centos7 更新 pxe 驱动方法

引言

• centos7 已经停止维护
• 新服务器使用硬件 raid/network 可能不包含驱动
• 为可以正常 PXE 安装，则需要更新 pxe 所需驱动

现象

• 浪潮服务器 PXE 安装 centos7 时现象
  
• 明显无法找到硬盘， 可以理解为没有 raid 驱动

raid 信息

• 官方驱动下载页面

更新驱动方法

• 下载了驱动之后解压

# unzip  /tmp/raid_driver.zip
Archive:  /tmp/raid_driver.zip
  inflating: mrlinuxdrv_rel/megaraid_sas_components.tgz

• 重新编译

# cd mrlinuxdrv_rel/
# ls
megaraid_sas_components.tgz
# tar xf megaraid_sas_components.tgz
# cd generic_srpm/
# rpmbuild  --rebuild megaraid_sas-07.732.03.00-1.src.rpm
...
...
Checking for unpackaged file(s): /usr/lib/rpm/check-files /root/rpmbuild/BUILDROOT/megaraid_sas-07.732.03.00-1.x86_64
Wrote: /root/rpmbuild/RPMS/x86_64/megaraid_sas-07.732.03.00-1.x86_64.rpm
Wrote: /root/rpmbuild/RPMS/x86_64/megaraid_sas-debuginfo-07.732.03.00-1.x86_64.rpm
Executing(%clean): /bin/sh -e /var/tmp/rpm-tmp.aaZieD
+ umask 022
+ cd /root/rpmbuild/BUILD
+ cd megaraid_sas-07.732.03.00
+ /usr/bin/rm -rf /root/rpmbuild/BUILDROOT/megaraid_sas-07.732.03.00-1.x86_64
+ exit 0
Executing(--clean): /bin/sh -e /var/tmp/rpm-tmp.lnjVnV
+ umask 022
+ cd /root/rpmbuild/BUILD
+ rm -rf megaraid_sas-07.732.03.00
+ exit 0

