update faq

Change-Id: I284710520f7d00fcd0f0978ff89313f14411d471
Signed-off-by: Gui Chen <gui.chen@intel.com>

1 files changed, 16 insertions, 4 deletions

diff --git a/doc/faq.rst b/doc/faq.rst
index aef97c3..314b4e4 100644
--- a/doc/faq.rst
+++ b/doc/faq.rst
@@ -5,20 +5,32 @@ Q: When creating an image, MIC shows "Error <creator>: URLGrabber error: http://
 
 A: Perhaps your network has some issues, or your proxy doesn't work. Try another proxy or find out the network issue.
 
-Q: MIC complains "Error <repo>: found 1 resolver problem, abort!"
+Q: MIC complains "ERROR: found 1 resolver problem, abort!"
 
-A: This is not an issue with MIC, but with the repo you used. Make sure the packages in the repo you used have proper dependencies.
+A: This is not an issue of MIC, it's caused by the repo you used. Make sure the packages in the repo you used have proper dependencies.
 
 Q: I used '-A i586' to create an i586 image, but it showed "nothing provided ....". What's wrong with it?
 
 A: Use '-A i686'. i586 is lower than i686, so many packages will be missing from the installation.
 
+Q: Error shows: "uninstallable providers: somepackageA"
+
+A: It's caused by the missing package in the repo. To find it out, modify the %packages section with only one item 'somepackageA' in kickstart file, then you can root cause what's the missing dependency.
+
 Q: MIC shows in the log: "file /usr/share/whatever conflicts between attempted installs of somepackageA and somepackageB"
 
 A: There are conflicts between some packages in the repo you used, but this is not an issue with MIC. Please make sure you are using a proper repo.
 
-Q: Error shows: Command 'modprobe' is not available in Fedora 17.
+Q: Error shows: Command 'modprobe' is not available.
+
+A: In some distributions, when you use sudo, the PATH variable will be changed and you will lose some important paths. Run 'export PATH=/sbin:$PATH' before running MIC.
+
+Q: MIC lost some packages which are specified in '--includepkgs'/'--excludepkgs'
+
+A: Assume you want to include/exclude some packages in one repo, you will use '--includepkgs'/'--excludepkgs' option in the according repo command line, but you should list these packages to %packages section too, otherwise they will not take any effect.
+
+Q: How does mic select packages? And how to set the priority of a repo?
 
-A: In Fedora 17, when you use sudo, the PATH variable will be changed and you will lose some important paths. Run 'export PATH=/sbin:$PATH' before running MIC.
+A: In general, mic will select a higher version if two or more available in all repos, if the version is the same, a higher release number is prefferred. But if you assign a priority to one repo, mic will prefer to select packages from the repo with higher priority, even in case a higher version is available in the repo with a lower priority. Actually the default priority for a repo is 99, the range of a repo priority is 1~99, the larger number has the lower priority. An example is given: 'repo --name=base --baseurl=http://whateverurl --prioirity=1'.