SERVER-108254: Only execute du on filesystems that are getting full t… (#39215)

GitOrigin-RevId: 76b6940ec0849d442695a85d965e2cdc2e606f95

evergreen/full_disk_debug.sh

@@ -1,24 +1,30 @@
 # What percent a filesystem has to be filled to be considered "full"
 FULL_DISK_THRESHOLD=90
 HAS_FULL_DISK=false
+declare -a FULL_DISKS
 
 # This will output the percent each filesystem is full in the following format:
-# 91% /dev/root
-# 7% /dev/nvme0n1p15
-# 34% /dev/nvme1n1
-FILESYSTEMS=$(df -H | grep -vE '^Filesystem|tmpfs|cdrom' | awk '{ print $5 " " $1 }')
+# 91% /dev/root /
+# 7% /dev/nvme0n1p15 /System/Volumes/Data
+# 34% /dev/nvme1n1 /System/Volumes/Update
+FILESYSTEMS=$(df -H | grep -vE '^Filesystem|tmpfs|cdrom|map' | awk '{ print $5 " " $1 " " $9 }')
 while read -r output; do
     usep=$(echo "$output" | awk '{ print $1}' | cut -d'%' -f1)
     partition=$(echo "$output" | awk '{ print $2 }')
+    mountpoint=$(echo "$output" | awk '{ print $3 }')
     if [ $usep -ge $FULL_DISK_THRESHOLD ]; then
         echo "Running out of space \"$partition ($usep%)\" on $(hostname) as on $(date)"
         HAS_FULL_DISK=true
+        FULL_DISKS+=("$mountpoint")
     fi
 done <<<"$FILESYSTEMS"
 
 if $HAS_FULL_DISK; then
-    # print all files that are above one megabyte sorted
-    du -cha / 2>/dev/null | grep -E "^[0-9]+(\.[0-9]+)?[G|M|T]" | sort -h
+    echo "Checking disks"
+    for item in "${FULL_DISKS[@]}"; do
+        # print all files that are above one megabyte sorted
+        du -cha "$item" 2>/dev/null | grep -E "^[0-9]+(\.[0-9]+)?[G|M|T]" | sort -h
+    done
 else
     echo "No full partitions found, skipping"
 fi