• 软件默认位置 /root/rpmbuild/RPMS/x86_64/megaraid_sas-07.732.03.00-1.x86_64.rpm

• 安装驱动测试

# modprobe megaraid_sas
# modinfo megaraid_sas
filename:       /lib/modules/3.10.0-1160.118.1.el7.x86_64/weak-updates/megaraid_sas/megaraid_sas.ko.xz
description:    Broadcom MegaRAID SAS Driver
author:         megaraidlinux.pdl@broadcom.com
version:        07.732.03.00
license:        GPL
retpoline:      Y
rhelversion:    7.9
srcversion:     C411389EBB1261D2C0A481C
alias:          pci:v00001000d000010E7sv*sd*bc*sc*i*
alias:          pci:v00001000d000010E4sv*sd*bc*sc*i*
alias:          pci:v00001000d000010E3sv*sd*bc*sc*i*
alias:          pci:v00001000d000010E0sv*sd*bc*sc*i*
alias:          pci:v00001000d000010E6sv*sd*bc*sc*i*
alias:          pci:v00001000d000010E5sv*sd*bc*sc*i*
alias:          pci:v00001000d000010E2sv*sd*bc*sc*i*
alias:          pci:v00001000d000010E1sv*sd*bc*sc*i*
alias:          pci:v00001000d0000001Csv*sd*bc*sc*i*
alias:          pci:v00001000d0000001Bsv*sd*bc*sc*i*
alias:          pci:v00001000d00000017sv*sd*bc*sc*i*
alias:          pci:v00001000d00000016sv*sd*bc*sc*i*
alias:          pci:v00001000d00000015sv*sd*bc*sc*i*
alias:          pci:v00001000d00000014sv*sd*bc*sc*i*
alias:          pci:v00001000d00000053sv*sd*bc*sc*i*
alias:          pci:v00001000d00000052sv*sd*bc*sc*i*
alias:          pci:v00001000d000000CFsv*sd*bc*sc*i*
alias:          pci:v00001000d000000CEsv*sd*bc*sc*i*
alias:          pci:v00001000d0000005Fsv*sd*bc*sc*i*
alias:          pci:v00001000d0000005Dsv*sd*bc*sc*i*
alias:          pci:v00001000d0000002Fsv*sd*bc*sc*i*
alias:          pci:v00001000d0000005Bsv*sd*bc*sc*i*
alias:          pci:v00001028d00000015sv*sd*bc*sc*i*
alias:          pci:v00001000d00000413sv*sd*bc*sc*i*
alias:          pci:v00001000d00000071sv*sd*bc*sc*i*
alias:          pci:v00001000d00000073sv*sd*bc*sc*i*
alias:          pci:v00001000d00000079sv*sd*bc*sc*i*
alias:          pci:v00001000d00000078sv*sd*bc*sc*i*
alias:          pci:v00001000d0000007Csv*sd*bc*sc*i*
alias:          pci:v00001000d00000060sv*sd*bc*sc*i*
alias:          pci:v00001000d00000411sv*sd*bc*sc*i*
depends:
vermagic:       3.10.0-1160.118.1.el7.x86_64 SMP mod_unload modversions
parm:           lb_pending_cmds:Change raid-1 load balancing outstanding threshold. Valid Values are 1-128. Default: 4 (int)
parm:           max_sectors:Maximum number of sectors per IO command (int)
parm:           msix_disable:Disable MSI-X interrupt handling. Default: 0 (int)
parm:           msix_vectors:MSI-X max vector count. Default: Set by FW (int)
parm:           allow_vf_ioctls:Allow ioctls in SR-IOV VF mode. Default: 0 (int)
parm:           throttlequeuedepth:Adapter queue depth when throttled due to I/O timeout. Default: 16 (int)
parm:           resetwaittime:Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s (int)
parm:           smp_affinity_enable:SMP affinity feature enable/disable Default: enable(1) (int)
parm:           rdpq_enable:Allocate reply queue in chunks for large queue depth enable/disable Default: enable(1) (int)
parm:           dual_qdepth_disable:Disable dual queue depth feature. Default: 0 (int)
parm:           scmd_timeout:scsi command timeout (10-90s), default 90s. See megasas_reset_timer. (int)
parm:           crashdump_enable:Firmware Crash dump feature enable/disbale Default: enable(1) (int)
parm:           perf_mode:Performance mode (only for Aero adapters), options:
                0 - balanced: High iops and low latency queues are allocated &
                interrupt coalescing is enabled only on high iops queues
                1 - iops: High iops queues are not allocated &
                interrupt coalescing is enabled on all queues
                2 - latency: High iops queues are not allocated &
                interrupt coalescing is disabled on all queues
                default mode is 'balanced' (int)
parm:           event_log_level:Asynchronous event logging level- range is: -2(CLASS_DEBUG) to 4(CLASS_DEAD), Default: 2(CLASS_CRITICAL) (int)
parm:           disable_ext_io:Disable 1M IO support Default: 0(1M IO enabled) (int)
parm:           enable_sdev_max_qd:Enable sdev max qd as can_queue. Default: 0 (int)
parm:           poll_queues:Not supported for this kernel. (int)

加载内核驱动

• 参考下面把模块载入 initramfs.img 中

# ls /boot/initramfs-$(uname -r).img $(uname -r)
/boot/initramfs-3.10.0-1160.118.1.el7.x86_64.img

# dracut -f --add-drivers megaraid_sas /boot/initramfs-$(uname -r).img $(uname -r)

• 验证驱动是否已经载入

# lsinitrd  /boot/initramfs-`uname -r`.img | grep megaraid_sas
Arguments: -f --add-drivers 'megaraid_sas'
drwxr-xr-x   2 root     root            0 May 15 16:16 usr/lib/modules/3.10.0-1160.118.1.el7.x86_64/weak-updates/megaraid_sas
-r--r--r--   1 root     root       500072 May 15 16:13 usr/lib/modules/3.10.0-1160.118.1.el7.x86_64/weak-updates/megaraid_sas/megaraid_sas.ko.xz

更新 pxe 文件

/var/lib/tftpboot/images/CentOS7.9-x86_64/
initrd.img    <- 备份该文件

用上述文件替换该文件，并重命名为  initrd.img  

参考替换后 pxe 现象

• 引导成功