Configure Solaris system runtime linking environment。crle

Thursday Apr 16, 2009

There is a Solaris 10 Sparc in the lab which could not be booted. Some critical mysql data needs to be dumped.

Firstly I tried to  boot system into "single user mode". Press "stop+A" to enter openboot, then type "boot -s" under the ok prompt. System was rebooted, but still could not be booted. Failed.

Put a Solaris 10 Sparc installation DVD into the dvdrom. Press "stop+A", then type  "boot cdrom -s". System was rebooted and entered into the single user mode shell.

Now, I can mount the hard disk.

# mount /dev/dsk/c0t0d0s0 /a

# mkdir /tmp/a

# mount /dev/dsk/c0t0d0s7 /tmp/a

mysql was installed under /a/usr/local/mysql directory. 

# cd /a/usr/local/mysql/bin

# ./safemysqld -uroot

It reported that can not find some mysql libraries.

Use crle to check the system linking

-bash-3.2# crle

Default configuration file (/var/ld/ld.config) not found

  Platform:     32-bit MSB SPARC

  Default Library Path (ELF):   /lib:/usr/lib  (system default)

  Trusted Directories (ELF):    /lib/secure:/usr/lib/secure  (system default)

Use "crle" command to add library, crle -u -l /a/usr/local/mysql/lib. Execut safemysqld again, it reported can not find libstdc++...

crle -u -l /a/lib ; crle -u -l /a/usr/lib

Use ldd to check. It's ok now.

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有一台Solaris 10 Sparc 的机器今天不能启动了。里面有一些重要的mysql 数据需要dump出来。

首先尝试让系统进入 single user mode。 按stop＋A进入boot，在ok提示符下输入boot －s。系统重启，但还是还是不能boot。失败。

找一张Solaris 10 Sparc 安装盘放入光驱。按stop＋A进入boot，输入 boot cdrom －s。系统重启，成功进入单用户shell。

mount 系统硬盘，mount /dev/dsk/c0t0d0s0 /a。成功。原系统的根被mount到/a。 然后再mount 源系统 /export, mkdir /tmp/a; mount /dev/dsk/c0t0d0s7 /tmp/a。成功。

原系统的mysql被安装在/a/usr/local/mysql 下，cd /a/usr/local/mysql/bin。执行  ./safemysqld -uroot。出错。错误报告是找不到 mysql 需要的库。查找mysql库文件，在/a/usr/local/mysql/lib下。

用crle查看，

-bash-3.2# crle

Default configuration file (/var/ld/ld.config) not found

  Platform:     32-bit MSB SPARC

  Default Library Path (ELF):   /lib:/usr/lib  (system default)

  Trusted Directories (ELF):    /lib/secure:/usr/lib/secure  (system default)

添加库路径，crle -u -l /a/usr/local/mysql/lib。再次执行safemysqld，出错，找不到libstdc++...。原因是还没有把 mount的原系统库路径添加。

crle -u -l /a/lib ; crle -u -l /a/usr/lib

用ldd检查safemysqld。确认所有库均已链接。再次执行 safemysqld，成功。