IT水電工-哆啦胖虎

最近在Survey如何縮短TXT和SR-IOV Validation的時間，透過控哩啦(Clonezilla)將事先準備好的雙OS Environment倒回去到新的HDD上，而且做出來的Image總Total也不超過20G(原本加起來大約80G左右)，時間也從原本4～6小時縮短至1小時左右，只是倒回去的時候因為雙系統的關係，導致無法直接順利開進去到OS內，所以在這邊Record一下怎樣將倒回去的OS Environment做Grub files的修復(只要設定完Saved Location之後，就會出現Restore的相關Options，反之則不會出現)，使得可以成功且快速達到減少時間的目的，直接看下去吧，如下：

I.TXT Environment(SLES 11.3 -> sda1&sda2；RHEL -> sda3&sda5)
1) Modify the grub file in the RHEL 6(倒好之後Reboot會看到RHEL的Grub)
＃vi /boot/grub/grub.conf
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You do not have a /boot partition. This means that
# all kernel and initrd paths are relative to /, eg.
# root (hd0,2)
# kernel /boot/vmlinuz-version ro root=/dev/sda3
# initrd /boot/initrd-[generic-]version.img
#boot=/dev/sda
default=0
timeout=-1
splashimage=(hd0,2)/boot/grub/splash.xpm.gz
#hiddenmenu
title Red Hat Enterprise Linux 6 (2.6.32-504.el6.x86_64) with tboot
root (hd0,2)
kernel /boot/tboot.gz logging=vga,serial,memory
module /boot/vmlinuz-2.6.32-504.el6.x86_64 ro root=UUID=e1055f1c-42eb-4e36-8c2d-9a3ba2bacb1c intel_iommu=on amd_iommu=on 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
module /boot/initramfs-2.6.32-504.el6.x86_64.img
title SUSE Linux Enterprise Server 11 SP3 - 3.0.76-0.11 with tboot
rootnoverify (hd0,0)
makeactive
chainloader +1
2) Modify the grub file about the SLES 11.3 in the RHEL6(因SLES 11.3是用HDD Type所定義root partition的位置，修改之後Reboot即可)
＃mount /dev/sda1 /mnt
＃ls /dev/disk/by-id -> Query the name about HDD type
＃vi /mnt/boot/grub/menu.lst
# Modified by YaST2. Last modification on Wed Oct 22 04:44:55 CST 2014
default 0
timeout 8
##YaST - generic_mbr
gfxmenu (hd0,0)/boot/message
##YaST - activate
###Don't change this comment - YaST2 identifier: Original name: linux###
title SUSE Linux Enterprise Server 11 SP3 - 3.0.76-0.11 with tboot
root (hd0,0)
kernel /boot/tboot.gz logging=vga,serial,memory
module /boot/vmlinuz-3.0.76-0.11-default root=/dev/disk/by-id/ata-ST91000640NS_9XG5708H-part1 showpts resume=/dev/disk/by-id/ata-ST91000640NS_9XG5708H-part2 splash=silent crashkernel=256M-:128M showopts vga=0x314
module /boot/initrd-3.0.76-0.11-default
###Don't change this comment - YaST2 identifier: Original name: failsafe###
title Failsafe -- SUSE Linux Enterprise Server 11 SP3 - 3.0.76-0.11
root (hd0,0)
kernel /boot/vmlinuz-3.0.76-0.11-default root=/dev/disk/by-id/ata-INTEL_SSDSC2BA100G3L_BTTV335302TR100FGN-part1 showopts ide=nodma apm=off noresume edd=off powersaved=off nohz=off highres=off processor.max_cstate=1 nomodeset x11failsafe vga=0x314
initrd /boot/initrd-3.0.76-0.11-default

II.SR-IOV Environment(SLES 11.3 -> sda1&sda2；RHEL -> sda3&sda5)
3) Modify the grub file through PXE with RHEL 6(很不幸，倒好開出來是SLES的Grub)
＃mkdir -p /temp -> 怕蓋掉原本PXE在用的/mnt
＃mount /dev/sda1 /temp
＃ls /dev/disk/by-id -> Query the name about HDD type
＃vi /temp/boot/grub/menu.lst -> 怕只有一個tty可以在vi內執行:r! ls /dev/disk/by-id來找
# Modified by YaST2. Last modification on Thu Oct 23 10:33:26 CST 2014
default 0
timeout 8
##YaST - generic_mbr
gfxmenu (hd0,0)/boot/message
##YaST - activate
###Don't change this comment - YaST2 identifier: Original name: linux###
title SUSE Linux Enterprise Server 11 SP3 - 3.0.76-0.11 SRIOV
root (hd0,0)
##Please ref /dev/disk/by-id/ata-XXX to modify the information about root partition through rhel6
kernel /boot/vmlinuz-3.0.76-0.11-default root=/dev/disk/by-id/ata-ST91000640NS_9XG5708H-part1 showpts resume=/dev/disk/by-id/ata-ST91000640NS_9XG5708H-part2 splash=silent crashkernel=256M-:128M showopts vga=0x314 intel_iommu=on
initrd /boot/initrd-3.0.76-0.11-default
###Don't change this comment - YaST2 identifier: Original name: failsafe###
title Failsafe -- SUSE Linux Enterprise Server 11 SP3 - 3.0.76-0.11
root (hd0,0)
kernel /boot/vmlinuz-3.0.76-0.11-default root=/dev/disk/by-id/ata-INTEL_SSDSC2BA100G3L_BTTV335302TR100FGN-part1 showopts ide=nodma apm=off noresume edd=off powersaved=off nohz=off highres=off processor.max_cstate=1 nomodeset x11failsafe vga=0x314
initrd /boot/initrd-3.0.76-0.11-default
title Red Hat Enterprise Linux 6 (2.6.32-504.el6.x86_64) SRIOV
root (hd0,2)
makeactive
chainloader +1
4) Preparation the environment before clonezillaing and check the grub file in the RHEL 6(因透過SLES Grub做引導，所以不用修改RHEL的Grub file)
＃grub-install /dev/sda3 -> Preparation before clonezillaing
＃cat /boot/grub/grub.conf -> Check the file
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You do not have a /boot partition. This means that
# all kernel and initrd paths are relative to /, eg.
# root (hd0,2)
# kernel /boot/vmlinuz-version ro root=/dev/sda3
# initrd /boot/initrd-[generic-]version.img
#boot=/dev/sda
default=0
timeout=-1
splashimage=(hd0,2)/boot/grub/splash.xpm.gz
#hiddenmenu
title Red Hat Enterprise Linux 6 (2.6.32-504.el6.x86_64) SRIOV
root (hd0,2)
kernel /boot/vmlinuz-2.6.32-504.el6.x86_64 ro root=UUID=b1de227d-77b1-4688-ad36-54bc99f47823 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 intel_iommu=on
initrd /boot/initramfs-2.6.32-504.el6.x86_64.img
title SUSE Linux Enterprise Server 11 SP3 - 3.0.76-0.11 SRIOV
root (hd0,0)
makeactive
chainloader +1
◎、以上就是修復RHEL 6 & SLES 11.3 Grub files的簡易介紹，純粹紀錄一下Progress，如果看倌們有興趣也可以自己玩一玩，等有空再補上RHEL 7&SLES 12的部分，先到這，收工囉！