xen: wait up to 5 minutes for device connetion
Increases the device timeout from 10s to 5 minutes, giving the user a
visual indication during that time in case there are problems. The patch
is a backport of changesets 144 and 150 in the Xenbits tree.
Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c
index 9246a8c..649fcdf 100644
--- a/drivers/xen/xenbus/xenbus_probe.c
+++ b/drivers/xen/xenbus/xenbus_probe.c
@@ -901,7 +901,7 @@
static int ready_to_wait_for_devices;
/*
- * On a 10 second timeout, wait for all devices currently configured. We need
+ * On a 5-minute timeout, wait for all devices currently configured. We need
* to do this to guarantee that the filesystems and / or network devices
* needed for boot are available, before we can allow the boot to proceed.
*
@@ -916,18 +916,30 @@
*/
static void wait_for_devices(struct xenbus_driver *xendrv)
{
- unsigned long timeout = jiffies + 10*HZ;
+ unsigned long start = jiffies;
struct device_driver *drv = xendrv ? &xendrv->driver : NULL;
+ unsigned int seconds_waited = 0;
if (!ready_to_wait_for_devices || !xen_domain())
return;
while (exists_connecting_device(drv)) {
- if (time_after(jiffies, timeout))
- break;
+ if (time_after(jiffies, start + (seconds_waited+5)*HZ)) {
+ if (!seconds_waited)
+ printk(KERN_WARNING "XENBUS: Waiting for "
+ "devices to initialise: ");
+ seconds_waited += 5;
+ printk("%us...", 300 - seconds_waited);
+ if (seconds_waited == 300)
+ break;
+ }
+
schedule_timeout_interruptible(HZ/10);
}
+ if (seconds_waited)
+ printk("\n");
+
bus_for_each_dev(&xenbus_frontend.bus, NULL, drv,
print_device_status);
}