回复: busctl call "led method" failed

[周 远清]

Hi Vishwa

    I copied your command and tested it again, the problem is still the same.

    I looked at the phosphor-led-manager-master document and saw that the sys/class/leds directory needs to generate the following files.

 ls -l /sys/class/leds/fault/
total 0
-rw-r--r--    1 root     root          4096 Jun 21 20:04 brightness
lrwxrwxrwx    1 root     root             0 Jun 21 20:29 device -> ../../../leds
-r--r--r--    1 root     root          4096 Jun 21 20:29 max_brightness
drwxr-xr-x    2 root     root             0 Jun 21 20:29 power
lrwxrwxrwx    1 root     root             0 Jun 21 20:04 subsystem -> ../../../../../class/leds
-rw-r--r--    1 root     root          4096 Jun 21 20:04 trigger
-rw-r--r--    1 root     root          4096 Jun 21 20:04 uevent

     However, /sys/class/leds is empty on my board. I am not sure if it will affect this problem.

root at starlake::/# ls /sys/class/leds/
root at starlake::/#

root at starlake:/sys/firmware/devicetree/base/leds# ls
compatible  fault       identify    name        power
root at starlake:/sys/firmware/devicetree/base/leds# cd fault/
root at starlake:/sys/firmware/devicetree/base/leds/fault# ls
gpios  name
root at starlake:/sys/firmware/devicetree/base/leds/fault#



________________________________
发件人: Vishwanatha Subbanna <vishwa at linux.vnet.ibm.com>
发送时间: 2020年7月13日 17:02
收件人: 周 远清 <zhouyuanqing8 at outlook.com>
抄送: openbmc at lists.ozlabs.org <openbmc at lists.ozlabs.org>; uperic at 163.com <uperic at 163.com>
主题: Re: busctl call "led method" failed

Hi harley,

I am able to see it working. Please check if there was any typo etc.. journalctl would have the info

root at rain4bmc:~# busctl --verbose  call xyz.openbmc_project.LED.GroupManager /xyz/openbmc_project/led/groups/power_on org.freedesktop.DBus.Properties Get ss xyz.openbmc_project.Led.Group Asserted
MESSAGE "v" {
        VARIANT "b" {
                BOOLEAN false;
        };
};

root at rain4bmc:~# busctl --verbose  call xyz.openbmc_project.LED.GroupManager /xyz/openbmc_project/led/groups/power_on org.freedesktop.DBus.Properties Set ssv xyz.openbmc_project.Led.Group Asserted b true

root at rain4bmc:~# busctl --verbose  call xyz.openbmc_project.LED.GroupManager /xyz/openbmc_project/led/groups/power_on org.freedesktop.DBus.Properties Get ss xyz.openbmc_project.Led.Group Asserted
MESSAGE "v" {
        VARIANT "b" {
                BOOLEAN true;
        };
};

root at rain4bmc:~# busctl --verbose  call xyz.openbmc_project.LED.GroupManager /xyz/openbmc_project/led/groups/power_on org.freedesktop.DBus.Properties Set ssv xyz.openbmc_project.Led.Group Asserted b false

root at rain4bmc:~# busctl --verbose  call xyz.openbmc_project.LED.GroupManager /xyz/openbmc_project/led/groups/power_on org.freedesktop.DBus.Properties Get ss xyz.openbmc_project.Led.Group Asserted
MESSAGE "v" {
        VARIANT "b" {
                BOOLEAN false;
        };
};

root at rain4bmc:~#

Alternatively, you could use bustle set-property

busctl set-property xyz.openbmc_project.LED.GroupManager /xyz/openbmc_project/led/groups/power_on xyz.openbmc_project.Led.Group Asserted b true

busctl get-property xyz.openbmc_project.LED.GroupManager /xyz/openbmc_project/led/groups/power_on xyz.openbmc_project.Led.Group Asserted

Thanks,
!! Vishwa !!


On 13-Jul-2020, at 2:07 PM, 周 远清 <zhouyuanqing8 at outlook.com<mailto:zhouyuanqing8 at outlook.com>> wrote:

Hello everyone，

         There are the following calls to busctl, it is normal to use the get command, but the set command prompts "Call failed: path or object not found", and no other log information is output through the journalctl command. Please take a look at how to locate this problem. Thank you！


 ~# busctl --verbose  call xyz.openbmc_project.LED.GroupManager /xyz/openbmc_project/led/groups/power_on org.freedesktop.DBus.Properties Get ss xyz.openbmc_project.Led.Group Asserted
MESSAGE "v" {
        VARIANT "b" {
                BOOLEAN false;
        };
};

 ~# busctl --verbose  call xyz.openbmc_project.LED.GroupManager /xyz/openbmc_project/led/groups/power_on org.freedesktop.DBus.Properties Set ssv xyz.openbmc_project.Led.Group Asserted b true
Call failed: path or object not found

harley

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