La commande pour défragmenter un système de fichier VxFS est "fsadm -F vxfs -e -d /point-de-montage"

Un système de fichier est problème de fragmentation si :

A > 50%
B > 5%
C < 5%

Visualiser l´état d´un système de fichier : fsadm -F vxfs -DE /opt

  Directory Fragmentation Report
             Dirs        Total      Immed    Immeds   Dirs to   Blocks to
             Searched    Blocks     Dirs     to Add   Reduce    Reduce
  total          3691      1388      2324       377       377         378

  Extent Fragmentation Report
        Total    Average      Average     Total
        Files    File Blks    # Extents   Free Blks
        25417           7           1      249144
    blocks used for indirects: 1
    % Free blocks in extents smaller than 64 blks: 1.64  <== A
    % Free blocks in extents smaller than  8 blks: 0.01  <== B
    % blks allocated to extents 64 blks or larger: 79.15 <== C
    Free Extents By Size
           1:          0            2:          0            4:          4   
           8:         41           16:         94           32:         70   
          64:         47          128:         19          256:          4   
         512:          2         1024:          8         2048:          0   
        4096:          2         8192:          1        16384:          3   
       32768:          3        65536:          1       131072:          0   
      262144:          0       524288:          0      1048576:          0   
     2097152:          0      4194304:          0      8388608:          0   
    16777216:          0     33554432:          0     67108864:          0   
   134217728:          0    268435456:          0    536870912:          0   
  1073741824:          0   2147483648:          0   

Défragmenter un système de fichier et visualiser l’état du système après la défragmentation : fsadm -F vxfs -DEed /opt

  Directory Fragmentation Report
             Dirs        Total      Immed    Immeds   Dirs to   Blocks to
             Searched    Blocks     Dirs     to Add   Reduce    Reduce
  total          3691      1388      2324       377       377         378


  Directory Fragmentation Report
             Dirs        Total      Immed    Immeds   Dirs to   Blocks to
             Searched    Blocks     Dirs     to Add   Reduce    Reduce
  total          3691      1010      2701         0         0           0

  Extent Fragmentation Report
        Total    Average      Average     Total
        Files    File Blks    # Extents   Free Blks
        25040           7           1      249522
    blocks used for indirects: 1
    % Free blocks in extents smaller than 64 blks: 1.79
    % Free blocks in extents smaller than  8 blks: 0.16
    % blks allocated to extents 64 blks or larger: 79.30
    Free Extents By Size
           1:        376            2:          1            4:          4   
           8:         41           16:         94           32:         70   
          64:         47          128:         19          256:          4   
         512:          2         1024:          8         2048:          0   
        4096:          2         8192:          1        16384:          3   
       32768:          3        65536:          1       131072:          0   
      262144:          0       524288:          0      1048576:          0   
     2097152:          0      4194304:          0      8388608:          0   
    16777216:          0     33554432:          0     67108864:          0   
   134217728:          0    268435456:          0    536870912:          0   
  1073741824:          0   2147483648:          0   

  Extent Fragmentation Report
        Total    Average      Average     Total
        Files    File Blks    # Extents   Free Blks
        25040           7           1      249523
    blocks used for indirects: 0
    % Free blocks in extents smaller than 64 blks: 3.41	 <== A
    % Free blocks in extents smaller than  8 blks: 0.11  <== B
    % blks allocated to extents 64 blks or larger: 79.46 <== C
    Free Extents By Size
           1:         61            2:         25            4:         41   
           8:        124           16:        170           32:        141   
          64:        106          128:         54          256:         24   
         512:          2         1024:          7         2048:          0   
        4096:          2         8192:          1        16384:          2   
       32768:          3        65536:          1       131072:          0   
      262144:          0       524288:          0      1048576:          0   
     2097152:          0      4194304:          0      8388608:          0   
    16777216:          0     33554432:          0     67108864:          0   
   134217728:          0    268435456:          0    536870912:          0   
  1073741824:          0   2147483648:          0