Sun Storage L25 Tape Library
 

GCS>Sun Microsystems>Storage - Tape>Libraries - L-Series
 

Applies to:

Symptoms

Sun Fire 280R
Solaris 8 2/04
Latest recommended patch
Sun StorEdge[TM] L25 Tape Libary with Fibre Channel (FC420)
Brocade Silkworm 3800 FOS 3.1
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Connection:
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SF280R
(N)
|
| (pt-to-pt)
|
(F)
Brocade
(F)
|
| (pt-to-pt)
|
(N)
L25/FC420
|
|(SCSI)---------
|              |
Drive#1      Drive#2
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------------------------------------------------
Problem:
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- cfgadm -c configure c# fails with errors below.
aka6# cfgadm -c configure c4
cfgadm: Library error: failed to create device node: 2100001086114398:
I/O error
failed to configure ANY device on FCA port
aka6#
[/var/adm/messages]
Oct 14 14:31:21 aka6 scsi: [ID 243001 kern.info] /pci@8,600000/SUNW,qlc@1/fp@0,0 (fcp1):
Oct 14 14:31:21 aka6    ndi_devi_online: failed for scsa,08.bfcp: target=11000
lun=0 ffffffff
Oct 14 14:31:21 aka6 scsi: [ID 243001 kern.warning] WARNING: /pci@8,600000/SUNW,qlc@1/fp@0,0 (fcp1):
Oct 14 14:31:21 aka6    Failed to create nodes for pwwn=2100001086114398;
error=5
Tape and changer devices are configured.
aka6# cfgadm -o show_FCP_dev -al c4
Ap_Id                          Type         Receptacle   Occupant     Condition
c4                             fc-fabric    connected    configured   unknown
c4::2100001086114398,0         med-changer  connected    configured   unknown
c4::2100001086114398,1         tape         connected    configured   unknown
c4::2100001086114398,2         tape         connected    configured   unknown
c4::2100001086114398,3         ESI          connected    configured   unknown
aka6#
But, in this case, cfgadm doesn't add entry to /etc/cfg/fabric_WWN_map file, so
all devices listed above will be in an unconfigured state after system reboot.
aka6# cfgadm -o show_FCP_dev -al c4
Ap_Id                          Type         Receptacle   Occupant     Condition
c4                             fc-fabric    connected    unconfigured unknown
c4::2100001086114398,0         med-changer  connected    unconfigured unknown
c4::2100001086114398,1         tape         connected    unconfigured unknown
c4::2100001086114398,2         tape         connected    unconfigured unknown
c4::2100001086114398,3         ESI          connected    unconfigured unknown
aka6#
Solaris[TM] does not have support for media changer device directly (this is documented as SRDB 73102). So currently this is an expected behavior on Solaris 8.
In case of Sun StorEdge[TM] L180/Sun StorEdge[TM] L700, this is not a problem because each path/cable between host and changer/tape drive is independent.
With FC420, all devices such as changer and tape drive are accessed through the same FC port.

Changes

Cause

Solution

Error similar to the following will be observed on reboot:
Rebooting with command: boot
Boot device: sol8  File and args:
SunOS Release 5.8 Version Generic_117350-08 64-bit
Copyright 1983-2003 Sun Microsystems, Inc.  All rights reserved.
configuring IPv4 interfaces: eri0.
Hostname: aka6
ID[luxadm.create_fabric_device.2316] configuration failed for line
(/devices/pci@8,600000/SUNW,qlc@1/fp@0,0:fc::2100001086114398) in file:
/etc/cfg/fp/fabric_WWN_map. I/O error

During a 'cfgadm -c configure' for FC attachment point,  the following occurs:
1.) Device nodes are created (enumeration)
2.) Device is available to system (e.g format, etc...)
3.) Device information is stored into mapfile.
In step 1,  a med-changer was enumerated and could not be attached, since Solaris has no native driver to handle the device and therefore no device node was created.  The rest of the devices, i.e. tapes, were configured and made available to system,  but the last step of writing to fabric_WWN_map was skipped since not all devices were successfully created.
The '-o force_update" option overrides the default behavior and performs step 3 regardless of error encountered previously.

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