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Old 11-08-2011, 11:01 PM
Yong Huang
Default offline /sys/class/scsi_device/*/device/state

This is Red Hat 4. We use IBM's sdd (Subsystem Device Driver) for device
multipath. Note the degrade state below:

# datapath query adapter

Active Adapters :2

Adpt# Name State Mode Select Errors Paths Active
0 Host0Channel0 DEGRAD ACTIVE 1065540982 30 28 23
1 Host1Channel0 DEGRAD ACTIVE 1021183874 30 28 22

and some SCSI devices' state is offline:

# find /sys/class/scsi_device/*/device/state -exec grep offline {} /dev/null ;

Storage is provided by HP. Running commands `hp_rescan -a' followed by
`cfgcpath' made no difference.

Fortunately, the software running on the box, i.e. Oracle database, has
no problem. But I wonder if something is wrong and potentially can cause
issues. Thanks.

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