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Full Discussion: Script to check the SAN paths.
Top Forums Shell Programming and Scripting Script to check the SAN paths. Post 302549210 by mahive on Monday 22nd of August 2011 08:15:27 AM
Old 08-22-2011
Script to check the SAN paths.
Hello All,
We have a script which when run on the host gives us the status of the internal and SAN attached disks, its paths and other information. The output of which is as follows:

Code:
Nm DEVICE VEND PROD LunID SYM DevID DISKGROUP SIZE N E
----------------------------------------------------------------------------------------
1. cciss/c0d0 HP LOGICAL VOLUME N/A N/A N/A 68.33 1 1
2. sdb EMC SYMMETRIX 27 7300 251 app_DG 50.58 2 2
----------------------------------------------------------------------------------------
N =Number of Paths (NE =Not Enabled)
E =Number of Currently Enabled Paths

================================================== =======

The requirement now is to create another script which will check the SAN path status from the above script. If the no of Paths shows less than 1 for SAN disks, then I should get an alert that SAN path failed or if all the path is ok, then SAN path is ok.

Thanking in anticipation.

Regards
Last edited by pludi; 08-22-2011 at 09:25 AM..
 

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LEARN ABOUT HPUX

norewind_close_disabled

norewind_close_disabled(5)					File Formats Manual					norewind_close_disabled(5)

NAME

       norewind_close_disabled - determine whether access to tape device special files without the no-rewind-on-close option is allowed

VALUES

   Default
   Allowed values
DESCRIPTION

       Note: this tunable was named in releases prior to HP-UX 11i v3.

       This  tunable  notifies the tape driver whether it should allow access to device special files without the no-rewind-on-close option.  When
       this tunable is on, the tape driver will fail any open on a tape device special file that does not have the no-rewind-on-close option (that
       is, or with a status of

       The  tunable  allows  the  safe	sharing of tape devices in SAN tape backup solution configurations.  The disabling of device special files
       without no-rewind-on-close in a SAN tape backup solution configuration prevents the accidental sending of a rewind command  on  close  from
       HP-UX systems via standard tape commands like which would corrupt a backup in process.

   Who Is Expected to Change This Tunable?
       Anyone.

   Restrictions on Changing
       Changes to this tunable take effect immediately.

   When Should the Tunable Be Turned On?
       This tunable should be turned on if the system is going to be used in a SAN tape backup solution configuration.

   What Are the Side Effects of Turning the Tunable On?
       The  tape  driver  will	fail any open to a tape device special file that does not have the no-rewind-on-close option with a status of This
       behavior prevents the usage of any tape device special file without the no-rewind-on-close option.

   When Should the Tunable Be Turned Off?
       This tunable should be turned off if the system is not part of a SAN tape backup solution configuration or the  system  utilizes  will  not
       function unless it has access to device special files without the no-rewind-on-close option.

   What Are the Side Effects of Turning the Tunable Off?
       A rewind may be issued accidentally from this system on close, possibly corrupting a backup being issued from another system on the SAN.

   What Other Tunables Should Be Changed at the Same Time?
       None.

EXAMPLES

       Query the current value of the tunable:

       Set the value of the tunable to

       To save the value of the tunable across reboots:

WARNINGS

       All  HP-UX kernel tunable parameters are release specific.  This parameter may be removed or have its meaning changed in future releases of
       HP-UX.

       Installation of optional kernel software, from HP or other vendors, may cause changes to tunable  parameter  values.   After  installation,
       some  tunable  parameters may no longer be at the default or recommended values.  For information about the effects of installation on tun-
       able values, consult the documentation for the kernel software being installed.	For information about optional kernel  software  that  was
       factory installed on your system, see at

AUTHOR

       was developed by Hewlett-Packard.

SEE ALSO

       scsi_tape(7), scsimgr_estape(7).

							     Tunable Kernel Parameters					norewind_close_disabled(5)
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