| Re: Re: lvm and openvz [message #45690 is a reply to message #45689] |
Thu, 29 March 2012 09:09   |
David Brown
Messages: 5
Registered: March 2012
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Junior Member |
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On 29/03/2012 11:04, Kir Kolyshkin wrote:
> On 03/28/2012 11:49 AM, David Brown wrote:
>>
>> I /really/ wish the openvz developers would move beyond kernel
>> 2.6.32 - kernal 2.6.33 introduced snapshot merging to LVM which
>> would play wonderfully with this setup.
>
> I'm not sure why people think that RHEL6 kernel is pure 2.6.32. It is
> definitely not!
>
> For snapshot merging, I am not an expert here but googling for 'rhel6
> lvm snapshot merging' gave me this:
>
> http://www.linuxtopia.org/online_books/rhel6/rhel_6_lvm_admi n/rhel_6_lvm_snapshot_merge.html
>
>
>
> and this:
>
> https://access.redhat.com/knowledge/solutions/58510
>
> Both articles suggest RHEL6 kernel supports LVM snapshot merging, and
> so should OpenVZ RHEL6-based kernel.
>
> PS If you are using non-rhel6 openvz kernel, it's definitely time to
> switch, and lots of reasons to do that besides LVM snapshot merging.
> Notable things are vswap, ploop, stability...
>
> Kir.
I am using a non-rhel6 openvz kernel because I don't use RHEL - I use
Debian on my servers. Are you suggesting that I should specifically use
the RHEL6 openvz kernel even though I use Debian? That's something I
haven't thought of trying, but if it is the recommendation of the OpenVZ
developers, then I will give it a shot.
More generally, I would hope that one day OpenVZ will change over to
following the current kernel (or perhaps the current long-term support
kernels) - there has been a lot of development since 2.6.32, not all of
which gets backported by Red Hat. I'd expect that a lot of OpenVZ code
can be merged with or replaced by the container support in later
kernels. I also think that if OpenVZ doesn't catch up, then people will
migrate to other solutions such as Linux VServer or LXC (I know I
considered it for the last server I configured).
Of course, I fully appreciate that something like that takes a lot of
effort, and that means time, money, people to do the work, testing,
etc., etc. But one can still hope!
David
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