Bash check for Offlne (Onln=Online|Offln=Offline) disk using 'storecli' and 'awk' on MegaRAID controller cards.

disk_check.sh

#!/usr/bin/env bash
#
# disk_check
#
# Emit email to: '' if failed disk(s) found on array
#
# Author: M. Krinitz <mjk235 [at] nyu [dot] edu>
# Date: 22-Feb-2022
# License: MIT
megacli="/opt/MegaRAID/MegaCli/MegaCli64"
date="$(date +'%b %d %Y %X')"
host="$(hostname)"
recipients=""
log_file="/var/log/disk_check.log"

# Check if call to megacli succeeds
if ! $megacli -showsummary -aall >/dev/null 2>&1; then
    printf "%s\n" "$(date +"%Y-%m-%d %H:%M:%S") - Error: MegaCli failed to execute." >&2
    exit 1
fi

# Parse megacli call & emit email if failure detected
if $megacli -showsummary -aall | grep -q Failed; then
    printf "%s\n" "Failed disk(s) found on: $host@$date." "Replace the blinking red disk(s) in the front and/or back of the array." |
    mail -s "Failed Disk@$host" "$recipients"
    printf "%s\n" "$(date +"%Y-%m-%d %H:%M:%S") - Disk check on $host. Failed: Yes" >> "$log_file"
else
    printf "%s\n" "No failed disk(s) found on: $host@$date. Exiting."
    printf "%s\n" "$(date +"%Y-%m-%d %H:%M:%S") - Disk check on $host. Failed: No" >> "$log_file"
fi