More qemu debugging

1 files changed, 16 insertions, 3 deletions

diff --git a/development/qemu-debugging.mdwn b/development/qemu-debugging.mdwn
index 44a8a7c..ed30a17 100644
--- a/development/qemu-debugging.mdwn
+++ b/development/qemu-debugging.mdwn
@@ -14,14 +14,20 @@ output goes to /var/log/libvirt/qemu/<vm>.log by default
             <target dir='ltstest'/>
         </filesystem>
 
-*mapped* is important. It uses extended attributes so it needs user_xattr on the host filesystem.
+*mapped* is important. It uses extended attributes so the filesystem that
+needs to be mounted with *user_xattr* on the host filesystem and the folder
+needs to be writeable by qemu:
 
-Guests fstab:
+        mount -o remount,user_xattr /cache/ltstest
+        chown libvirt-qemu /cache/ltstest
+
+The Guests fstab then uses:
 
     ltstest /ltstest 9p   trans=virtio,version=9p2000.L,rw 0 0
 
-Do
+After mounting you can write from the guest to the hosts fileystem:
 
+    mount /ltstest
     cd /ltstest && touch a
 
 results on the host as extended attributes
@@ -61,3 +67,10 @@ via QMP monitor:
 * List all devices:
 
         qemu-system-x86_64 -device ?
+
+* Enabling the monitor on raw qemu
+
+        $ qemu-system-i386 -qmp tcp:localhost:4444,server,nowait
+		$ telnet localhost 4444
+		{ "execute": "qmp_capabilities" }
+		{"execute": "commands"}