[Xen-changelog] [xen-unstable] libxl: log failure from libxl__blktap_devpath in libxl_device_disk_add

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Ian Campbell <ian.campbell@xxxxxxxxxx>
# Date 1336483471 -3600
# Node ID deee8230f784967548bb5785d78d371afedc9f63
# Parent  fd2a63f58481c495dce41584e289a64e1bc04efc
libxl: log failure from libxl__blktap_devpath in libxl_device_disk_add

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Committed-by: Ian Jackson <ian.jackson.citrix.com>
Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
---


diff -r fd2a63f58481 -r deee8230f784 tools/libxl/libxl.c
--- a/tools/libxl/libxl.c       Thu May 10 12:19:15 2012 +0100
+++ b/tools/libxl/libxl.c       Tue May 08 14:24:31 2012 +0100
@@ -1351,6 +1351,8 @@ int libxl_device_disk_add(libxl_ctx *ctx
         case LIBXL_DISK_BACKEND_TAP:
             dev = libxl__blktap_devpath(gc, disk->pdev_path, disk->format);
             if (!dev) {
+                LOG(ERROR, "failed to get blktap devpath for %p\n",
+                    disk->pdev_path);
                 rc = ERROR_FAIL;
                 goto out_free;
             }

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