I/O errors from unknown storage device after installing a new SAN network

Solution Unverified - Updated -

Issue

  • Just installed EMC software, EMCpower, NAVICli, and NAVIHostAgent. When the system boots the system logs show repeated kernel I/O errors.

    Aug  2 03:40:24 host1 kernel: end_request: I/O error, dev sda, sector 2097096
    Aug  2 03:40:24 host1 kernel: end_request: I/O error, dev sda, sector 2097096
    Aug  2 03:40:24 host1 kernel: end_request: I/O error, dev sda, sector 2097112
    Aug  2 03:40:24 host1 kernel: end_request: I/O error, dev sda, sector 2097112
    Aug  2 03:40:24 host1 kernel: end_request: I/O error, dev sda, sector 2097128
    Aug  2 03:40:24 host1 kernel: end_request: I/O error, dev sda, sector 2097128
    Aug  2 03:40:24 host1 kernel: end_request: I/O error, dev sda, sector 2096896
    Aug  2 03:40:24 host1 kernel: end_request: I/O error, dev sda, sector 2096896
    Aug  2 03:40:24 host1 kernel: end_request: I/O error, dev sda, sector 2096904
    Aug  2 03:40:24 host1 kernel: end_request: I/O error, dev sda, sector 2096904
    Aug  2 03:40:24 host1 kernel: end_request: I/O error, dev sda, sector 2096920
    Aug  2 03:40:24 host1 kernel: end_request: I/O error, dev sda, sector 2096920
    Aug  2 03:40:24 host1 kernel: end_request: I/O error, dev sda, sector 2096936
    Aug  2 03:40:24 host1 kernel: end_request: I/O error, dev sda, sector 2096936
    
  • The system is connected to the SAN but no disks have been assigned yet.  The only disks right now are local :

    [root@host1 tmp]# fdisk -l
    
    Disk /dev/cciss/c0d0: 293.5 GB, 293564211200 bytes
    255 heads, 63 sectors/track, 35690 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    
               Device Boot      Start         End      Blocks   Id  System
    /dev/cciss/c0d0p1   *           1          33      265041   83  Linux
    /dev/cciss/c0d0p2              34       35690   286414852+  8e  Linux LVM
    

Environment

  • Red Hat Enterprise Linux 5

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