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--- aix:vios_ssp [2023/08/16 23:22]
manu [Where is store the config of SSP]
+++ aix:vios_ssp [2023/08/16 23:31] (current)
manu [Convert a LU thick to thin in a SSP]
@@ Line 277: / Line 277: @@
 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>

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