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To: FreeBSD Stable <freebsd-stable@freebsd.org>
From: Miroslav Lachman <000.fbsd@quip.cz>
Subject: zpool get all: Assertion failed / Abort (core dumped)
Message-ID: <5840B804.2080500@quip.cz>
Date: Fri, 2 Dec 2016 00:53:40 +0100
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There is some minor problem with "zpool get all" command if one of two 
pools is unvailable:

# zpool get all
Assertion failed: (nvlist_lookup_nvlist(config, "feature_stats", 
&features) == 0), file 
/usr/src/cddl/lib/libzfs/../../../cddl/contrib/opensolaris/lib/libzfs/common/libzfs_config.c, 
line 250.
Abort (core dumped)


# zpool list
NAME    SIZE  ALLOC  FREE  EXPANDSZ  FRAG   CAP  DEDUP  HEALTH  ALTROOT
ssdtank1  -      -      -         -     -     -      -  UNAVAIL  -
tank0  1.80T  1.08G  1.80T        -    0%    0%  1.00x  ONLINE   -


I understand that it cannot work properly but I think it should not core 
dumped.


Pool details:

# zpool status
   pool: ssdtank1
  state: UNAVAIL
status: One or more devices could not be opened.  There are insufficient
         replicas for the pool to continue functioning.
action: Attach the missing device and online it using 'zpool online'.
    see: http://illumos.org/msg/ZFS-8000-3C
   scan: none requested
config:

         NAME                      STATE     READ WRITE CKSUM
         ssdtank1                  UNAVAIL      0     0     0
           mirror-0                UNAVAIL      0     0     0
             17880119912861428605  UNAVAIL      0     0     0  was 
/dev/gpt/ssd0tank1
             17492271345202510424  UNAVAIL      0     0     0  was 
/dev/gpt/ssd1tank1

   pool: tank0
  state: ONLINE
   scan: none requested
config:

         NAME                STATE     READ WRITE CKSUM
         tank0               ONLINE       0     0     0
           mirror-0          ONLINE       0     0     0
             gpt/disk0tank0  ONLINE       0     0     0
             gpt/disk1tank0  ONLINE       0     0     0

errors: No known data errors


# uname -srmi
FreeBSD 10.3-RELEASE-p12 amd64 GENERIC


Miroslav Lachman