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[Xen-devel] VBD extents

To: xen-devel@xxxxxxxxxxxxxxxxxxxxx
From: Eric Tessler <maiden1134@xxxxxxxxx>
Date: Tue, 18 Jan 2005 18:24:10 -0800 (PST)
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List-id: List for Xen developers <xen-devel.lists.sourceforge.net>

Can anyone tell me what exactly the VBD extents are used for in the XEN back-end block device driver? It almost looks like each virtual disk is made up of multiple physical drives if I read the code correctly (for each VBD grow message received by blkback, it opens a device and retreives various info such as its size).

Thanks,

Eric

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