User Guide

Corrective Action: If the target disk fails, the Replace Member operation aborts.

General disk fails

Issue: A general disk fails.

Corrective Action: If the target disk fails and the Replace Member operation aborts but the source

data is still available, then the Replace Member operation continues as Replace

Member.

Linux operating system errors

Linux Will Not Boot Using an H310 Controller With IOMMU Enabled

Issue:

Linux operating system will not boot to a disk or virtual disk on an H310 controller.

Corrective Action: Disable IOMMU. IOMMU is not supported on H310 controllers.

Virtual Disk Policy Is Assumed As Write-Through Error Message

Error:

<Date:Time> <HostName> kernel: sdb: asking for cache data

failed

<Date:Time> <HostName> kernel: sdb: assuming drive cache: write

through

Corrective Action: The error message is displayed when the Linux Small Computer System Interface

(SCSI) mid-layer asks for physical disk cache settings. The controller firmware

manages the virtual disk cache settings on a per controller and a per virtual disk

basis, so the firmware does not respond to this command. The Linux 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 topic Write-Back And Write-Through for more information about Write-

Through cache.

Except for this message, there is no effect of this behavior on normal operation.

The cache policy of the virtual disk and the I/O throughput are not affected by this

message. The cache policy settings for the PERC SAS RAID system remain

unchanged.

Driver Does Not Auto-Build Into New Kernel

Issue: Driver does not auto-build into new kernel after customer updates.

Corrective Action: This error is a generic problem for Dynamic Kernel Module Support (DKMS) and

applies to all DKMS-enabled driver packages. This issue occurs when you perform

the following steps: