Hi, Dear all

    I have a question, and need your help. 

    I want to output some log message to "/var/log/libvirt/qemu/instance-xxxxxx" when guest kernel crashed, so I add following the code:

    >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

    static int

    qemuProcessHandleGuestPanic(qemuMonitorPtr mon ATTRIBUTE_UNUSED,

                                        virDomainObjPtr vm,

                                                                    void *opaque) { ......

    +    qemuDomainLogContextPtr logCtxt = NULL;

    +    if (!(logCtxt = qemuDomainLogContextNew(driver, vm, QEMU_DOMAIN_LOG_CONTEXT_MODE_START))){

    +        VIR_WARN("Unable to open domainlog");

    +        goto cleanup;

    +    }

        ......

    }

    <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

    But this code cannot get the logCtxt,   

    logCtxt = qemuDomainLogContextNew(driver, vm, QEMU_DOMAIN_LOG_CONTEXT_MODE_START)  always return NULL, so I CANNOT write message to log file.

    Really Need your help, Thanks!

    Thanks

    Feng