On 01/26/15 at 05:41pm, Dave Young wrote:
In case one want to use usb serial console, we need to pack the usb
serial
driver into kdump initramfs so that one can see the console output on the usb
console.
I only handled ttyUSB0, this is like a hard code, but it should be enough for
most cases. Also only install the driver for the ttyUSB0 device.
Tested with adding "console=ttyUSB0" in 2nd kernel commandline.
Tested latest F22 kernel, there's CONFIG_USB_SERIAL_CONSOLE=y, kdump work ok.
Signed-off-by: Dave Young <dyoung(a)redhat.com>
---
dracut-module-setup.sh | 8 ++++++++
1 file changed, 8 insertions(+)
--- kexec-tools.orig/dracut-module-setup.sh
+++ kexec-tools/dracut-module-setup.sh
@@ -626,4 +626,12 @@ installkernel() {
[ "$wdt" = "iTCO_wdt" ] && instmods lpc_ich
instmods $wdt
fi
Hi Vivek,
I remember you raised this issue. Could you ack this patch if it's OK to
you? Then I can merge it.
Thanks
Baoquan
+
+ if [ -c /dev/ttyUSB0 ]; then
+ _majmin=$(get_maj_min /dev/ttyUSB0)
+
+ _driver=$(readlink /sys/dev/char/$_majmin/device/driver)
+ _driver=$(basename $_driver)
+ instmods $_driver
+ fi
}
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