In RHEL 6.x and SLES 11, the kernel supports a maximum 255 partitions; therefore, the
maximum number of minor devices is 256, which supports 255 partitions.
Make sure to create no more partitions than what is actually supported by your operat-
ing system kernel.
L-6: How to perform an orderly or surprise removal/insertion with Micron's 2.5-inch
drives using SLES 11 SPI operating system without errors
In SLES 11 SP1, to perform a surprise removal and surprise insertion without error, you
must append a correction to the kernel boot line. This is a known limitation of the SLES
kernel.
Append the following line to the kernel boot command line to support orderly surprise
removal/insertion:
pci=noaer nox2apic
1. Open grub file
/boot/efi/EFI/redhat/grub.conf
in UEFI BIOS and
/boot/grub/
menu.lst
in legacy BIOS.
2. Add
pci=near nox2apci
option to kernel boot command line:
kernel /boot/vmlinuz-2.6.32-358.el6.x86_64 ro root=UUID=516031ca-
e380-4855-9d7a-c4a30799973a rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8
rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=128M KEYBOARDTYPE=pc
KEYTABLE=us rd_NO_DM rhgb quiet
pci=noaer nox2apic
L-7: Stale entry may be created in /etc/mtab file after surprise removal of mounted file
system for the P420m/P320h drive
If a file system is mounted on the drive and the drive is surprise removed, the drive will
go into FTL rebuild state on the next surprise insertion. After FTL rebuild completes, the
system will restore the previous device node (/dev/rssdX), but you may notice a stale
entry in /etc/mtab file. Additionally, the new node will be detected as the next available
letter of rssdX,
To clear the stale mtab entry, issue an unmount for this device node entry or restart the
system.
L-8: Using the P420m/P320h as a boot drive in RHEL 5.x
The RHEL 5.x kernel does not provide a default boot loader to boot into RHEL 5.x;
therefore, a /boot partition must created while installing RHEL 5.x on the drive.
This /boot partition must be:
• Separate from the /(root) partition
• The first partition on the device
• The primary partition
• At least 200 MB
Continue to install the OS on the drive following the instructions in Using the P420m or
P320h as a Boot Drive (page 22).
P420m/P320h HHHL PCIe SSD Installation Guide
Troubleshooting
PDF: 09005aef8497e00a
P420m_P320h_HHHL_installation_guide.pdf - Rev. V 12/14 EN
37
Micron Technology, Inc. reserves the right to change products or specifications without notice.
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2012 Micron Technology, Inc. All rights reserved.
