HP-UX系统恢复指南

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"System Recovery of HP-UX文档涵盖了HP-UX系统的恢复过程，包括自动化和手动恢复程序，以及针对不同机器类型的启动模式。" 在HP-UX操作系统中，系统恢复是确保服务连续性和数据安全的关键部分。该文档"System Recovery"详细介绍了在遇到系统故障或灾难性事件时如何恢复HP-UNIX系统到正常工作状态。首先，文档阐述了HP-UX系统的启动流程，这对于理解如何在启动过程中解决问题至关重要。了解系统如何从硬盘、网络或光盘启动，以及如何进入单用户模式和逻辑卷管理器（LVM）维护模式，对于诊断和修复启动问题非常有用。自动化恢复程序包括四个步骤，旨在帮助用户快速修复关键问题： 1. **重建bootlif和安装关键文件**：这个过程修复引导加载程序，并恢复系统启动所需的基本文件。 2. **仅安装关键文件**：当系统能正常启动但需要更新或恢复特定文件时，可以执行此操作。 3. **仅重建bootlif**：如果引导加载程序损坏，但内核和其他系统文件完好，可选择此选项。 4. **仅替换内核**：当内核文件出现问题时，此步骤允许用户从备份或恢复介质中安装新内核。此外，文档还提供了一些协同操作步骤，如从CD、磁带或网络启动，以及通过恢复主菜单引导系统。这些方法适用于更复杂的情况，例如系统崩溃或需要冷安装最小操作系统。手动恢复程序包括两种情况： 1. **冷安装后的恢复**：在最小操作系统安装后，需要执行一系列步骤来恢复完整的系统环境。 2. **从零开始的恢复**：当整个根卷组（RootVG）需要重建时，这个过程将指导用户完成从头开始的恢复，包括创建新的卷组和文件系统。文档还详细列出了`RECOVERY.DOC`和`LVM.RECOVER`文件的内容，这两个文件在系统恢复过程中扮演重要角色，包含关键的恢复指令和指南。对于不同的机器类型，如Series700系列，文档还特别讨论了替代磁盘启动和使用不同内核启动的策略。这确保了在各种硬件配置下的系统恢复灵活性。 "System Recovery of HP-UX"是管理员在处理HP-UX系统故障时的重要参考资源，它提供了全面的恢复策略和详细的操作指南，以确保系统的高效和可靠恢复。

Chapter 4 System Recovery

June 2003 Chapter 4 / Page 9

one to your new file system, enter moved. To overwrite your existing kernel enter

overwritten. After entering moved the following is displayed:

-- '/stand/vmunix' has been renamed '/stand/vmunixBK' --

downloading WINSTALL to /stand/vmunix

**** Creating device files on the customer's disk ****

WARNING: ioctl: DLKM is not initialized

******* Renaming the following customer files: *******

-- '/etc/passwd' has been renamed '/etc/passwdBK' --

-- '/sbin/pre_init_rc' has been renamed '/sbin/pre_init_rcBK' --

-- '/etc/inittab' has been renamed '/etc/inittabBK' --

-- '/etc/ioconfig' has been renamed '/etc/ioconfigBK' --

-- '/.profile' has been renamed '/.profileBK' --

-- '/etc/fstab' has been renamed '/etc/fstabBK' --

-- '/stand/ioconfig' has been renamed '/stand/ioconfigBK' --

-- '/etc/profile' has been renamed '/etc/profileBK' --

During the reboot process interrupt auto boot and

bring the kernel up in 'maintenance mode' and continue

with lvm recovery.

For example, at the ISL prompt enter:

ISL> hpux -lm (0/0/2/0.0.0)/stand/vmunix

RECOVERY COMPLETION

Use this menu after the recovery process has installed all requested

files on your system.

Select one of the following:

a. REBOOT the customer's system and continue with recovery.

b. Return to the HP-UX Recovery Media Main Menu.

Selection:

11. Once you find yourself at the Recovery Completion menu, complete the recovery

process by selecting a. The system should automatically come up in LVM

Maintenance Mode if –lm was included in the Boot String Verification menu. Type

the following command from the shell prompt for more information about completing

the recovery process:

# cat /RECOVERY.DOC

# cat /LVM.RECOVER

These two files are also part of this document.

Automated Procedure 2: Installing Critical Files only

1. Boot the system to the Recovery Main Menu (see Co-Procedure).

2. From the main menu select Recover an unbootable HP-UX system. The following

menu is presented:

HP-UX Recovery MENU

Select one of the following:

Chapter 4 System Recovery

June 2003 Chapter 4 / Page 10

a. Rebuild the bootlif (ISL, HPUX, and the AUTO file) and install

all files required to boot and recover HP-UX on the

root file system.

b. Do not rebuild the bootlif, but install files required to boot

and recover HP-UX on the root file system.

c. Rebuild only the bootlif.

d. Replace only the kernel on the root file system.

m. Return to 'HP-UX Recovery Media Main Menu'.

x. Exit to the shell.

Use this menu to select the level of recovery desired.

Selection:

3. Select b to install critical files only; the following menu is then displayed:

DEVICE FILE VERIFICATION

This menu is used to specify the path of the root file system.

When the information is correct, select 'a'.

INFORMATION to verify:

Device file used for '/'(ROOT) is c0t1d0s1lvm

The path to disk is 0/0/1/0.1.0

Select one of the following:

a. The above information is correct.

b. WRONG!! The device file used for '/'(ROOT) is incorrect.

m. Return to the 'HP-UX Recovery MENU.'

x. Exit to the shell.

NOTE: If '/' is an LVM, use an 's1lvm' suffix (e.g.,c0t1d0s1lvm).

Selection:

Carefully check if the patch is the correct one, enter a in this case. In doubt choose

Exit to shell and verify the path using ioscan(1M). If you enter b; the following is then

displayed:

Enter the device file associated with the '/'(ROOT) file system

(example: c0t1d0s1lvm )

4. Enter the appropriate device file, in our case we choose c2t0d0s1lvm since we try to

recover a system with LVM layout. The following menu is displayed next:

FILE SYSTEM CHECK

The file system check '/sbin/fs/hfs/fsck -y /dev/rdsk/c2t0d0s1lvm'

will now be run.

Select one of the following:

a. Run fsck -y .

b. Prompt for the fsck run string on c2t0d0s1lvm.

m. Return to the 'HP-UX Recovery MENU.'

5. Select a to run fsck -y to check your file system for corruption; you will see a display

similar to the following:

** /dev/rdsk/c2t0d0s1lvm

** Last Mounted on /ROOT/stand

** Phase 1 - Check Blocks and Sizes

** Phase 2 - Check Pathnames

** Phase 3 - Check Connectivity

剩余47页未读，继续阅读

WilliamEvan

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--------- beginning of system --------- beginning of main这两条是什么意思？

--------- beginning of system 和 --------- beginning of main 区别

--------- beginning of system --------- beginning of main

130|console:/ # logcat -s alogd --------- beginning of kernel --------- beginning of system --------- beginning of main

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