[Bug 1246741] [NEW] check_disk returns 0MB in use for zfs filesystem

[Christopher Johnson]

Public bug reported:

In the performance data returned by check_disk the value for MB in use is always zero.
$ /usr/lib/nagios/plugins/check_disk -w '10%' -c '5%' -e -p /tank -p /
DISK OK| /tank=0MB;3005801;3172790;0;3339779 /=7522MB;84365;89052;0;93739

Tank is a ZFS mountpoint/filesystem.
$ df /tank /
Filesystem      1K-blocks    Used  Available Use% Mounted on
tank           3419934254      32 3419934222   1% /tank
/dev/sda1        95989516 7703148   83403632   9% /

Results from check_disk are the same when run as root

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: nagios-plugins-basic 1.4.16-2ubuntu2
ProcVersionSignature: Ubuntu 3.8.0-25.37-generic 3.8.13
Uname: Linux 3.8.0-25-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.12.5-0ubuntu2.1
Architecture: amd64
Date: Thu Oct 31 09:51:01 2013
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-05-29 (154 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
SourcePackage: nagios-plugins
UpgradeStatus: Upgraded to saucy on 2013-10-17 (13 days ago)

** Affects: nagios-plugins (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug saucy

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https://bugs.launchpad.net/bugs/1246741

Title:
  check_disk returns 0MB in use for zfs filesystem

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