Huawei FusionServer Pro CH121 V5 User Manual page 68

FusionServer Pro CH121 V5 Compute Node
User Guide
Issue 06 (2019-08-10)
a. Run the following command to record the original a8 register value (the PCI data in
column 9 of row a0):
lspci -xxx -s <B/D/F>
<B/D/F>: indicates the root port (B/D/F) of the NVMe drive. For details about the
B/D/F information, see
For example, if the drive No. is 2, run the following command:
lspci -xxx -s 85:03.0
Figure 3-45 Querying the original register value
NOTE
If the default a8 register value is not f1, contact Huawei technical support.
b. Change the value of the a8 register to e1.
setpci -s <B/D/F> a8.B=e1
<B/D/F>: indicates the root port (B/D/F) of the NVMe drive. For details about the
B/D/F information, see
c. Run the following command to check the modification result:
lspci -xxx -s <B/D/F>
<B/D/F>: indicates the root port (B/D/F) of the NVMe drive. For details about the
B/D/F information, see
Figure 3-46 Querying the new register value of drive 2 (example)
Copyright © Huawei Technologies Co., Ltd.
Table 3-2.
Table 3-2.
Table 3-2.
3 Basic Operations
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