[Bug 247544] zvol: unbootable system with root on zfs [regression]

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=247544

--- Comment #3 from Evilham <contact at evilham.com> ---
(In reply to Andriy Gapon from comment #2)
I don't have swap on zvol, sorry for not sending more complete information in
the first place.

Please let me know if I can help provide more information.


# This partitioning scheme was created by the installer:
# gpart show
=>        40  1000215136  nda0  GPT  (477G)
          40      409600     1  efi  (200M)
      409640        1024     2  freebsd-boot  (512K)
      410664         984        - free -  (492K)
      411648     4194304     3  freebsd-swap  (2.0G)
     4605952   995608576     4  freebsd-zfs  (475G)
  1000214528         648        - free -  (324K)

# This zpool was also created by the installer
# zpool status zroot
  pool: zroot
 state: ONLINE
status: Some supported features are not enabled on the pool. The pool can
        still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
        the pool may no longer be accessible by software that does not support
        the features. See zpool-features(7) for details.
  scan: scrub repaired 0 in 0 days 00:14:28 with 0 errors on Thu Dec 19
11:37:05 2019
checkpoint: created Thu Jun 25 18:13:14 2020, consumes 586M
config:

        NAME          STATE     READ WRITE CKSUM
        zroot         ONLINE       0     0     0
          nda0p4.eli  ONLINE       0     0     0

errors: No known data errors

# This is the only zvol in the 'zroot' zpool
# zfs list zroot/things
NAME            USED  AVAIL  REFER  MOUNTPOINT
zroot/things  2,79G  17,2G   265M  -

# The zroot/things zvol is actually geli-encrypted with a zpool in it
# the 'nested' zpool shouldn't be relevant for the boot sequence though as
# this zvol is decrypted only manually
# geli attach /dev/zvol/zroot/things
# zpool status things
  pool: things
 state: ONLINE
status: Some supported features are not enabled on the pool. The pool can
        still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
        the pool may no longer be accessible by software that does not support
        the features. See zpool-features(7) for details.
  scan: none requested
config:

        NAME                      STATE     READ WRITE CKSUM
        things                   ONLINE       0     0     0
          zvol/zroot/things.eli  ONLINE       0     0     0

errors: No known data errors

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