On Tue, Aug 17, 2010 at 10:13:59AM +0800, Jinxin Zheng wrote:
On 08/16/2010 09:06 PM, Richard W.M. Jones wrote:
>On Mon, Aug 16, 2010 at 07:21:12PM +0800, Jin Xin Zheng wrote:
>>In fact when I saw this the first thing came up to my head was that our
>>modified source for doing gcov -- we could collect the .gcda files in
>>the build directory after libguestfs was invoked. But the guestfsd which
>>runs inside the appliance produces the .gcda files in the temp ramfs.
>I guess it writes it into / (ie. guestfsd's current directory which is
>pretty much always root)?
>
Yes you are right. gcov does not care about the $pwd, it just outputs
.gcda files under the directory where I built the source, e.g.
/home/build/rpmbuild/BUILD/libguestfs-1.2.7/daemon
In order to download these files correctly, we have to use the debug
command to access the root filesystem, although building the source in a
directory under /sysroot may make things easier.
It looks like we'll be using a writable root device anyway, so
problem solved ...
Rich.
--
Richard Jones, Virtualization Group, Red Hat
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