Open file in nano (or other text editor) from root user:
nano /etc/systemd/system/multi-user.target.wants/mariadb.service
Change parameters in file:
# Restart crashed server only, on-failure would also restart, for example, when # my.cnf contains unknown option Restart=always RestartSec=45s
Restart daemons:
systemctl daemon-reload systemctl restart mariadb.service
For 4G USB Modem Dongle (Huawei) E3372-325 — first seconds you can see in lsusb Bus 005 Device 013: ID 3566:2001 Mobile Mobile and after Bus 005 Device 015: ID 12d1:155e Huawei Technologies Co., Ltd. Mobile
Full instruction here https://blog.tanatos.org/posts/huawei_e3372h-325_brovi_with_linux/.
So 2 scripts are below
/usr/local/bin/brovi_switch (make it executable!)
#!/bin/bash
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
# vim: filetype=bash
# 2023-01-28 Pavel Piatruk, piatruk.by
ID=$$
USB_ID=$(basename $DEVPATH)
{
#set|sort
#ls -la /sys/$DEVPATH
echo bInterfaceClass on ports as follows
grep -H . /sys$DEVPATH/1*/bInterfaceClass
IC=$( grep -h . /sys$DEVPATH/*:1.0/bInterfaceClass )
echo "got bInterfaceClass on 1st port $IC"
echo usb_modeswitch -b $BUSNUM -g $DEVNUM -v 3566 -p 2001
case $IC in
08)
echo Storage MODE
;;
e0)
echo "Already RNDIS"
LOCKFILE=/var/run/brovi.$USB_ID.lock
if [[ -e $LOCKFILE ]]
then
LOCKFILE_AGE=$(( $(date +%s ) - $(stat $LOCKFILE -c %Y) ))
echo LOCKFILE_AGE=$LOCKFILE_AGE
fi
if [[ -n $LOCKFILE_AGE ]] && [[ $LOCKFILE_AGE -lt 10 ]]
then echo was switched VERY recently, noop
else
set > $LOCKFILE
CMDS=(
"usb_modeswitch -b $BUSNUM -g $DEVNUM -v $ID_VENDOR_ID -p $ID_MODEL_ID -W -R -w 400 "
"usb_modeswitch -b $BUSNUM -g $DEVNUM -v $ID_VENDOR_ID -p $ID_MODEL_ID -W -R "
)
i=0
for CMD in "${CMDS[@]}"
do
i=$(($i+1))
echo "=====STEP$i, run: $CMD"
$CMD
done
fi
;;
ff)
echo Serial Port
;;
*)
echo Unknown mode
;;
esac
} | logger -t BROVI
exit 0
and UDEV script /etc/udev/rules.d/40-huawei.rules
ACTION!="add", GOTO="modeswitch_rules_end"
SUBSYSTEM!="usb", GOTO="modeswitch_rules_end"
# All known install partitions are on interface 0
ATTRS{bInterfaceNumber}!="00", GOTO="modeswitch_rules_end"
GOTO="modeswitch_rules_begin"
LABEL="modeswitch_rules_begin"
# Huawei E3372-325
ATTR{idVendor}=="3566", ATTR{idProduct}=="2001", RUN+="/usr/local/bin/brovi_switch %k %p"
LABEL="modeswitch_rules_end"
You can use qemu package.
apt-get install qemu
After you can check and load network block device kernel-module:
rmmod nbd modprobe nbd max_part=8
Then you connect image:
qemu-nbd -c /dev/nbd0 image.vdi
And mount (don’t forget create mount directory /media/image):
mount /dev/nbd0p1 /media/image
And unmount:
qemu-nbd -d /dev/nbd0