ceph-disk-prepare: poke kernel into refreshing partition tables

Prod the kernel to refresh the partition table after we create one.  The
partprobe program is packaged with parted, which we already use, so this
introduces no new dependency.

Signed-off-by: Sage Weil <sage@inktank.com>
(cherry picked from commit 402e1f5319a52c309eca936081fddede1f107268)

diff --git a/src/ceph-disk-prepare b/src/ceph-disk-prepare
index d8e59eac4ccd98d98a353287ffc9cb022a0fdfcd..e5c4bdb9050b35ffbe13c1ed87ddaee32c8e6f6b 100755 (executable)
--- a/src/ceph-disk-prepare
+++ b/src/ceph-disk-prepare
@@ -337,6 +337,13 @@ def prepare(
                     journal,
                     ],
                 )
+            subprocess.check_call(
+                args=[
+                    # also make sure the kernel refreshes the new table
+                    'partprobe',
+                    journal,
+                    ],
+                )
         except subprocess.CalledProcessError as e:
             raise PrepareError(e)
 
@@ -354,6 +361,13 @@ def prepare(
                 disk,
                 ],
             )
+        subprocess.check_call(
+            args=[
+                # also make sure the kernel refreshes the new table
+                'partprobe',
+                disk,
+                ],
+            )
     except subprocess.CalledProcessError as e:
         raise PrepareError(e)