X-Git-Url: http://git.annexia.org/?p=libguestfs.git;a=blobdiff_plain;f=perl%2Flib%2FSys%2FGuestfs.pm;h=cd26bedce14d0436f33d1f809483a21a9eaf1385;hp=083a0172cc341b1ef0484340208e4b50008a8d44;hb=896079e29b4d49c6c18ac3316a94bfbe2f307648;hpb=0884d8bbae6d76a603ec1385ada2938f88981c5c

diff --git a/perl/lib/Sys/Guestfs.pm b/perl/lib/Sys/Guestfs.pm
index 083a017..cd26bed 100644
--- a/perl/lib/Sys/Guestfs.pm
+++ b/perl/lib/Sys/Guestfs.pm
@@ -115,7 +115,8 @@ for whatever operations you want to perform (ie. read access if you
 just want to read the image or write access if you want to modify the
 image).
 
-This is equivalent to the qemu parameter C<-drive file=filename,cache=off>.
+This is equivalent to the qemu parameter
+C<-drive file=filename,cache=off,if=virtio>.
 
 Note that this call checks for the existence of C<filename>.  This
 stops you from specifying other types of drive which are supported
@@ -134,7 +135,7 @@ handle is closed.  We don't currently have any method to enable
 changes to be committed, although qemu can support this.
 
 This is equivalent to the qemu parameter
-C<-drive file=filename,snapshot=on>.
+C<-drive file=filename,snapshot=on,if=virtio>.
 
 Note that this call checks for the existence of C<filename>.  This
 stops you from specifying other types of drive which are supported
@@ -1480,6 +1481,10 @@ with permissions like "-rw-r--r--" or "-rwxr-xr-x", and
 C<002> which creates new files with permissions like
 "-rw-rw-r--" or "-rwxrwxr-x".
 
+The default umask is C<022>.  This is important because it
+means that directories and device nodes will be created with
+C<0644> or C<0755> mode even if you specify C<0777>.
+
 See also L<umask(2)>, C<$h-E<gt>mknod>, C<$h-E<gt>mkdir>.
 
 This call returns the previous umask.