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NOTE: This project is unmaintained. There is a more active fork available at the following URL:

ZFS pool monitoring and notification daemon.

Please see the project web site for general information about features, supported operating environments and to download a tarball or packaged version of this software:

Source repository:

Installing and upgrading on Debian/Ubuntu

Download the .deb package and install it with dpkg, for example:

dpkg -i zfswatcher_0.03-1_amd64.deb

The service is started by default according to the Debian and Ubuntu conventions.

Installing and upgrading on RHEL/CentOS/Scientific Linux

Download the .rpm package and install it with yum, for example:

yum install zfswatcher-0.03-1.x86_64.rpm

The service is not started by default according to Red Hat conventions. It can be started as follows:

service zfswatcher start

Installing from source on Linux and FreeBSD

Generally it is best to use the ready made packages on Debian/Ubuntu and RHEL/CentOS/Scientific Linux.

If you are packaging this software yourself or you want to compile from source for other reasons, you can follow these instructions.


This software is implemented in Go programming language. Further information about installing the Go environment is available at the following URL:

The version 1.0.3 of the Go programming language on a 64 bit platform is recommended.

The software has been developed on Debian 6.0 (squeeze) and Ubuntu 12.04 (precise) but it should work fine on other Linux distributions and also recent FreeBSD versions.


Optionally edit the Makefile to set the installation directories. Then run:



make install


There are some OS/distribution specific startup scripts in "etc" subdirectory. They may be useful.

See the installed zfswatcher(8) manual page for information on invoking the zfswatcher process.

Installing from source on Solaris/OpenSolaris/OpenIndiana

The normal "gc" Go toolchain is not available on this plaform. You need to compile a recent version of gccgo from the Subversion repository at svn:// After that you can utilize the etc/ shell script.

Good luck!


Edit the configuration file:

editor /etc/zfs/zfswatcher.conf

Verify the configuration syntax:

zfswatcher -t

Restart the process:

service zfswatcher restart

Some notes:

  • See the configuration file comments for information about the configuration settings.

  • Enclosure LED management is disabled by default. Currently an external utility ledctl (part of ledmon package) is required for this functionality.

  • Logging to file /var/log/zfswatcher.log and local syslog daemon is enabled by default.

  • E-mail notifications are disabled by default.

  • The embedded web server is disabled by default.

  • If you change the default web interface templates, it is best to copy them from /usr/share/zfswatcher/www to another location and change the templatedir and resourcedir settings in the configuration accordingly. This way your local changes will not be overwritten if you upgrade the package at a later time.


If you encounter a bug, please open an issue at the GitHub issue tracker at:

Reported bugs are fixed on best effort basis.

Commercial support, custom features, custom licensing and complete storage solutions are available from Damicon Kraa Oy. Contact


Contributions and suggestions are welcome. Feel free to open an issue or submit a merge request on GitHub.


Janne Snabb


Copyright © 2012-2013 Damicon Kraa Oy

Zfswatcher is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

Zfswatcher is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with zfswatcher. If not, see


ZFS pool monitoring and notification daemon







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