filesystem_limits      enabled                        local
zroot  feature@large_blocks           enabled                        local
zroot  feature@large_dnode            enabled                        local
zroot  feature@sha512                 enabled                        local
zroot  feature@skein                  enabled                        local
zroot  feature@edonr                  enabled                        local
zroot  feature@userobj_accounting     active                         local
zroot  feature@encryption             active                         local
zroot  feature@project_quota          active                         local
zroot  feature@device_removal         enabled                        local
zroot  feature@obsolete_counts        enabled                        local
zroot  feature@zpool_checkpoint       enabled                        local
zroot  feature@spacemap_v2            active                         local
zroot  feature@allocation_classes     enabled                        local
zroot  feature@resilver_defer         enabled                        local
zroot  feature@bookmark_v2            enabled                        local
zroot  feature@redaction_bookmarks    enabled                        local
zroot  feature@redacted_datasets      enabled                        local
zroot  feature@bookmark_written       enabled                        local
zroot  feature@log_spacemap           active                         local
zroot  feature@livelist               active                         local
zroot  feature@device_rebuild         enabled                        local
zroot  feature@zstd_compress          enabled                        local
zroot  feature@draid                  enabled                        local
zroot  feature@zilsaxattr             active                         local
zroot  feature@head_errlog            active                         local
zroot  feature@blake3                 enabled                        local
zroot  feature@block_cloning          enabled                        local
zroot  feature@vdev_zaps_v2           active                         local

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