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Re: [linux-lvm] Disk Partitioning tools, GUI preferably- best for LVM Logical Volume Management ; jor



On Mon, 26 Jul 2010, Bryn M. Reeves wrote:

> > Using Xen modified OSes, you don't need to partition the LVs.  The 
> > xen storage driver presents each mapped block device as a virtual
> > partition.
> 
> Not used Xen for a long time but that's good to know - iirc it did not
> behave like this the last time I used it (with xvda disks).

xen disk definition on dom0:

disk = [ "phy:/dev/rootvg/C5MAIL,xvda1,w",
         "phy:/dev/rootvg/M_SWAP,xvda2,w",
	 "phy:/dev/rootvg/MAIL,xvda3,w" ]

What guest OS running xen kernel sees:

# df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/xvda1            10165048   1554800   8190820  16% /
/dev/xvda3            83716784  48877780  30644700  62% /home
tmpfs                  1048664         0   1048664   0% /dev/shm

However, it doesn't go so far as to let you access the first sector
of /dev/xvda

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