Linux Operating System Errors

Table 7-8 describes issues related to the Linux operating system.

Table 7-8. Linux Operating System Errors

Error Message

Suggested Solution

 

 

<Date:Time> <HostName>

This error message displays when the Linux

kernel: sdb: asking for

Small Computer System Interface (SCSI)

cache data failed

mid-layer asks for physical disk cache settings.

<Date:Time> <HostName>

Because the controller firmware manages the

virtual disk cache settings on a per controller

kernel: sdb: assuming

and a per virtual disk basis, the firmware does

drive cache: write

not respond to this command. Thus, the Linux

through

SCSI mid-layer assumes that the virtual disk's

 

 

cache policy is Write-Through. SDB is the device

 

node for a virtual disk. This value changes for

 

each virtual disk.

 

See the section "Physical Disk Management" on

 

page 104 for more information about Write-

 

Through cache.

 

Except for this message, there is no side effect to

 

this behavior. The cache policy of the virtual

 

disk and the I/O throughput are not affected by

 

this message. The cache policy settings for the

 

PERC6 SAS RAID system remain the settings

 

you have already chosen.

Troubleshooting

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Dell UCP-60, UCP-61, UCC-60 manual Linux Operating System Errors, Describes issues related to the Linux operating system, 125
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