[Libguestfs] [PATCH] btrfs: fix parsing of output of 'btrfs qgroup show' (RHBZ#1188553)

[Hu Tao]

'btrfs qgroup show' used to output bytes in raw, but in
btrfs-progs v3.18.2 it outputs bytes with suffix KiB, MiB
or like by default, which causes error when parsing the output.

Fix it by adding '--raw' to let 'btrfs qgroup show' output raw numbers
always.

Signed-off-by: Hu Tao <hutao at cn.fujitsu.com>
---
 daemon/btrfs.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/daemon/btrfs.c b/daemon/btrfs.c
index 5cab52a..402b7de 100644
--- a/daemon/btrfs.c
+++ b/daemon/btrfs.c
@@ -1231,6 +1231,7 @@ do_btrfs_qgroup_show (const char *path)
   ADD_ARG (argv, i, str_btrfs);
   ADD_ARG (argv, i, "qgroup");
   ADD_ARG (argv, i, "show");
+  ADD_ARG (argv, i, "--raw");
   ADD_ARG (argv, i, path_buf);
   ADD_ARG (argv, i, NULL);
 
@@ -1240,6 +1241,9 @@ do_btrfs_qgroup_show (const char *path)
     return NULL;
   }
 
+  if (verbose)
+    fprintf (stderr, "output of 'btrfs qgroup show %s' is:\n%s\n", path_buf, out);
+
   lines = split_lines (out);
   if (!lines)
     return NULL;
-- 
2.1.0