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59 lines
2.3 KiB
Bash
Executable File
59 lines
2.3 KiB
Bash
Executable File
#!/bin/bash
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# From https://scottlinux.com/2014/07/15/determine-remaining-ssd-life-in-linux/
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# Or https://askubuntu.com/questions/865792/how-can-i-monitor-the-tbw-on-my-samsung-ssd
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#######################################
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# Variables #
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#######################################
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SSD_DEVICE=${1:-"/dev/sda"}
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ON_TIME_TAG="Power_On_Hours"
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WEAR_COUNT_TAG="Wear_Leveling_Count"
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LBAS_WRITTEN_TAG="Total_LBAs_Written"
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LBA_SIZE=512 # Value in bytes
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BYTES_PER_MB=1048576
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BYTES_PER_GB=1073741824
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BYTES_PER_TB=1099511627776
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#######################################
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# Get total data written... #
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#######################################
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# Get SMART attributes
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SMART_INFO=$(sudo /usr/sbin/smartctl -A "$SSD_DEVICE")
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DISK_INFO=$(sudo /usr/sbin/smartctl -i "$SSD_DEVICE")
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DISK_MODEL=$(echo "$DISK_INFO" | awk 'BEGIN { FS = " *: *" } ; /Device Model/ { print $2 }')
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DISK_SERIAL=$(echo "$DISK_INFO" | awk 'BEGIN { FS = " *: *" } ; /Serial Number/ { print $2 }')
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# Extract required attributes
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ON_TIME=$(echo "$SMART_INFO" | grep "$ON_TIME_TAG" | awk '{print $10}')
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WEAR_COUNT=$(echo "$SMART_INFO" | grep "$WEAR_COUNT_TAG" | awk '{print $4}' | sed 's/^0*//')
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LBAS_WRITTEN=$(echo "$SMART_INFO" | grep "$LBAS_WRITTEN_TAG" | awk '{print $10}')
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# Convert LBAs -> bytes
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BYTES_WRITTEN=$(echo "$LBAS_WRITTEN * $LBA_SIZE" | bc)
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MB_WRITTEN=$(echo "scale=3; $BYTES_WRITTEN / $BYTES_PER_MB" | bc)
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GB_WRITTEN=$(echo "scale=3; $BYTES_WRITTEN / $BYTES_PER_GB" | bc)
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TB_WRITTEN=$(echo "scale=3; $BYTES_WRITTEN / $BYTES_PER_TB" | bc)
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# Output results...
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echo "------------------------------"
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echo " SSD Status: $SSD_DEVICE"
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echo " SSD Model: $DISK_MODEL"
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echo " SSD Serial: $DISK_SERIAL"
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echo "------------------------------"
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echo " On time: $(echo $ON_TIME | sed ':a;s/\B[0-9]\{3\}\>/,&/;ta') hr"
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echo "------------------------------"
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echo " Data written:"
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echo " MB: $(echo $MB_WRITTEN | sed ':a;s/\B[0-9]\{3\}\>/,&/;ta')"
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echo " GB: $(echo $GB_WRITTEN | sed ':a;s/\B[0-9]\{3\}\>/,&/;ta')"
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echo " TB: $(echo $TB_WRITTEN | sed ':a;s/\B[0-9]\{3\}\>/,&/;ta')"
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echo "------------------------------"
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echo " Mean write rate:"
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echo " MB/hr: $(echo "scale=3; $MB_WRITTEN / $ON_TIME" | bc | sed ':a;s/\B[0-9]\{3\}\>/,&/;ta')"
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echo "------------------------------"
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echo " Drive health: ${WEAR_COUNT} %"
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echo "------------------------------"
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