Release Notes

Table Of Contents
Workaround:
NOTE: The output of each command varies based on your system configuration.
Follow the steps:
1. Identify the parent device to which the NVMe device is connected using the following command:
lspci -t
-+-[0000:e0]-+-00.0
| +-00.2
| +-01.0
| +-02.0
| +-03.0
| +-03.1-[e2]----00.0
From the above snippet, the device e2:00.0 is the NVMe device and the device e0:03.1 is the
parent device. The parent device is used for the steps that are described subsequently.
2. Read the Slot Status Register in the PCI Express Capability structure by running the following
command:
setpci -s e0:03.1 CAP_EXP+0x1a.w
Output: 0148 (value returned)
3. Clear the event bits that are impacted by running the following command:
setpci -s e0:03.1 CAP_EXP+0x1a.w=0x0108
4. Re-read the Slot Status Register to confirm that event bits are cleared by running the following
command:
setpci -s e0:03.1 CAP_EXP+0x1a.w
Output: 0040 (value returned)
5. Unplug the drive and then plug-in the drive after clearing the event bits.
Solution
The issue is resolved in Red Hat Enterprise Linux 8.2 z-stream kernel version
kernel-4.18.0-193.13.2.el8_2.x86_64 and later
Systems
affected:
PowerEdge R6515, PowerEdge R7515, PowerEdge R6525, PowerEdge C6525, and PowerEdge R7525
Tracking number: 155501, 155503
Operating system enters the dracut shell during boot
Description:
When Red Hat Enterprise Linux 8.1 is installed on PowerEdge RAID Controller (PERC) virtual disk (VD)
and the system is rebooted, during this boot process the system enters the dracut shell with the following
error message:
scsi_alloc_sdev: Allocation failure during SCSI scanning
Applies to: Red Hat Enterprise Linux 8.1
Cause: The SCSI disk discovery failure is due to an issue in the block device allocation code.
Solution: Update the kernel to 4.18.0-147.5.1.el8_1.x86_64 version or later.
Systems
affected:
All Dell EMC PowerEdge servers
Tracking number: 160374
16 Fixes