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Fix Xen blk device naming (rhbz 729340)

This commit is contained in:
Dave Jones 2011-08-11 12:00:03 -04:00
parent 408089c858
commit d1998c6a8a
2 changed files with 36 additions and 1 deletions
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7
kernel.spec
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@ -612,7 +612,8 @@ Patch800: linux-2.6-crash-driver.patch
# crypto/
# virt + ksm patches
Patch1555: fix_xen_guest_on_old_EC2.patch
Patch1500: fix_xen_guest_on_old_EC2.patch
Patch1501: xen-blkfront-name-adjust.patch
# DRM
@ -1174,6 +1175,7 @@ ApplyPatch linux-2.6-e1000-ich9-montevina.patch
# Assorted Virt Fixes
ApplyPatch fix_xen_guest_on_old_EC2.patch
ApplyPatch xen-blkfront-name-adjust.patch
# DRM core
@ -1827,6 +1829,9 @@ fi
# and build.
%changelog
* Thu Aug 11 2011 Dave Jones <davej@redhat.com>
- Fix Xen blk device naming (rhbz 729340)
* Tue Aug 09 2011 Josh Boyer <jwboyer@redhat.com>
- Add Makefile.config and ARM config changes from David Marlin

30
xen-blkfront-name-adjust.patch Normal file
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@ -0,0 +1,30 @@
commit 196cfe2ae8fcdc03b3c7d627e7dfe8c0ce7229f9
Author: Stefan Bader <stefan.bader@canonical.com>
Date: Thu Jul 14 15:30:22 2011 +0200
xen-blkfront: Drop name and minor adjustments for emulated scsi devices
These were intended to avoid the namespace clash when representing
emulated IDE and SCSI devices. However that seems to confuse users
more than expected (a disk defined as sda becomes xvde).
So for now go back to the scheme which does no adjustments. This
will break when mixing IDE and SCSI names in the configuration of
guests but should be by now expected.
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
--- linux-2.6.39.noarch/drivers/block/xen-blkfront.c~ 2011-08-11 11:54:25.656150889 -0400
+++ linux-2.6.39.noarch/drivers/block/xen-blkfront.c 2011-08-11 11:54:54.573046334 -0400
@@ -123,8 +123,8 @@ static DEFINE_SPINLOCK(minor_lock);
#define BLKIF_MINOR_EXT(dev) ((dev)&(~EXTENDED))
#define EMULATED_HD_DISK_MINOR_OFFSET (0)
#define EMULATED_HD_DISK_NAME_OFFSET (EMULATED_HD_DISK_MINOR_OFFSET / 256)
-#define EMULATED_SD_DISK_MINOR_OFFSET (EMULATED_HD_DISK_MINOR_OFFSET + (4 * 16))
-#define EMULATED_SD_DISK_NAME_OFFSET (EMULATED_HD_DISK_NAME_OFFSET + 4)
+#define EMULATED_SD_DISK_MINOR_OFFSET (0)
+#define EMULATED_SD_DISK_NAME_OFFSET (EMULATED_SD_DISK_MINOR_OFFSET / 256)
#define DEV_NAME "xvd" /* name in /dev */