Problems with deleting a HSZ70 unit

From: R. Richard Hirtler <hirtler_at_colltech.com>
Date: Wed, 01 Nov 2000 11:07:48 -0500

I am in the process of cleaning out the lower cabinet of an HSZ70 array
controller. Here is the output from /sbin/scu:

    CAM Equipment Device Table (EDT) Information:

        Device: RRD46 Bus: 0, Target: 4, Lun: 0, Type: Read-Only Direct
Access
        Device: RZ1CB-CA Bus: 1, Target: 1, Lun: 0, Type: Direct Access
        Device: RZ1CB-CS Bus: 1, Target: 2, Lun: 0, Type: Direct Access
        Device: P1000 6220000 Bus: 3, Target: 0, Lun: 0, Type: Medium
Changer
        Device: DLT7000 Bus: 3, Target: 2, Lun: 0, Type: Sequential
Access
        Device: DLT7000 Bus: 3, Target: 3, Lun: 0, Type: Sequential
Access
        Device: HSZ70 Bus: 4, Target: 0, Lun: 0, Type: Direct Access
        Device: HSZ70 Bus: 4, Target: 0, Lun: 1, Type: Direct Access
        Device: HSZ70 Bus: 4, Target: 1, Lun: 0, Type: Direct Access
        Device: HSZ70 Bus: 4, Target: 1, Lun: 1, Type: Direct Access
        Device: HSZ70 Bus: 4, Target: 1, Lun: 2, Type: Direct Access
        Device: HSZ70 Bus: 5, Target: 0, Lun: 1, Type: Direct Access
        Device: HSZ70 Bus: 5, Target: 0, Lun: 2, Type: Direct Access
        Device: HSZ70 Bus: 5, Target: 1, Lun: 0, Type: Direct Access
        Device: HSZ70 Bus: 5, Target: 1, Lun: 1, Type: Direct Access
        Device: HSZ70 Bus: 5, Target: 1, Lun: 2, Type: Direct Access

I accessed the lower cabinet via hsxterm:

    /usr/lbin/hsxterm ­b5 ­t0 ­l0

which, if I understand correctly, placed me on the upper controller of the
lower cabinet.

The first device I wanted to delete was D0. According to the documentation,
I need to clear lost data errors or unwriteable data before deleting the
unit. So here are the commands I ran and the output:

    Lower-Upper> clear_errors d0 lost_data

        Error 7060: Cannot clear LOST_DATA on a unit without LOST_DATA

OK. I figured that perhaps LOST_DATA was a parameter not defined when the
unit was created.

    Lower-Upper> clear_errors d0 unwriteable_data

        Error 7070: Cannot clear UNWRITEABLE_DATA on a unit without
UNWRITEABLE_DATA

Same conclusion. So then I performed the delete:

    Lower-Upper> delete d0

        ScsiExecCli Failed

It sat like this for several minutes, and when I pressed the RETURN key the
message repeated. Finally, I entered <ctrl-C> which bounced me out to the
shell prompt. But now when I try to re-enter on bus 5/target 0, I receive
the following message:

    Unable to open device

Previously, I could still access the lower cabinet from the lower controller
(bus5/target 1). However, not that appears to not be working.

I need answers to the following questions:

* The StorageWorks documentation stated that I should clear errors before
deleting a unit. Is that always necessary?

* What is the meaning of the message ³ScsiExecCli Failed² and what do I do
to avoid it?

* What do I need to do to clear the controllers on the lower cabinet (bus 5)
so I can access it via target 0 or target 1?

Thanks for your help,

-Ric
-----
R. Richard Hirtler Senior Consultant/Northeast Region
hirtler_at_colltech.com Collective Technologies
-----
It is the province of knowledge to speak, and it is the privilege of wisdom
to listen. ‹Oliver Wendell Holmes, Sr.
Received on Wed Nov 01 2000 - 16:09:35 NZDT

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