AIX服务器的启动过程

在此过程的最后，系统已启动并可以使用。

boot LED code:

LED 201 - Damaged boot image

LED 223-229 - Invalid boot list

LED 551, 555, and 557 - Corrupted file system, corrupted JFS log, and so on

LED 552, 554, and 556 - Super block corrupted and corrupted customized ODM

database

LED 553 - Corrupted /etc/inittab file

LED c31: Console not yet configured. Provides instructions to select console.

LED c32: Console is an LFT terminal.

bootlist 常见选项

bootlist -m normal -o 显示当前设定的bootlist

bootlist -m normal hdisk0 hdisk1 修改bootlist

系统运行级别

Table 4-4 Run levels available on AIX 5L

Run level Description

0-1 Reserved for the future use of the operating system.

2 Contains all of the terminal process and daemons that are run in the

multiuser environment. This is the default run level.

3-9 Can be defined according to the user’s preferences

a,b,c,h These are not true run levels; they differ from run levels in that the init

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command cannot request the entire system to enter these run levels.

See 4.3, “The /etc/inittab file” on page 98 for more information.

S,s,M,m Maintenance mode. When the system enters maintenance mode from

another run level, only the system console is used as the terminal.

Run level Description

显示当前系统的运行级别

cat /etc/.init.state

列出系统运行级别的变化历史

/usr/lib/acct/fwtmp </var/adm/wtmp |grep run-level

改变系统运行级别：

telinit N

/sbin/rc.boot 由init调用，在启动的不同阶段调用不同的参数。：

Booting from disk （boot phase 1）

Varying on a root volume group （boot phase 2）

Enabling file systems （boot phase 2）

Calling the BOS installation programs or diagnostics

/etc/rc 用于rc.boot之后启动系统

Vary on all volume groups marked as auto-varyon.

Activate all paging spaces listed on /etc/swapspaces （using the swapon -a

command）。

Configure all dump devices （using the sysdumpdev -q command）。

Perform file system checks （using the fsck -fp command）。

Perform mounting of file systems marked as mount=true on the

/etc/filesystems file （using the mount all command）。

/etc/rc.net 启动网络

/etc/rc.tcpip启动tcpip服务

inetd （started by default）

gated

routed

named

timed

rwhod

There are also daemons specific to the base operating system or to other

applications that can be started through the rc.tcpip file. These daemons are:

lpd

portmap

sendmail

syslogd

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