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[warm/fast-reboot] Backup logs from tmpfs to disk during fast/warm shutdown #2714

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Mar 6, 2023
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[warm/fast-reboot] Backup logs from tmpfs to disk during fast/warm shutdown #2714

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[warm/fast-reboot] Backup logs from tmpfs to disk during fast/warm sh…
vaibhavhd Mar 3, 2023
e1b449b
Use grep -c to suppress the output to a single count
vaibhavhd Mar 3, 2023
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11 changes: 11 additions & 0 deletions scripts/fast-reboot
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Original file line number Diff line number Diff line change
Expand Up @@ -806,6 +806,17 @@ fi

# Reboot: explicitly call Linux native reboot under sbin
debug "Rebooting with ${REBOOT_METHOD} to ${NEXT_SONIC_IMAGE} ..."

LOGS_ON_TMPFS=0
df --output=fstype /var/log* | grep -c 'tmpfs' || LOGS_ON_TMPFS=$?
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if [[ LOGS_ON_TMPFS -eq 0 ]]; then
debug "Backup shutdown logs to /host/logs_before_reboot"
mkdir -p /host/logs_before_reboot || /bin/true
# maxdepth 2: find files within 2 nested directories (eg. /var/log/ and /var/log/swss/)
# mmin 30: find files written in past 30 minutes
find /var/log -maxdepth 2 -mmin -30 -type f | xargs -I {} cp {} /host/logs_before_reboot/ || /bin/true
fi

exec ${REBOOT_METHOD}

# Should never reach here
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