New API: pvresize-size to allow shrinking PVs (RHBZ#585222).

[libguestfs.git] / daemon / lvm.c

diff --git a/daemon/lvm.c b/daemon/lvm.c
index 18d6519..70c3c90 100644 (file)
--- a/daemon/lvm.c
+++ b/daemon/lvm.c
@@ -20,6 +20,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
 
 #include <stdio.h>
 #include <stdlib.h>

+#include <inttypes.h>

 #include <string.h>
 #include <unistd.h>
 
 #include <string.h>
 #include <unistd.h>
 


@@ -453,6 +454,29 @@ do_pvresize (const char *device)
 }
 
 int
 }
 
 int

+do_pvresize_size (const char *device, int64_t size)
+{
+  char *err;
+  int r;
+
+  char buf[32];
+  snprintf (buf, sizeof buf, "%" PRIi64 "b", size);
+
+  r = command (NULL, &err,
+               "lvm", "pvresize",
+               "--setphysicalvolumesize", buf,
+               device, NULL);
+  if (r == -1) {
+    reply_with_error ("%s: %s", device, err);
+    free (err);
+    return -1;
+  }
+
+  free (err);
+  return 0;
+}
+
+int

 do_vg_activate (int activate, char *const *volgroups)
 {
   char *err;
 do_vg_activate (int activate, char *const *volgroups)
 {
   char *err;