Ian Campbell
2009-Mar-24 17:44 UTC
[Xen-devel] [PATCH] xen: warn if block device major is not xvd''s major
Old style -xen kernels support taking over the hd and sd major numbers
so warn users who reuse old configurations since the minor number
mapping of the majors differs, so hdd->xvde which is at least a bit
more confusing than xvdd.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
---
drivers/block/xen-blkfront.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 8f90508..6c2a79f 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -406,6 +406,8 @@ static int xlvbd_alloc_gendisk(blkif_sector_t capacity,
}
if (!VDEV_IS_EXTENDED(info->vdevice)) {
+ if (BLKIF_MAJOR(info->vdevice) != XENVBD_MAJOR)
+ printk(KERN_INFO "major device != xvd* (202) not supported\n");
minor = BLKIF_MINOR(info->vdevice);
nr_parts = PARTS_PER_DISK;
} else {
--
1.5.6.5
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