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Date:      Thu, 03 Sep 2020 21:32:15 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 249090] Regression in /boot/zfsloader between 11.1 and 11.2
Message-ID:  <bug-249090-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D249090

            Bug ID: 249090
           Summary: Regression in /boot/zfsloader between 11.1 and 11.2
           Product: Base System
           Version: 12.1-RELEASE
          Hardware: sparc64
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: carton@Ivy.NET

I've been attempting the instructions at:

 https://wiki.freebsd.org/RootOnZFS/VTOC8ZFSBoot/9.x-RELEASE

with FreeBSD 12.1.  tl;dr there's a regression in /boot/zfsloader
between 11.1 and 11.2, so it doesn't work any more.  11.1's zfsloader
can boot 12.1, though.

The system is a Netra X1, "flapjack lite" with PATA disks.

12.1 -- fails
-----8<-----
Executing last command: boot disk2=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
Boot device: /pci@1f,0/ide@d/disk@2,0  File and args:=20

>> FreeBSD/sparc64 ZFS boot block
   Boot path:   /pci@1f,0/ide@d/disk@2,0:a
Consoles: Open Firmware console=20=20

FreeBSD/sparc64 bootstrap loader, Revision 1.0
bootpath=3D"/pci@1f,0/ide@d/disk@2,0:a"
\
can't load 'kernel'

Type '?' for a list of commands, 'help' for more detailed help.
OK reboot
-----8<-----

11.2 -- fails
-----8<-----
Executing last command: boot disk2=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
Boot device: /pci@1f,0/ide@d/disk@2,0  File and args:=20

>> FreeBSD/sparc64 ZFS boot block
   Boot path:   /pci@1f,0/ide@d/disk@2,0:a
Consoles: Open Firmware console=20=20

FreeBSD/sparc64 ZFS enabled bootstrap loader, Revision 1.0
(Fri Jun 22 04:07:46 UTC 2018 root@releng2.nyi.freebsd.org)
bootpath=3D"/pci@1f,0/ide@d/disk@2,0:a"
\
can't load 'kernel'

Type '?' for a list of commands, 'help' for more detailed help.
OK lsdev -v
net devices:
        net0: (net0)
OK lszfs zfs:zroot:
device not configured
OK reboot
Rebooting...
Program terminated
ok=20
-----8<-----

11.1 -- works
-----8<-----
Executing last command: boot disk2=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
Boot device: /pci@1f,0/ide@d/disk@2,0  File and args:=20

>> FreeBSD/sparc64 ZFS boot block
   Boot path:   /pci@1f,0/ide@d/disk@2,0:a
Consoles: Open Firmware console=20=20
\
FreeBSD/sparc64 ZFS enabled bootstrap loader, Revision 1.0
(Fri Jul 21 08:44:42 UTC 2017 root@releng2.nyi.freebsd.org)
bootpath=3D"zfs:zroot/ROOT/uncompress:"
Loading /boot/defaults/loader.conf=20
/boot/kernel/kernel data=3D0xbbc358+0xd7880 syms=3D[0x8+0xc8f70+0x8+0xbab1c]
/boot/kernel/zfs.ko text=3D0x233a98 data=3D0xa758+0x18380
syms=3D[0x8+0x1a1a8+0x8+0x151d1]
loading required module 'opensolaris'
/boot/kernel/opensolaris.ko text=3D0x30b0 data=3D0x2c8+0x2030
syms=3D[0x8+0xd80+0x8+0x91d]
/boot/zfs/zpool.cache size=3D0x68c

Hit [Enter] to boot immediately, or any other key for command prompt.
Booting [/boot/kernel/kernel] in 9 seconds...=20

Type '?' for a list of commands, 'help' for more detailed help.
OK lsdev -v
block devices:
net devices:
        net0: (net0)
zfs devices:
  pool: zroot
bootfs: zroot/ROOT/uncompress
config:

        NAME STATE
        zroot DEGRADED
          mirror DEGRADED
            ada0 ONLINE
            ada0a OFFLINE
OK lszfs zfs:zroot:
lszfs not found
OK boot
Booting...
jumping to kernel entry at 0xc0098000.
Copyright (c) 1992-2014 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 9.3-RELEASE #0 r268512: Fri Jul 11 12:43:37 UTC 2014
    root@snap.freebsd.org:/usr/obj/sparc64.sparc64/usr/src/sys/GENERIC spar=
c64
gcc version 4.2.1 20070831 patched [FreeBSD]
[etc. . .]
-----8<-----


Other things that do work:

 - 'gpart' from FreeBSD 12.1 can be used to install 11.1 boot blocks.


 - The 11.1 boot blocks will still boot the latest 12.1.

   I did not push my luck by upgrading pool feature flags past 11.1 on
   the root pool, so I'm not sure if that works or not.  Instead, I
   ran 'zpool create' under 11.1, and used 'zfs send | zfs recv' to
   install a 12.1 system on the new pool and was able to boot the new pool.

--=20
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