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Re: [Linux-cluster] Minimum requirements for clvm only?



Patrick can correct me if I'm wrong, but you don't need clvmd at all. You could 'tag' your volume groups with the machine name. No-one would be able to manipulate those volume groups except the machine whose tag matches. If it is a virtual machine, it doesn't matter where it goes, it will still be able to manipulate the volume group with the appropriate tag.

This adds a little complexity to the lvm.conf file - so it's really a trade-off in terms of where you put your effort (better understanding of lesser-used features of LVM vs. coming up to speed on cluster infrastructure).

 brassow

On Nov 17, 2006, at 1:54 PM, Nate Carlson wrote:

Hey all,

I'm building a new system with shared FC storage primarily to allow Xen virtual machines to be migrated between host systems. I'd like to be able to use LVM or some similar system that allows me to name my own volumes, but don't need shared storage, rgmanager, etc. What are the minimum requirements to just get clvm working? I'm assuming I don't need fence devices and such for this, as those are primarily used to ensure that a system is writing to a filesystem when it's not supposed to? Also, are there any alternatives to clvm that may be better suited for this case?

Thanks!

----------------------------------------------------------------------- - | nate carlson | natecars natecarlson com | http://www.natecarlson.com | | depriving some poor village of its idiot since 1981 | ----------------------------------------------------------------------- -

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