C3rd

Cleaning HDDs and monitor it
Posted: 24 Jun 2020, 1:21am - Wednesday

I've been assigned to clean up our server hardware and trying to create a monitoring how the progress going.

---------------- s04_wipe.sh ----------------------
#!/bin/bash

# s04
dd if=/dev/zero of=/dev/sdg status=progress
dd if=/dev/urandom of=/dev/sdg status=progress

---------------- s03_wipe.sh ----------------------
#!/bin/bash

# s03
dd if=/dev/zero of=/dev/sdf status=progress
dd if=/dev/urandom of=/dev/sdf status=progress

---------------- s02_wipe.sh ----------------------
#!/bin/bash

# s02
dd if=/dev/zero of=/dev/sde status=progress
dd if=/dev/urandom of=/dev/sde status=progress

---------------- s01_wipe.sh ----------------------
#!/bin/bash

# s01
dd if=/dev/zero of=/dev/sdd status=progress
dd if=/dev/urandom of=/dev/sdd status=progress

---------------- uat_wipe.sh ----------------------
#!/bin/bash

# uat
dd if=/dev/zero of=/dev/sdc status=progress
dd if=/dev/urandom of=/dev/sdc status=progress

---------------- db_wipe.sh ----------------------
#!/bin/bash

# database
dd if=/dev/zero of=/dev/sdb status=progress
dd if=/dev/urandom of=/dev/sdb status=progress

----------------os_wipe.sh ----------------------
#!/bin/bash

# os disk
dd if=/dev/zero of=/dev/sda status=progress
dd if=/dev/urandom of=/dev/sda status=progress

I ran it this way...

nohup bash s02_wipe.sh > sde.out 2>&1 &

then this is my monitoring script (monitor.sh) to check the status:

#!/bin/bash

echo "/dev/sdb: "
echo $(tail -n 1 -c 120 sdb.out) | rev | cut -d "s" -f1,2,3,4| rev
echo -e "\n"
echo "/dev/sdc: "
echo $(tail -n 1 -c 120 sdc.out) | rev | cut -d "s" -f1,2,3,4| rev
echo -e "\n"
echo "/dev/sdd: "
echo $(tail -n 1 -c 120 sdd.out) | rev | cut -d "s" -f1,2,3,4| rev
echo -e "\n"
echo "/dev/sde: "
echo $(tail -n 1 -c 120 sde.out) | rev | cut -d "s" -f1,2,3,4| rev
echo -e "\n"
echo "/dev/sdf: "
echo $(tail -n 1 -c 120 sdf.out) | rev | cut -d "s" -f1,2,3,4| rev
echo -e "\n"
echo "/dev/sdg: "
echo $(tail -n 1 -c 120 sdg.out) | rev | cut -d "s" -f1,2,3,4| rev
echo -e "\n"

then run it by:

watch -d "bash monitor.sh"

if you're needing like this, feel free to use my method.

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