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Re: [linux-lvm] [PATCH 10/10] man: document --node option to lvchange



19.03.2013 20:16, David Teigland wrote:
> On Tue, Mar 19, 2013 at 07:52:14PM +0300, Vladislav Bogdanov wrote:
>> And, do you have any estimations, how long may it take to have you ideas
>> ready for production use?
> 
> It'll be quite a while (and the new locking scheme I'm working on will not
> include remote command execution.)
> 
>> Also, as you're not satisfied with this implementation, what alternative
>> way do you see? (calling ssh from libvirt or LVM API is not a good idea
>> at all I think)
> 
> Apart from using ovirt/rhev, I'd try one of the following behind the
> libvirt locking api: sanlock, dlm, file locks on nfs, file locks on gfs2.

Unfortunately none of these solve the main thing I need: Allow LVM
snapshots without breaking live VM migration :(

Cluster-wide snapshots (with shared lock) would solve this, but I do not
expect to see this implemented soon.


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