Re: [Xen-users] High availability and live migration with just LVM and hardware fencing

[John Madden <jmadden@xxxxxxxxxxx>]

> Did some further research in the meantime and so far the best reason I can 
> find for using cLVM, is the making changes to the volume groups: with cLVM 
> they seem to be "published" to all Xen hosts at once, while with LVM one needs 
> to reconnect to the volume group (probably causing weird things to the 
> guests).
Agreed, I wouldn't touch his setup without clvm being there.  It does 
other nice things like making sure each cluster member can see the block 
devices before allowing changes to LVM state, which is nice when you 
have to zone and mask dozens of disks.  cLVM is a must in my book.
John





--
John Madden
Sr UNIX Systems Engineer
Ivy Tech Community College of Indiana
jmadden@xxxxxxxxxxx

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