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 warning if disk(s) on RAID controller cards found to be in "Offln" state
# storcli reference: https://docs.broadcom.com/doc/12352476
# 
# Author: M. Krinitz <mjk235 [at] nyu [dot] edu>
# Date: 09-Aug-2024
# License: MIT
#
storcli="/opt/MegaRAID/storcli/storcli64"

date="$(date +'%b %d %Y %X')"
host="$(hostname)"

# awk output of storcli command: 
# Find line(s) containing: `DG Drive LIST :`
# then continue processing until lines containing: `Total Drive Count` are found
# If third column mathces `Offln`, exit and emit warning 

if $storcli /call/dall show all | awk '/DG Drive LIST :/,/Total Drive Count/ \
  { if ($3 == "Offln") exit 0 } END { exit 1 }'; then
  printf "%s\n" "Offline disk(s) found on: $host@$date." \
    "Replace the blinking red disk(s) in the front and/or back of the array." 
else
  printf "%s\n" "No offline disk(s) found on: $host@$date. Exiting."
fi