[linux-lvm] Disk Partitioning tools, GUI preferably- best for LVM Logical Volume Management ; jor
Bryn M. Reeves
bmr at redhat.com
Mon Jul 26 14:04:06 UTC 2010
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On 07/26/2010 02:59 PM, Stuart D. Gathman wrote:
> 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" ]
Hmm, that's kinda neat. I think when I was using Xen routinely the disk=
syntax was limited to associating a backing store with a whole-disk xvda
device.
> # 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
Understandable but I can't help but wondering what happens if you try? :)
Does it return zeros or just error out?
Regards,
Bryn.
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