openstack/manila
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Update ZFSonLinux share driver docs

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Fix some information about ZFSonLinux share driver to make it
up-to-date with Mitaka version.

TrivialFix

Change-Id: I286ad6e603f1fd0afa069178f0a603174a988544
This commit is contained in:
vponomaryov 2016-03-21 13:25:33 +02:00
parent 07c7e67a89
commit 560f13d4d8
1 changed files with 6 additions and 6 deletions
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12
doc/source/devref/zfs_on_linux_driver.rst
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@ -31,8 +31,7 @@ Requirements
installed.
* For ZFS hosts that support replication:
* SSH access for each other should be passwordless.
* IP used for share exports should be available by ZFS hosts for each other.
* Username should be the same for accessing each of ZFS hosts.
* Service IP addresses should be available by ZFS hosts for each other.
Supported Operations
--------------------
@ -65,6 +64,10 @@ Possibilities
So, status 'in_sync' means latest sync was successful.
Time range between syncs equals to value of
config global opt 'replica_state_update_interval'.
* Driver is able to use qualified extra spec 'zfsonlinux:compression'.
It can contain any value that is supported by used ZFS app.
But if it is disabled via config option with value 'compression=off',
then it will not be used.
Restrictions
------------
@ -78,14 +81,11 @@ The ZFSonLinux share driver has the following restrictions:
one active replica available.
* 'Manage share' operation is not yet implemented.
* 'SaMBa' based sharing is not yet implemented.
* 'Thick provisioning' is not yet implemented.
Known problems
--------------
* Better to avoid usage of Neutron on the same node where ZFS is installed.
It leads to bug - https://bugs.launchpad.net/neutron/+bug/1546723
The ZFSonLinux share driver has workaround for it and requires 'nsenter' be
installed on the system where ZFS is installed.
* 'Promote share replica' operation will make ZFS filesystem that became
secondary as RO only on NFS level. On ZFS level system will
stay mounted as was - RW.