[Xen-devel] [PATCH] libxl: stat the path for all non-qdisk backends (including unknown)

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

The commit a8a1f236a296 "libxl: Only call stat() when adding a disk if we
expect a device to exist." changed things to only stat the file when the phy
backend was explicitly requested. This broke the case where we are probing and
would normally be able to decide on the phy option.

Since the intention of that commit was to allow for qdisk backends with no
explicit file in dom0 (i.e. network remote backend such as ceph) the lowest
impact fix appears to be to make that explicit. This should probably be
revisited to rationalize the probing.

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Cc: dave.scott@xxxxxxxxxx
Cc: george.dunlap@xxxxxxxxxx
Cc: roger.pau@xxxxxxxxxx
Cc: ian.jackson@xxxxxxxxxx
---
 tools/libxl/libxl_device.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/tools/libxl/libxl_device.c b/tools/libxl/libxl_device.c
index eb60fd5..b01d109 100644
--- a/tools/libxl/libxl_device.c
+++ b/tools/libxl/libxl_device.c
@@ -236,7 +236,7 @@ int libxl__device_disk_set_backend(libxl__gc *gc, 
libxl_device_disk *disk) {
             return ERROR_INVAL;
         }
         memset(&a.stab, 0, sizeof(a.stab));
-    } else if (disk->backend == LIBXL_DISK_BACKEND_PHY &&
+    } else if (disk->backend != LIBXL_DISK_BACKEND_QDISK &&
                disk->backend_domid == LIBXL_TOOLSTACK_DOMID &&
                !disk->script) {
         if (stat(disk->pdev_path, &a.stab)) {
-- 
1.7.2.5


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel