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xen-devel
Re: Disk naming (Was Re: [Xen-devel] [PATCH] Guest boot loadersupport [1
Adam Heath wrote:
On Thu, 14 Apr 2005, Gerd Knorr wrote:
I think we should have our own xd virtual block devices for xen and
use them by default. It's cleaner, and probably also has less
problems when using virtual disks and iSCSI at the same time ;)
Using hd/sd instead probably is a useful option in some cases, I
wouldn't drop that altogether, but only use that if the user
explicitly asks for it.
Or, implement a xen scsi host driver, that acts like a real scsi host
controller, but instead imports virtual blocks. This seems like the best of
both worlds.
Note, this is not a overlay system like is done currently, nor is it a block
driver.
There may already be something like this, the IBM virtual scsi
server/client drivers in mainline kernel (used for para-virtualized
POWER5 systems). Might be worth looking at and modifying a bit to fit
Xen's inter domain communication model.
-Andrew
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