[Todd Wyndham]

IN=prod

for FS in `lsvg -l ${IN}vg | awk ‘$2 == “jfs” {print $NF}’` ; do

  LV=`lsvg -l ${IN}vg | awk -v FLB=$FS ‘$NF == FLB {print $1}’`

  fuser -k /dev/$LV

  fuser -k /dev/$LV

  fuser -k /dev/$LV

  umount $FS

done

varyoffvg ${IN}vg

---

Example input data:

  $ lsvg -l prodvg

  prodvg:

  LV NAME             TYPE       LPs   PPs   PVs  LV STATE      MOUNT POINT

  sites2lv            jfs        257   514   2    open/syncd    /sites2

  loglv01             jfslog     1     1     1    closed/syncd  N/A

  apache2_lv          jfs        10    20    2    closed/syncd  /apache2

  eng2log01           jfslog     1     1     1    open/syncd    N/A

---

`lsvg -l ${IN}vg | awk ‘$2 == “jfs” {print $NF}’` –>>

  awk defaults to field (column) separator of space

  $2 == “jfs” –>> test input field # 2 to string “jfs”, so it is looking at the TYPE column

  $NF –>> NF means the total number of fields found from the currently inputted line/record read in;

           but placing a “$” sign in front of the variable NF means,

           look at a given field in the inputted line/record,

           thus in this example {print $NF} says to print the value of field # 7

output from exampled lsvg input above:

  /sites2

  /apache2

so the for loop becomes:

  for FS in /sites2 /apache2 ; do …

---

LV=`lsvg -l ${IN}vg | awk -v FLB=$FS ‘$NF == FLB {print $1}’` –>>

  -v FLB=$FS –>> create the variable FLB with the value from the for loop; first time through, FLB equals /sites2

  ‘$NF == FLB {print $1}’ –>> for each inputted line, test the last input field of the currently read line/record with the variable FLB; if they are equal, print field number 1 of the current line/record;

                               translated from first time in the for loop:

                                   ‘/sites2  == /sites2 {print sites2lv}’

                                   ‘N/A      == /sites2 {print loglv01}’

                                   ‘/apache2 == /sites2 {print apache2_lv}’

                                   ‘N/A      == /sites2 {print eng2log01}’

---

so, when looping thru the for loop:

  FS = /sites2,  then LV = sites2lv

  FS = /apache2, then LV = apache2_lv

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