etc/init.d/README.md


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DESCRIPTION These script were written with the primary intention of
being portable and usable on as many systems as possible.
This is, in practice, usually not possible. But the intention is
there. And it is a good one.
They have been tested successfully on:
* Debian GNU/Linux Wheezy
* Debian GNU/Linux Jessie
* Ubuntu Trusty
* CentOS 6.0
* CentOS 6.6
* Gentoo
SUPPORT If you find that they don't work for your platform, please
report this at the ZFS On Linux issue tracker at https://github.com/zfsonlinux/zfs/issues.
Please include:
* Distribution name
* Distribution version
* Where to find an install CD image
* Architecture
If you have code to share that fixes the problem, that is much
better. But please remember to try your best keep portability in mind.
If you suspect that what you're writing/modifying won't work on anything
else than your distribution, please make sure to put that code in
appropriate if/else/fi code.
It currently MUST be bash (or fully compatible) for this to work.
If you're making your own distribution and you want the scripts to
work on that, the biggest problem you'll (probably) have is the part at
the beginning of the "zfs-functions.in" file which sets up the logging
output.
INSTALLING INIT SCRIPT LINKS To setup the init script links in
/etc/rc?.d manually on a Debian GNU/Linux (or derived) system, run the
following commands (the order is important!):
update-rc.d zfs-zed    start 07 S .       stop 08 0 1 6 .
update-rc.d zfs-import start 07 S .       stop 07 0 1 6 .
update-rc.d zfs-mount  start 02 2 3 4 5 . stop 06 0 1 6 .
update-rc.d zfs-share  start 27 2 3 4 5 . stop 05 0 1 6 .
To do the same on RedHat, Fedora and/or CentOS:
chkconfig zfs-zed
chkconfig zfs-import
chkconfig zfs-mount
chkconfig zfs-share
On Gentoo:
rc-update add zfs-zed boot
rc-update add zfs-import boot
rc-update add zfs-mount boot
rc-update add zfs-share default
The idea here is to make sure ZED is started before the imports (so
that we can start consuming pool events before pools are imported).
Then import any/all pools (except the root pool which is mounted in
the initrd before the system even boots - basically before the S
(single-user) mode).
Then we mount all filesystems before we start any network service
(such as NFSd, AFSd, Samba, iSCSI targets and what not). Even if the
share* in ZFS isn't used, the filesystem must be mounted for the service
to start properly.
Then, at almost the very end, we share filesystems configured with
the share* property in ZFS.