Shared Storage Pools phase 5 release has the lu -list command that outputs the Logical Unit (virtual disks) in Tier then Alphabetical order - hurray!

But it still has challenges and one command output can't please everyone!   The trouble is everyone has their own ideas of “perfect layout” It is a "no win" problem for the developers. Here are three of my pet hates.

Fortunately, the SSP designers are clever. The lu command has a raw output format. As an example:

 $ lu -list -field LU_SIZE LU_NAME -fmt : 
32768:testa 
40960:testb 
38912:vm97boot 
8256:vm97data 
8192:testc 
8192:v23456789012345678901234567890 
38912:vm96boot 
8256:vm96data

OK, not pretty but nothing awk can’t sort out.

As we no longer need a sort the LUs by name, we can reduce the ksh script to just one line (4 for readability):

 echo "SizeMB UsedMB Used% Type Tier Name" /usr/ios/cli/ioscli lu -list -fmt : \
 -field LU_SIZE LU_USED_SPACE LU_USED_PERCENT LU_PROVISION_TYPE TIER_NAME LU_NAME \
 | awk -F: '{ printf "%6d %6d %4d%% %5s %7s %s\n",$1,$2,$3,$4,$5,$6}'

This program works on all VIOS versions (Tier then LU name order) and you get:

  SizeMB UsedMB Used% Type Tier Name 
32768 0 0% THIN test testa 
40960 0 0% THIN test testb 
38912 2562 6% THIN test vm97boot 
8256 23 0% THIN test vm97data 
39936 39936 100% THICK prod testc 
8192 0 0% THIN prod v23456789012345678901234567890 
40960 2562 6% THIN prod vm96boot 
8256 26 0% THIN prod vm96data

Note: I have two Tiers here and they are ordered first

A good start for two lines of ksh script but not good enough for me.

I need to sort the output differently for different views of the data like:

1. All LUs in alphabetical order so I can simply find the one I want in one go.
2. Which LU has the larger size?
3. Which LU is taking the most storage?
4. Order on tiers then name when I want too.

So here is my NEW and Improved nlu ksh script where we can order the output with options and it works on VIOS 2.2 and VIOS 3.1 with Tiers.

 $ nlu -? 
/home/padmin/nlu Nigel's lu command with improved layout and column ordering 
/home/padmin/nlu [-sizemb | -usedmb | -used | -type | -tier | -name (default)] 
$

Example default output by LU Name - my favourite default

 $ nlu SizeMB UsedMB Used% Type Tier Name 
32768 0 0% THIN test testa 
40960 0 0% THIN test testb 
39936 39936 100% THICK prod testc 
 8192 0 0% THIN prod v23456789012345678901234567890 
40960 2562 6% THIN prod vm96boot 
8256 26 0% THIN prod vm96data 
38912 2562 6% THIN test vm97boot 
 8256 23 0% THIN test vm97data 
$ 

 $ nlu -sizemb 
SizeMB UsedMB Used% Type Tier Name 
 8192 0 0% THIN prod v23456789012345678901234567890 
 8256 23 0% THIN test vm97data 
 8256 26 0% THIN prod vm96data 
32768 0 0% THIN test testa 
38912 2562 6% THIN test vm97boot 
39936 39936 100% THICK prod testc 
40960 0 0% THIN test testb 
40960 2562 6% THIN prod vm96boot 

$ nlu -usedmb 
SizeMB UsedMB Used% Type Tier Name 
 8192 0 0% THIN prod v23456789012345678901234567890 
32768 0 0% THIN test testa 
40960 0 0% THIN test testb 
 8256 23 0% THIN test vm97data 
 8256 26 0% THIN prod vm96data 
38912 2562 6% THIN test vm97boot 
40960 2562 6% THIN prod vm96boot 
39936 39936 100% THICK prod testc 

$ nlu -tier 
SizeMB UsedMB Used% Type Tier Name 
9936 39936 100% THICK prod testc 
 8192 0 0% THIN prod v23456789012345678901234567890 
40960 2562 6% THIN prod vm96boot 
 8256 26 0% THIN prod vm96data 
32768 0 0% THIN test testa 
40960 0 0% THIN test testb 
38912 2562 6% THIN test vm97boot 
 8256 23 0% THIN test vm97data

Runnable as padmin, root, or any padmin like user (restricted shell with oem_setup_env command).

 if [[ $(whoami) != "root" ]] 
then command=$(whence $0) 

# echo DEBUG I am padmin so restart $command again as the root user 

echo "$command" $1 | oem_setup_env else 
# echo DEBUG now I am root 
# lowercase the parameter with tr to avoid input case errors

case `echo $1 | tr "[A-Z]" "[a-z]" ` in 
1 | -sizemb) COLUMN="-nk 1" ;; 
2 | -usedmb) COLUMN="-nk 2" ;; 
3 | -used | -used%) COLUMN="-nk 3" ;; 
4 | -type) COLUMN="-k 4" ;; 
5 | -tier) COLUMN="-k 5" ;; 
6 | -name) COLUMN="-k 6" ;; 
? | -?) 
echo $0 "Nigel's lu command with improved layout and column ordering" 
echo $0 "[-sizemb | -usedmb | -used | -type | -tier | -name (default)]" 
exit 0 ;; 
*) COLUMN="-k 6" ;; 
esac 

echo " SizeMB UsedMB Used% Type Tier Name" /usr/ios/cli/ioscli \
 lu -list -field LU_SIZE LU_USED_SPACE LU_USED_PERCENT \
 LU_PROVISION_TYPE TIER_NAME LU_NAME -fmt : \
 | awk -F: '{ printf "%7d %7d %4d%% %5s %5s %s\n", $1,$2,$3,$4,$5,$6}' \
 | sort $COLUMN fi exit 0

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