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[Xen-devel] vbd resize

I'm trying to add vbd resize to GPLPV, but it doesn't seem to work:

xm block-attach w2k3test32 phy:/dev/vg-xen/virt-test-0 hdb w

xenstore-read /local/domain/0/backend/vbd/377/832/sectors

lvextend --size=+1M /dev/vg-xen/virt-test-0

xenstore-read /local/domain/0/backend/vbd/377/832/sectors

The xenstore backend isn't updated to reflect the new size of the device... a 
strings | grep size of xen-blkback.ko module says:
<6>xen-blkback:VBD Resize: Domid: %d, Device: (%d, %d)
<6>xen-blkback:VBD Resize: new size %llu
<4>xen-blkback:Error writing new size

So the code is definitely there, it's just not noticing that the device has 
been resize.

Any suggestions?



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