Solaris系统管理培训(11)

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Solaris系统管理培训(第十一章:磁盘配置和命名)

提供者:jzj 发表日期:2002-01-24


Solaris下,一个磁盘包含8个分区,标记为0-7。 
分区0位根分区,包含启动的信息 
分区2代表整个磁盘 
交换分区可以是任何分区,默认为分区1 
其它分区用户存放数据 
逻辑设备名存放在/dev/dsk和/dev/rdsk中。这些名称是/devices目录下的符号连接。使用逻辑设备名便于系统管理员操作。
Sun使用下列命名方式定义逻辑设备名: 
/dev/[r]dsk/c#t#d#s# 
c:逻辑控制器号 
t:物理总线目标号 
d:磁盘或逻辑单元号(LUN) 
s:分区号 
物理设备名表示设备的完整信息,如设备总线地址。物理设备名在/devices目录下。
# ls -l /dev/dsk/c0t3d0s0 
lrwxrwxrwx 1 root root 86 Oct 20 16:04 /dev/dsk/c0t3d0s3 -> 
../../devices/iommu@0,10000000/sbus@0,10001000/espdma@5,8400000/esp@5,880
0000/sd@3,0:d 
实例名是系统设备的简称。例如: 
sdn where s = SCSI, d = disk, and n = 逻辑磁盘号,例如sd0,表示第一个SCSI磁盘设备。 
dmesg显示实例名 
dmesg命令鉴别系统所连接的设备。以实例和物理设备名称的方式显示。
# dmesg|more 
May 13 20:18 
cpu0: SUNW,UltraSPARC (upaid 0 impl 0x10 ver 0x40 clock 167 MHz) 
SunOS Release 5.7 Version Generic [UNIX(R) System V Release 4.0] 
Copyright (c) 1983-1998, Sun Microsystems, Inc. 
NOTICE: 64 bit OS installed, but the 32-bit OS is the default 
    for the processor(s) on this system. 
    See boot(1M) for more information. 
Booting the 32-bit OS ... 

mem = 196608K (0xc000000) 
avail mem = 189440000 
Ethernet address = 8:0:20:9b:60:b5 
root nexus = Sun Ultra 1 SBus (UltraSPARC 167MHz) 
sbus0 at root: UPA 0x1f 0x0 ... 
sbus0 is /sbus@1f,0 
dma0 at sbus0: SBus0 slot 0xe offset 0x8400000 
dma0 is /sbus@1f,0/espdma@e,8400000 
/sbus@1f,0/espdma@e,8400000/esp@e,8800000 (esp0): 
    esp-options=0x46
... 
... 

prtconf用于显示系统的配置信息,包括内存、外围设备等。 
# prtconf|more 
System Configuration: Sun Microsystems sun4u 
Memory size: 192 Megabytes 
System Peripherals (Software Nodes): 
SUNW,Ultra-1 
  packages (driver not attached) 
    terminal-emulator (driver not attached) 
    deblocker (driver not attached) 
    obp-tftp (driver not attached) 
    disk-label (driver not attached) 
    sun-keyboard (driver not attached) 
    ufs-file-system (driver not attached) 
  chosen (driver not attached) 
  openprom (driver not attached) 
    client-services (driver not attached) 
  options, instance #0 
  aliases (driver not attached) 
  memory (driver not attached) 
  virtual-memory (driver not attached) 
  counter-timer (driver not attached) 
  sbus, instance #0 
    SUNW,CS4231, instance #0 (driver not attached) 
    auxio (driver not attached) 
... 
... 

当在系统中增加新设备时,需要重新配置系统的硬件信息。这样,系统就会重新构建/devices和/dev目录。
下面是新增加硬盘的步骤: 
1.在根目录下创建一个名为/reconfiguration的空文件,然后重新关机。
2. 将硬盘接上机器,然后开机。 
3.用format命令查看新增的硬盘。 
# touch /reconfigure 
# init 5 
# format