#!/bin/bash 
#
# /etc/rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

#############
# TODO BOOJUM - make sure to update /root/bin/getdrive-byids 1st, then /etc/rc.local, then /root/bin/sleepnow-safe
#############

/usr/bin/logger -i -s 'o Running etc/rc.local'

# hopefully enable sysrq; default is "176"
echo "1" > /proc/sys/kernel/sysrq

setterm -blank 0

# we dont want to swap much if at all possible
echo 1 > /proc/sys/vm/swappiness

# hopefully better multitasking I/O performance
echo 20 > /proc/sys/vm/dirty_ratio

# Try to keep at least 100MB of free RAM at all times
echo 100000 > /proc/sys/vm/min_free_kbytes

# Default 100 - try more aggressively to reclaim inodes, etc from cache
echo 160 > /proc/sys/vm/vfs_cache_pressure

#  echo 1 > /proc/sys/vm/overcommit_memory
# REF: https://forum.proxmox.com/threads/kvm-cannot-allocate-memory.13914/
# TODO enable if start getting "cannot allocate ram" errors

#  echo Y > /sys/module/kvm/parameters/ignore_msrs
# TODO enable if host starts crashing when trying to do too much in a vm, like loading 400 tabs in a browser
# REF: https://forum.proxmox.com/threads/win11-vm-opening-many-tabs-at-once-crashes-proxmox-host.140670/


/root/bin/topterm9 &

# xxx mac/apple specific fan control - set speed to cool down; macfanctld does the rest
[ -e /sys/devices/platform/applesmc.768/fan1_min ] && /root/bin/boojum/macfanstemps.sh &
#echo 3000 > /sys/devices/platform/applesmc.768/fan3_min
# also see ' sensors -f '


# xxx took out for imacdual 2019.0406
#chvt 1

# VMWARE FIX for slow guest << host Bridged networking 2006.0911
#ethtool -K eth0 tx off
#ethtool -K eth0 sg off
#ethtool -K eth0 tso off

# 2.5Gbit ether usb3
#modprobe r8152

# speed up gig ether
/root/bin/gig-ether--speedup &

# xxx 2024.0302- REF: https://pve.proxmox.com/wiki/Zram
#modprobe zram
#zramctl --size 1500MiB /dev/zram0
#mkswap /dev/zram0 
#swapon /dev/zram0 -p 10

modprobe zfs
zpool import -d /dev/disk/by-id -a -f 
#zfs mount -a  # xxx commented 2024.0314 / 2019.0412 to not mount vm zvols / Snapshots!

if [ `df -T|grep -c zfs` -gt 0 ]; then
  /root/bin/boojum/boojum-1week-snapshot.sh &

#[ `df -T|grep -c zredtera1` -gt 0 ] && 
#  /root/bin/pokedisk.sh &  # Keep poking firewire disks so they dont sleep too soon

# 2018.0819 FIX for writing ~150KB/sec to zfs /home
#cd /sys/module/zfs/parameters && echo 30 > zfs_txg_timeout 
#cd -

cd /sys/module/zfs/parameters #&& \
  tmpv=zfs_txg_timeout;         [ -e $tmpv ] && echo 20 > $tmpv

# 1,073,741,824 *4
#  tmpv=zfs_arc_max;             [ -e $tmpv ] && echo 4294967296 > $tmpv # limit zfs RAM usage
#  tmpv=zfs_arc_max;             [ -e $tmpv ] && echo 2147483648 > $tmpv # limit zfs RAM usage # if over 16GB RAM
#  tmpv=zfs_arc_max;             [ -e $tmpv ] && echo 1073741824 > $tmpv # limit zfs RAM usage

#  tmpv=zfs_arc_max;             [ -e $tmpv ] && echo 1573741824 > $tmpv # limit zfs RAM usage

# 4GB -- increased after RAM -> 32GB 2024.0324 (was 1.5GB for 16 on host)
#echo "$[4 * 1024*1024*1024]" >/sys/module/zfs/parameters/zfs_arc_max


#  tmpv=zfetch_max_distance;     [ -e $tmpv ] && echo 52428800 > $tmpv # prefetch 50MB - should speed up reads for VM resumes
# 52,428,800 # prefetch 50MB - should speed up reads for VM resumes
# REF: https://github.com/openzfs/zfs/wiki/ZFS-on-Linux-Module-Parameters#zfetch_max_distance
cd -

fi

#/root/bin/boojum/proxmox-mountall.sh &

source /root/bin/getdrive-byids

# I/O speedup and drive spindown
function setdrive () {
# arg1: drivename - arg2: hdparm setreadahead - arg3: spindown in minutes
	dnm=$1
	sra=$2
	slpmin=$3; slpact=0
	
# spindown NOTE:
# 120 (10 minutes)
# 240 = 20 min
# 241 (30 minutes)
# 242 (60 minutes)
# 243 (1 hours + 30 minutes)
# 245 (2 hours + 30 minutes)
	
