[linux-lvm] Can LVM2 and CLVM co-exist

[linux-lvm] Can LVM2 and CLVM co-exist

[Edward Muller]

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I have a system using LVM2 and recently setup a CORAID (www.coraid.com) 
device. I'd like to use CLVM to manage the volumes on the device. But someone 
mentioned that LVM2 and CLVM may be incompatible. 

I didn't want to trash my test machine at the moment so I was wondering if 
they are compatible or not.

Thx
-- 
Edward Muller - Interlix
edwardam@interlix.com
417-862-0573
PGP Key: http://interlix.com/Members/edwardam/pgpkeys

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Re: [linux-lvm] Can LVM2 and CLVM co-exist

[Patrick Caulfield]

Edward Muller wrote:
> I have a system using LVM2 and recently setup a CORAID (www.coraid.com) 
> device. I'd like to use CLVM to manage the volumes on the device. But someone 
> mentioned that LVM2 and CLVM may be incompatible. 

What exactly are you trying to do?

LVM2 & CLVM can't be incompatible - they are the same thing! installing the
lvm2-cluster RPM doesn't replace any LVM2 components, it provides a new locking
method for clustered VGs and a daemon to distribute the commands across the cluster.

-- 

patrick

Re: [linux-lvm] Can LVM2 and CLVM co-exist

[Edward Muller]

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On Friday 28 October 2005 02:19 am, Patrick Caulfield wrote:
> Edward Muller wrote:
> > I have a system using LVM2 and recently setup a CORAID (www.coraid.com)
> > device. I'd like to use CLVM to manage the volumes on the device. But
> > someone mentioned that LVM2 and CLVM may be incompatible.
>
> What exactly are you trying to do?
>
> LVM2 & CLVM can't be incompatible - they are the same thing! installing the
> lvm2-cluster RPM doesn't replace any LVM2 components, it provides a new
> locking method for clustered VGs and a daemon to distribute the commands
> across the cluster.

What's an RPM? :-)
j/k - This is on gentoo linux and it's a separate package and doesn't depend 
on the lvm package.

But on investigating further I see that they compile lvm with clvm in that 
package. Presumably so you can have different versions of clvm and lvm 
installed. Why you would want to do that I don't know. 

-- 
Edward Muller - Interlix
edwardam@interlix.com
417-862-0573
PGP Key: http://interlix.com/Members/edwardam/pgpkeys

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Re: [linux-lvm] Can LVM2 and CLVM co-exist

[Patrick Caulfield]

Edward Muller wrote:
> On Friday 28 October 2005 02:19 am, Patrick Caulfield wrote:
> 
>>Edward Muller wrote:
>>
>>>I have a system using LVM2 and recently setup a CORAID (www.coraid.com)
>>>device. I'd like to use CLVM to manage the volumes on the device. But
>>>someone mentioned that LVM2 and CLVM may be incompatible.
>>
>>What exactly are you trying to do?
>>
>>LVM2 & CLVM can't be incompatible - they are the same thing! installing the
>>lvm2-cluster RPM doesn't replace any LVM2 components, it provides a new
>>locking method for clustered VGs and a daemon to distribute the commands
>>across the cluster.
> 
> 
> What's an RPM? :-)
> j/k - This is on gentoo linux and it's a separate package and doesn't depend 
> on the lvm package.
> 
> But on investigating further I see that they compile lvm with clvm in that 
> package. Presumably so you can have different versions of clvm and lvm 
> installed. Why you would want to do that I don't know. 

That sounds more like a dangerous idea than a feature !
clvmd & lvm2 really ought to be kept in sync.


-- 

patrick

Re: [linux-lvm] Can LVM2 and CLVM co-exist

[Edward Muller]

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On Monday 31 October 2005 03:59 am, Patrick Caulfield wrote:
[snip]
> > But on investigating further I see that they compile lvm with clvm in
> > that package. Presumably so you can have different versions of clvm and
> > lvm installed. Why you would want to do that I don't know.
>
> That sounds more like a dangerous idea than a feature !
> clvmd & lvm2 really ought to be kept in sync.


Well they are the same versions at least, but yes. I agree.

-- 
Edward Muller - Interlix
edwardam@interlix.com
417-862-0573
PGP Key: http://interlix.com/Members/edwardam/pgpkeys

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