• Table of contents
• The ungleich hardware maintenance guide
  • APU Bios Update
  • APU Serial and bootloader configuration
  • Updating the Perc H800 SAS controller
  • HP servers disk management
  • Dell servers disk management
  • SEE ALSO

The ungleich hardware maintenance guide¶

This guide describes common operations on hardware we use.

APU Bios Update¶

• Download the correct bios from https://pcengines.github.io/
  • Check whether it's apu1/2/3/4 before downloading
• Install flashrom
• Flash bios using flashrom
  • flashrom -w THEROMFILE -p internal

APU Serial and bootloader configuration¶

• Ensure that the bootloader has "console=ttyS0,115200" configured
• Ensure that there is a getty running on serial
• Use grub-bios as the bootloader
  • Install using grub-install /dev/sda

Updating the Perc H800 SAS controller¶

• wget 'https://dl.dell.com/FOLDER03292738M/3/SAS-RAID_Firmware_XKF5X_LN_12.10.7-0001_A13.BIN?uid=4b8a2506-f4d4-46a9-ab19-3c2a5008a782&fn=SAS-RAID_Firmware_XKF5X_LN_12.10.7-0001_A13.BIN' -O SAS-RAID_Firmware_XKF5X_LN_12.10.7-0001_A13.BIN
• chmod u+x SAS-RAID_Firmware_XKF5X_LN_12.10.7-0001_A13.BIN
• ./SAS-RAID_Firmware_XKF5X_LN_12.10.7-0001_A13.BIN

HP servers disk management¶

Dell servers disk management¶

Adding disks:

megacli -CfgLdAdd -r0 [Enclosure Device ID:slot] -aX (X : host is 0. md-array is 1)

# Sample call, if enclosure and slot are KNOWN (aka not N/A)
megacli -CfgLdAdd -r0 [32:0] -a0

# Sample call, if enclosure is N/A
megacli -CfgLdAdd -r0 [:0] -a0

Remove cache of disks that are not in the server anymore:

megacli -DiscardPreservedCache -Lall -aAll

Remove foreign configurations on foreign disks

megacli -CfgForeign -Clear -aAll

Do both in many cases:

megacli -DiscardPreservedCache -Lall -aAll
megacli -CfgForeign -Clear -aAll

SEE ALSO¶

• Managing OpenWRT
• The_ungleich_ceph_handbook