From owner-freebsd-stable@freebsd.org  Wed May 10 16:18:00 2017
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To: freebsd-stable@freebsd.org
From: Miroslav Lachman <000.fbsd@quip.cz>
Subject: Missing units in df -h output
Message-ID: <59133BDC.8080509@quip.cz>
Date: Wed, 10 May 2017 18:12:12 +0200
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Today I noticed missing units (G) in the output of 'df -h' command if 
size is exactly 1000G

This is on FreeBSD 10.3-RELEASE-p18 amd64 GENERIC

/# df -h /vol0/remote_backup/rico
Filesystem                       Size    Used   Avail Capacity  Mounted on
tank0/vol0/remote_backup/rico    1.4T    1000    443G    69% 
/vol0/remote_backup/rico

The same without -h

# df /vol0/remote_backup/rico
Filesystem                     1K-blocks       Used     Avail Capacity 
Mounted on
tank0/vol0/remote_backup/rico 1513215636 1048349068 464866568    69% 
/vol0/remote_backup/rico

I don't know if the G suffix is stripped by formatting to columns / size 
of field is limited to 4 characters if '-h' is used or anything else.

The FS is ZFS if this matters.

Is this known issue? Should I file PR for this?

Miroslav Lachman