Common SAN device errors

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Several SAN-specific messages can be issued when you experience problems with your storage agent SAN devices.

See Table 1 for errors that are generated for SAN devices.
Table 1. Common SAN device errors
Error Explanation
ANR8302E I/O error on drive TSMDRIVE01 (/dev/mt9) (OP=WRITE, Error Number=5, CC=205, KEY=FF, ASC=FF, ASCQ=FF, SENSE=**NONE**, Description=General SCSI failure). Refer to Appendix D in the 'Messages' manual for appropriate action

This message is often issued for SAN device errors. The CC=205 reports that the device driver detects a SCSI adapter error. If a SAN-attached device encounters a link reset that is caused by link loss, it is reported back to the device driver as a SCSI adapter error.

The underlying cause of this error is the event that caused the link reset due to the link loss. The path for this device might be updated to ONLINE=NO by issuing the UPDATE PATH command. Do not set the path to ONLINE=YES until the cause for the link reset was isolated and corrected.
ANR8957E: command: Autodetect is OFF and the serial number reported by the library did not match the serial number in the library definition

The IBM Storage Protect SAN Device Mapping encountered a path for the library that reports a different serial number than the current IBM Storage Protect definition for the library. The AUTODETECT parameter was set to NO for the command that prevented the server from updating the serial number for the library.

Determine the new path and issue the UPDATE PATH command to correct this error.
ANR8958E: command: Autodetect is OFF and the serial number reported by the drive did not match the serial number in the drive definition

IBM Storage Protect SAN Device Mapping encountered a path for a drive that reports a different serial number than the current IBM Storage Protect definition for that drive. The AUTODETECT parameter was set to NO for the command, which prevents the server from updating the serial number for this drive.

Determine the new path and issue the UPDATE PATH command to correct this error.
ANR8963E: Unable to find path to match the serial number that is defined for drive driveName in library libraryName
The SAN Device Mapping was not able to find a SAN device that was previously defined to the server. The most likely cause for this is that the device itself was removed or replaced in the SAN. The following steps might resolve this error:
  • Device Removed

    If the device was removed from the SAN, delete the server definitions that refer to this device. Issue the QUERY PATH F=D command to determine any paths that reference the device. Then issue the DELETE PATH command to remove these paths.

  • Device Replace
    A SAN Device was replaced with a new device as a result of maintenance or an upgrade. Perform the following procedures:
    • Try not to delete the drive or drive path definition after you replace the drive.
    • Issue one of the following server commands:
      • UPDate DRive <libraryName> <driveName> SERIAL=AUTODetect

        This command force-records the new serial number into the server database. Because the drive is replaced, the element number stays the same.

      • UPDate PATH <sourceName> <driveName> SRCT=SERVER DESTT=DRIVE LIBRary=<libraryName> DEVIce=xxxxx AUTODetect=Yes

        This command force-records the new serial number into the database. Because the drive is replaced, the element number stays the same.

    • If the drive or drive path is deleted, redefine this new, replaced drive. You must restart the IBM Storage Protect server so that the element number/serial number map for the library is refreshed. This mapping occurs only at initialization.
Issue the QUERY PATH F=D command to find any paths that are defined on the server that reference this device, then issue the following command to update the path information: 
UPDATE PATH AUTODetect=Yes
ANR8972E: Unable to find element number for drive driveName in library libraryName

If the ELEMent parameter is set to AUTODetect when defining the drive, IBM Storage Protect automatically gets the drive's element number. However, if the library does not provide an element number/serial number map, this message is issued.

Perform the following steps to correct this error:
  1. Determine the element number for this tape drive.
  2. Issue the UPDATE DRIVE command to update the device element number.

Linux operating systemsAIX operating systemsTo help with problem determination, you can use the dsmsanlist module to obtain information about devices on a storage area network (SAN). The dsmsanlist module is installed by default when the IBM Storage Protect server or the IBM Storage Protect storage agent is installed.