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Linux server cannot see the presented lun

on my red hat linux 5 server i have a ssigned lun 100

when i do

lsscsi i get

[1:0:8:100]  disk    DELL     MD36xxf          0780  /dev/sdf

when i do

pvcreate /dev/sdf

i get

 pvcreate /dev/sdf
  /dev/sdf: read failed after 0 of 4096 at 0: Input/output error
  /dev/sdf: read failed after 0 of 4096 at 16492674351104: Input/output error
  /dev/sdf: read failed after 0 of 4096 at 16492674408448: Input/output error
  /dev/sdf: read failed after 0 of 4096 at 4096: Input/output error
  Device /dev/sdf not found (or ignored by filtering).

any ideas what i am i missing ?
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c_hockland
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ASKER

also

pvdisplay
  /dev/mpath/mpath3: read failed after 0 of 4096 at 16492674351104: Input/output error
  /dev/mpath/mpath3: read failed after 0 of 4096 at 16492674408448: Input/output error
  /dev/mpath/mpath3: read failed after 0 of 4096 at 0: Input/output error
  /dev/mpath/mpath3: read failed after 0 of 4096 at 4096: Input/output error
  /dev/sdf: read failed after 0 of 4096 at 0: Input/output error
  /dev/sdf: read failed after 0 of 4096 at 16492674351104: Input/output error
  /dev/sdf: read failed after 0 of 4096 at 16492674408448: Input/output error
  /dev/sdf: read failed after 0 of 4096 at 4096: Input/output error
  /dev/sdg: read failed after 0 of 4096 at 0: Input/output error
  /dev/sdg: read failed after 0 of 4096 at 16492674351104: Input/output error
  /dev/sdg: read failed after 0 of 4096 at 16492674408448: Input/output error
  /dev/sdg: read failed after 0 of 4096 at 4096: Input/output error
  --- Physical volume ---
  PV Name               /dev/sda2
  VG Name               VolGroup00
  PV Size               135.86 GB / not usable 21.41 MB
  Allocatable           yes
  PE Size (KByte)       32768
  Total PE              4347
  Free PE               1083
  Allocated PE          3264
  PV UUID               PP8pAY-DuHx-b9TV-HfeA-BmKK-SEqV-Ygx0KX
ASKER CERTIFIED SOLUTION
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Darr247
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