# REF: http://tldp.org/LDP/abs/html/testbranch.html
	case "slpmin" in
    0 )   slpact=0;;
    10 )  slpact=120;;
    20 )  slpact=240;;
    30 )  slpact=241;;
    60 )  slpact=242;;
    90 )  slpact=243;;
    150 ) slpact=245;;

    * )
# everything else, make it an hour just to be safe
      slpact=242
      ;;
  esac      
                                                  	
[ -e $dnm ] &&	blockdev --setra $sra $dnm
[ -e $dnm ] &&	hdparm -S $slpact $dnm
		
}

#a -- no spindown for usb3ssd
#/sbin/blockdev --setra 8192  $Dlinuxroot # not for ext4 "/"
#/sbin/hdparm -S 0 $Dlinuxroot 

setdrive $Dseatera4xfs 512 0
setdrive $Dzseatera10BKP 512 0
setdrive $Dzseatera4f4m8 512 0
setdrive $Dzseatera4mirA 512 0

# EXTERNAL
#setdrive $Dmilterausb3 16384 30
#P


# fix lack of /dev/dvd xxx 2011.0913
ln /dev/sr0 /dev/dvd -sfn

if [ -e /dev/sr1 ]; then
  ln $optiarc /dev/dvd -sfn
  ln $blurayburner /dev/bluray -sfn
#  ln /dev/sr1 /dev/dvd -sfn
#  ln /dev/sr0 /dev/bluray -sfn
fi

# if exist
#mount /mnt/milterausb3

/root/bin/boojum/drivemap.sh & 

(fdisk -l /dev/sd? > /tmp/fdisk-l.txt 2>/dev/null
 fdisk -l /dev/nvme?n1 >> /tmp/fdisk-l.txt 2>/dev/null
blkid |sort >> /tmp/fdisk-l.txt

# ls disk by id, no partitions, only certain fields, get rid of '../'
ls -l /dev/disk/by-id/ \
  | grep -v part \
  | awk '{ print $9" "$10" "$11 }' \
  | sed 's%../%%g' \
  >> /tmp/fdisk-l.txt ) &
  
      
# log smartctl info for all drives
mf=/tmp/smartctl.txt
# clearit
> $mf 
(for d in /dev/sd? $(ls -1 /dev/nvme*n1); do
  echo "-- Processing $d" >> $mf
  blockdev --getra $d >> $mf
  smartctl --smart=on $d  

  smartctl -l scterc,70,70 $d >> $mf
# xxxxx 2016.0715 enable TLER @ 7 seconds REF: http://list.zfsonlinux.org/pipermail/zfs-discuss/2016-February/024696.html

  smartctl -a $d |head -n 16 \
    >> $mf
done) & 


# 2016.jul starts squid3 if needed and renices -5, protects from oom-killer
#/root/bin/squidserver&
#/usr/local/bin/squid -kshutdown&

# xxx 2016.0407 disabled nomachine nxserver, using cpu when shouldnt even be running
#service nxserver stop&
#/etc/init.d/nxserver stop&
#Stopping NoMachine.

# save RAM xxx 2019.0412
#modprobe -r btrfs 
modprobe -r minix joydev parport_pc ppdev lp parport 

service brltty stop&
service saned stop&

cp /tmp/fdisk-l.txt /root
cp /tmp/smartctl.txt /root

chmod 777 /run/screen

zpool status -v |awk 'NF>0' >/root/zpool-status.txt &

# xxx added for proxmox 2024.0507
pvereport > /root/pvereport.log &

/root/bin/boojum/proxmox-storage-report.sh &

chvt 1

/root/bin/timesync &
/root/bin/clearcache

exit 0

==================

# REFERENCE: # set I/O scheduler for SSD ( can use /dev/disk/by-id )
#echo noop > /sys/block/sda/queue/scheduler 

# set noop scheduler on SSD
# lrwxrwxrwx 1 root 9 Dec 18 21:19 /dev/disk/by-id/scsi-SATA_KINGSTON_SH103S50026B723A07AE7D -> ../../sdd
# echo "/dev/sda"|cut -d'/' -f3
#sda
# echo "${tmp##*/}"
#sdd
#ssdtmp=`ls -1l $Dssd1`
#ssdnoop="${ssdtmp##*/}"
#echo "noop" > /sys/block/$ssdnoop/queue/scheduler # trying again 2015.0629
#echo "deadline" > /sys/block/$ssdnoop/queue/scheduler # xxx seems faster 2014.0723

# ZFS import if needed - xxx 2014.0717
#zpool import -f -o readonly=on -R /zfs bigvaiterazfs

#tmpvar=`mount|grep 'on / type'`
# pattern match and strip out the number (only works with single digits)
#echo ${tmpvar%? on*}
#/dev/sdc
#mount
#/dev/sdc1 on / type ext4 (rw,noatime,errors=remount-ro,commit=0)

# superseded by getdrive; keeping for method notes
rootdev=${tmpvar%? on*}
/sbin/hdparm -S 0 $rootdev # /dev/sdb # 500 GB " / ", extra 
#/sbin/hdparm -S 245 $rootdev # /dev/sdb # 500 GB " / ", extra