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[201811] Add the hw reboot cause if it happened during software reboot (#11752)

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Why I did it
Add the hardware reboot cause when the previous software reboot failed

How I did it
Check both hardware reboot cause and software reboot cause.
Add the hardware reboot as actual reboot cause
if any hardware reboot cause is available for any software reboot.

How to verify it
Perform reboots and verify the reboot-cause
This commit is contained in:
Sujin Kang 2022-08-24 08:36:09 -07:00 committed by GitHub
parent 9b8f505566
commit 0bd40857d1
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 25 additions and 10 deletions
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35
files/image_config/process-reboot-cause/process-reboot-cause
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@ -37,6 +37,7 @@ REBOOT_TYPE_KEXEC_PATTERN_WARM = ".*SONIC_BOOT_TYPE=(warm|fastfast).*"
REBOOT_TYPE_KEXEC_PATTERN_FAST = ".*SONIC_BOOT_TYPE=(fast|fast-reboot).*"
REBOOT_CAUSE_UNKNOWN = "Unknown"
REBOOT_CAUSE_NON_HARDWARE = "Non-Hardware"
# ========================== Syslog wrappers ==========================
@ -119,7 +120,7 @@ def find_hardware_reboot_cause():
hardware_reboot_cause_major, hardware_reboot_cause_minor = chassis.get_reboot_cause()
if hardware_reboot_cause_major == chassis.REBOOT_CAUSE_NON_HARDWARE:
if hardware_reboot_cause_major == REBOOT_CAUSE_NON_HARDWARE:
# The reboot was not caused by hardware. If there is a REBOOT_CAUSE_FILE, it will
# contain any software-related reboot info. We will use it as the previous cause.
pass
@ -168,16 +169,30 @@ def main():
software_reboot_cause = find_software_reboot_cause()
# The main decision logic of the reboot cause:
# If there is a reboot cause indicated by /proc/cmdline, it should be warmreboot/fastreboot
# the software_reboot_cause which is the content of /hosts/reboot-cause/reboot-cause.txt
# will be treated as the reboot cause
# Elif there is a reboot cause indicated by platform API,
# the hardware_reboot_cause will be treated as the reboot cause
# If there is a valid hardware reboot cause indicated by platform API,
# check the software reboot cause to add additional rebot cause.
# If there is a reboot cause indicated by /proc/cmdline, and/or warmreboot/fastreboot/softreboot
# the software_reboot_cause which is the content of /hosts/reboot-cause/reboot-cause.txt
# will be treated as the additional reboot cause
# Elif there is a cmdline reboot cause,
# the software_reboot_cause will be treated as the reboot cause if it's not unknown
# otherwise, the cmdline_reboot_cause will be treated as the reboot cause if it's not none
# Else the software_reboot_cause will be treated as the reboot cause
if proc_cmdline_reboot_cause is not None:
previous_reboot_cause = software_reboot_cause
elif hardware_reboot_cause is not None:
previous_reboot_cause = hardware_reboot_cause
if hardware_reboot_cause is not None:
# Check if any software reboot was issued before this hardware reboot happened
if REBOOT_CAUSE_UNKNOWN not in software_reboot_cause:
# Add the hardware_reboot_cause as actual reboot cause
previous_reboot_cause = software_reboot_cause + " Actual reboot cause : " + hardware_reboot_cause
elif proc_cmdline_reboot_cause is not None:
previous_reboot_cause = proc_cmdline_reboot_cause + " Actual reboot cause : " + hardware_reboot_cause
else:
previous_reboot_cause = hardware_reboot_cause
elif proc_cmdline_reboot_cause is not None:
if REBOOT_CAUSE_UNKNOWN not in software_reboot_cause:
# Get the reboot cause from REBOOT_CAUSE_FILE
previous_reboot_cause = software_reboot_cause
else:
previous_reboot_cause = proc_cmdline_reboot_cause
else:
previous_reboot_cause = software_reboot_cause