[Bug 250816] AWS EC2 ZFS cannot import its own export!

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=250816

--- Comment #3 from Gunther Schadow <raj at gusw.net> ---
12.0-RC3 amd64 works!
-------------------------------------------------
$ su
root at freebsd:/usr/home/ec2-user # sh
# uname -a
FreeBSD freebsd 12.0-RC3 FreeBSD 12.0-RC3 r341271 GENERIC  amd64
# mkdir zfstc
# truncate -s 100M zfstc/0
# truncate -s 100M zfstc/1
# mkdir zfstd
# for i in zfstc/* ; do ln -s /dev/$(mdconfig -a -t vnode -f $i)
zfstd/$(basename $i) ; done
#
# zpool create -o feature at embedded_data=enabled -o feature at lz4_compress=enabled
-O dedup=on -O compression=lz4 testpool raidz $(for i in zfstd/* ; do readlink
$i ; done)
# zpool list
NAME       SIZE  ALLOC   FREE  CKPOINT  EXPANDSZ   FRAG    CAP  DEDUP  HEALTH 
ALTROOT
testpool   176M   174K   176M        -         -     1%     0%  1.00x  ONLINE 
-
# zpool export testpool
# zpool import -d zfstd
   pool: testpool
     id: 3192103039539057096
  state: ONLINE
 action: The pool can be imported using its name or numeric identifier.
 config:

        testpool    ONLINE
          raidz1-0  ONLINE
            md0     ONLINE
            md1     ONLINE
#
# shutdown -p now
Shutdown NOW!
-----------------------------------------

So now, I think, I showed you how this might be an issue introduced only
through 12.1 and .2 and possibly it is a matter how this EC2 AMI is put
together.

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