This looks very similar to the following ZFS bug report
https://github.com/zfsonlinux/zfs/issues/6881
It may indicate you have data corruption and degraded pool. It's hard to tell any further. Have you been able to resolve this issue?
This looks very similar to the following ZFS bug report
https:/ /github. com/zfsonlinux/ zfs/issues/ 6881
It may indicate you have data corruption and degraded pool. It's hard to tell any further. Have you been able to resolve this issue?