Solaris 10拆除镜像单盘启动
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Solaris 10拆除镜像
单盘启动
1.概述
在Solaris系统发生故障，系统重启后无法进入系统，也不会自动进入维护模式（metadb全部丢失）,不断自动重启情况下，通过修改vfstab和system文件，恢复到不带镜像的单盘启动操作系统。
操作环境如下：
2.操作准备
1、准备一张Solaris 10的光盘用于进入单用户模式；
2.1.确认故障
根据下列系统启动信息，可才发现系统找不到启动的镜像盘，可以判断是两块镜像硬盘同时故障，或metadb文件全部丢失
所致。
ok boot
Sun Blade 2500, No Keyboard
Copyright 1998-2003 Sun Microsystems, Inc. All rights reserved.
OpenBoot 4.9.7, 4096 MB memory installed, Serial #60984762.
Ethernet address 0:3:ba:a2:8d:ba, Host ID: 83a28dba.
Rebooting with command: boot
Boot device: /pci@1d,700000/scsi@4/disk@1,0 File and args:
SunOS Release 5.10 Version Generic_147147-26 64-bit
Copyright (c) 1983, 2013, Oracle and/or its affiliates. All rights reserved. Cannot open mirrored root device, error 19 //不能启动镜像磁盘Cannot remount root on /pseudo/md@0:0,100,blk fstype ufs
panic[cpu0]/thread=180e000: vfs_mountroot: cannot remount root
000000000180b950 genunix:vfs_mountroot+398 (60010fdaac0, 1869298, 188d858, 18b3400, 18bb800, 1863bd0)
%l0-3: 0000060010fdaac0 0000000001296400 0000000001863968 0000060010fdaac0
%l4-7: 000000000188d858 0000000000002021 0000000000000021 0000000000002000 000000000180ba10 genunix:main+10c (18b2800, 180c000, 183b1c0, 10a8000, 0, 183c070) %l0-3: 0000000000000001 0000000070002000 0000000070002000 0000000000000000
%l4-7: 0000000001843800 0000000000000000 0000000001815400 0000000001815648
syncing file systems... done
skipping system dump - no dump device configured
rebooting... //系统不断自动重启
Sun Blade 2500, No Keyboard
Copyright 1998-2003 Sun Microsystems, Inc. All rights reserved.
OpenBoot 4.9.7, 4096 MB memory installed, Serial #60984762.
Ethernet address 0:3:ba:a2:8d:ba, Host ID: 83a28dba.
Rebooting with command: boot
Boot device: /pci@1d,700000/scsi@4/disk@0,0:a File and args:
|
/k /
3.解决方法(修改vfstab和system文件)
3.1.进入ok模式
在维护模式输入init 0进入ok模式
# init 0
# svc.startd: The system is coming down. Please wait.
svc.startd: 81 system services are now being stopped.
svc.startd: The system is down.
syncing file systems... done
Program terminated
ok
ok
3.2.从光盘引导进入单用户模式
把盘放入光驱，boot cdrom –s从光盘引导进入单用户模式
ok boot cdrom -s
Boot device: /pci@1e,600000/ide@d/cdrom@2,0:f File and args: -s
SunOS Release 5.10 Version Generic_147440-01 64-bit
Copyright (c) 1983, 2011, Oracle and/or its affiliates. All rights reserved.
Booting to milestone "milestone/single-user:default".
Configuring devices.
Using RPC Bootparams for network configuration information.
Attempting to configure interface ce3...
Skipped interface ce3
Attempting to configure interface ce2...
Skipped interface ce2
Attempting to configure interface ce1...
Skipped interface ce1
Attempting to configure interface ce0...
Configured interface ce0
Attempting to configure interface bge0...
Skipped interface bge0
Requesting System Maintenance Mode
SINGLE USER MODE
#
#
3.3.Mount磁盘分区到/a
# format