Differences

This shows you the differences between two versions of the page.

--- aix:vios_ssp [2021/01/01 21:21]
127.0.0.1 external edit
+++ aix:vios_ssp [2023/08/16 23:31] (current)
manu [Convert a LU thick to thin in a SSP]
@@ Line 1: / Line 1: @@
 ====== Using Shared Storage Pools on VIOS ======
+https://github.com/nigelargriffiths/Shared-Storage-Pool-Tools
+https://www.ibm.com/support/pages/shared-storage-pool-ssp-best-practice
 So here is a quick one line script "ncluster"
@@ Line 74: / Line 78: @@
 Here is another example after the SSP5 has noticed all the VIOS are at the higher level
+<cli prompt='$'>
 No State Repos Pool Role ---Upgrade-Status--- Node-Name
     OK    OK   OK         2.2.4.10 ON_LEVEL bronzevios1.aixncc.uk.ibm.com
@@ Line 81: / Line 85: @@
     OK    OK   OK         2.2.4.10 ON_LEVEL orangevios1.aixncc.uk.ibm.com
     OK    OK   OK  DBN    2.2.4.10 ON_LEVEL redvios1.aixncc.uk.ibm.com
-$
+</cli>
@@ Line 144: / Line 148: @@
 As we no longer need a sort the LUs by name we can reduce the ksh script to just one line (4 for readability):
+<cli prompt='$'>
 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,$6}'
+</cli>
 This works on BOTH VIOS 2.2.3 (random order) and the future VIOS 2.2.4 (Tier then LU name order) and you get:
-VIOS 2.2.3.x
+<code>
-  SizeMB  UsedMB Used%  Type    Tier Name
- 1048576  971779   92%  THIN  SYSTEM purple3files
-   65536  100% THICK  SYSTEM orange5a
-   19956   60%  THIN  SYSTEM vm34
-   32768  100%  THIN  SYSTEM vm61b
-    3392   10%  THIN  SYSTEM AIX735_b
-   27016   82%  THIN  SYSTEM vm16boot
-   26563   40%  THIN  SYSTEM ruby32data1
-       0    0%  THIN  SYSTEM emerald3
-       0    0%  THIN  SYSTEM volume-orange5_data1
-VIOS 2.2.4
  SizeMB  UsedMB Used%  Type    Tier Name
        0    0%  THIN    test testa
@@ Line 176: / Line 167: @@
     2562    6%  THIN    prod vm96boot
       26    0%  THIN    prod vm96data
+</code>
 Note: I have two Tiers here and they are ordered first.
@@ Line 193: / Line 184: @@
+<cli prompt='$'>
 $ nlu -?
 /home/padmin/nlu Nigel's lu command with improved layout and column ordering
 /home/padmin/nlu [-sizemb | -usedmb | -used | -type | -tier | -name (default)]
-$
+</cli>
 Example default output by LU Name - my favourite default
+<cli prompt='$'>
 $ nlu
  SizeMB  UsedMB Used%  Type  Tier Name
@@ Line 211: / Line 202: @@
     2562    6%  THIN  test vm97boot
       23    0%  THIN  test vm97data
-$
+</cli>
 Example output reordered by column
+<cli prompt='$'>
 $ nlu -sizemb
  SizeMB  UsedMB Used%  Type  Tier Name
@@ Line 245: / Line 236: @@
     2562    6%  THIN  test vm97boot
       23    0%  THIN  test vm97data
+</cli>
 Here is the actual ksh script for nlu that is Nigel's New lu command
 Runnable as padmin, root or any padmin like user (restricted shell with oem_setup_env command).
+===== Alerting =====
+<cli prompt='$'>
+$ alert -set -clustername demo1 -spname demosp -type threshold -value 75
+$ Pool freespace is 47 percent.
+$ alert -list -clustername demo1 -spname demosp -type threshold
+PoolName: demosp
+PoolID: 00000000097938230000000050E9B08C
+ThresholdPercent: 75
+$ alert -unset -clustername demo1 -spname demosp -type threshold
+</cli>
 ===== Pb with SSP =====
@@ Line 266: / Line 270: @@
 In the folder
   /var/vio/SSP/
+===== Convert a LU thick to thin in a SSP =====
+Use nslim ...
+https://www.ibm.com/support/pages/shared-storage-pools-hands-fun-virtual-disks-lu-example
+<code>
+$ ./nslim -?
+Usage: ./nslim (v4) is a filter style program using stdin & stdout
+        It will thinly write a file (only copy non-zero blocks)
+        It uses 1MB blocks
+        If a block is zero-filled then it is skipped using lseek()
+        If a block has data then it will write() the block unchanged
+Example:
+        ./nslim   <AIX.lu   >SSP-LU-name
+Flags:
+        -v for verbose output for every block you get a W=write or .=lseek on stderr
+        -V for verbose output on each GB you get count of written or skipped blocks
+                ./nslim -v   <AIX.lu   >SSP-LU-name
+                 this gives you visual feedback on progress
+        -t like verbose but does NOT actually write anything to stdout
+                 this lets you passively see the mix of used and unused blocks
+                ./nslim -t   <AIX.lu
+        -h or -? outputs this helpful message!
+Warning:
+         Get the redirection wrong and you will destroy your LU data
+</code>

wiki

User Tools

Site Tools

Differences

Page Tools