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Re: [Cluster-devel] GFS2: Update main gfs2 doc

On 5/10/2012 3:13 PM, Steven Whitehouse wrote:
> Hi,
> On Thu, 2012-05-10 at 15:09 +0200, Fabio M. Di Nitto wrote:
>> On 5/10/2012 2:11 PM, Steven Whitehouse wrote:
>>> >From 49f30789fc33c4516fbe123f05ea4313866381d3 Mon Sep 17 00:00:00 2001
>>> From: Steven Whitehouse <swhiteho redhat com>
>>> Date: Thu, 10 May 2012 11:45:31 +0100
>>> Subject: [PATCH 1/2] GFS2: Update main gfs2 doc
>>> Various items were a bit out of date, so this is a refresh to the
>>> latest info.
>>> Signed-off-by: Steven Whitehouse <swhiteho redhat com>
>>> diff --git a/Documentation/filesystems/gfs2.txt b/Documentation/filesystems/gfs2.txt
>>> index 4cda926..cc4f230 100644
>>> --- a/Documentation/filesystems/gfs2.txt
>>> +++ b/Documentation/filesystems/gfs2.txt
>>> @@ -1,7 +1,7 @@
>>>  Global File System
>>>  ------------------
>>> -http://sources.redhat.com/cluster/wiki/
>>> +https://fedorahosted.org/cluster/wiki/HomePage
>>>  GFS is a cluster file system. It allows a cluster of computers to
>>>  simultaneously use a block device that is shared between them (with FC,
>>> @@ -30,7 +30,8 @@ needed, simply:
>>>  If you are using Fedora, you need to install the gfs2-utils package
>>>  and, for lock_dlm, you will also need to install the cman package
>>> -and write a cluster.conf as per the documentation.
>>> +and write a cluster.conf as per the documentation. For F17 and above
>>> +cman has been replaced by the dlm package.
>> ^^^ cman has been replaced by corosync 2.0 (or higher) in combination
>> with votequorum provide (see votequorum.5).
> corosync was always a requirement though, it gets pulled in through the
> deps

No disagreement on the dependency here, but cman is not replaced by dlm
in terms of functionality, that would be incorrect.

>> gfs2 still requires dlm for it´s dependencies but it´s not a replacement.
> Well it is kind of, since thats where dlm_controld resides and that now
> deals with all the recovery stuff now that gfs_controld is gone, so
> maybe it could have been worded better, but it at least is correct in
> terms of what needs to be installed package-wise,

Right, package wise you are right, you install dlm and you get corosync
indirectly. I was only pointing out the functionality chain here vs
package chain.

It might be better to express both in a doc since the landscape has
changed substantially.


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