[Xen-devel] Re: Getting xen to recognise large disks

[Robin Bowes <robin-lists@xxxxxxxxxxxxxx>]

Robin Bowes wrote:
> I'd love to post a patch, but I'm afraid I'm not a coder.
> 
> I'm downloading the SRPMS as I type and I'll give it a go, but it might
> be an idea if someone with more coding skills fixes this.
> 
> I'll post an update when I've had a go.

OK, I've made the change to blkfront.c but there is no xenbus_printf in
blkback.c so I didn't make that change. (I'm using xen-3.0.3 from the
FC6 SRPM)

I've rebuilt the xen RPM with this patch:

diff -ur
xen-3.0.3-rc3/linux-2.6-xen-sparse/drivers/xen/blkfront/blkfront.c
xen-3.0.3-rc3.patched/linux-2.6-xen-sp
arse/drivers/xen/blkfront/blkfront.c
--- xen-3.0.3-rc3/linux-2.6-xen-sparse/drivers/xen/blkfront/blkfront.c
2006-10-10 15:23:43.000000000 +0100
+++
xen-3.0.3-rc3.patched/linux-2.6-xen-sparse/drivers/xen/blkfront/blkfront.c
 2006-11-21 01:10:54.000000000 +000
0
@@ -294,7 +294,8 @@
  */
 static void connect(struct blkfront_info *info)
 {
-       unsigned long sectors, sector_size;
+       blkif_sector_r sectors;
+    unsigned long sector_size;
        unsigned int binfo;
        int err;

@@ -305,7 +306,7 @@
        DPRINTK("blkfront.c:connect:%s.\n", info->xbdev->otherend);

        err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
-                           "sectors", "%lu", &sectors,
+                           "sectors", "%llu", &sectors,
                            "info", "%u", &binfo,
                            "sector-size", "%lu", &sector_size,
                            NULL);


I installed the resulting RPMs (xen and xen-libs) and rebooted the dom0
host.

However, the xvdb device still only shows up like this:

major minor  #blocks  name
 202    16  782819328 xvdb

Did I not do it right?

R.


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