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标题: 紧急求助：设置磁盘镜像后，无法重启，提示panic信息：cannot mount root [打印本页]

作者: gtaww 时间: 2008-11-28 11:35
标题: 紧急求助：设置磁盘镜像后，无法重启，提示panic信息：cannot mount root
错误信息：

panic[cpu0]/thread=140a000: vfs_mountroot:cannot mount root

0000000001409970 genunix:vfs_mountroot+70 (0, 0, 0, 200,1457ef0, 0)
%l0-3: 000000000144b800 000000000144b800 0000000000002000 0000000001495a40
%l4-7: 000000000149b800 0000000001411e58 000000000144c000 000000000144f000 0000000001409a20 genunix:main+90 (1409ba0, f0061a30,
1409ec0, 38dc6c, 2000, 500)
%l0-3: 0000000000000001 000000000140a000 0000000001413018 00000000

然后就不断重新启动。

设置磁盘镜像的步骤：
metadb -a -f -c 2 /dev/dsk/c1t0d0s7 /dev/dsk/c1t1d0s7

建立/分区镜像

metainit -f d11 1 1 c1t0d0s0
metainit d12 1 1 c1t1d0s0
metainit d10 -m d11
metaroot d10

建立swap分区镜像

metainit -f d6 1 1 c1t0d0s1
metainit d7 1 1 c1t1d0s1
metainit d5 -m d6
newfs /dev/md/dsk/d5

建立/users分区镜像

metainit -f d2 1 1 c1t2d0s0
metainit d3 1 1 c1t3d0s0
metainit d1 -m d2

修改 /etc/vfstab

重新启动系统
lockfs -fa
init 6

只做到这里，重新启动系统就出现了上面的问题。

作者: FOR_FREE 时间: 2008-11-28 11:49
可能你修改的vfstab有问题。。。

作者: gtaww 时间: 2008-11-28 11:56

原帖由 FOR_FREE 于 2008-11-28 11:49 发表
可能你修改的vfstab有问题。。。

不会的，我改的时候特别检查过的

作者: qiyouhaoran 时间: 2008-11-28 11:57
swap分区应该不需要做 newfs /dev/md/dsk/d5

建议单用户下检查下/etc/vfstab 看看正常么？

作者: hexilanlan 时间: 2008-11-28 12:09
看看 vfstab

作者: gtaww 时间: 2008-11-28 12:18

原帖由 qiyouhaoran 于 2008-11-28 11:57 发表
swap分区应该不需要做 newfs /dev/md/dsk/d5

建议单用户下检查下/etc/vfstab 看看正常么？

swap 分区做newfs应该没什么影响吧
我查了vfstab，没有问题
root分区是用metaroot修改的
其它的我只是把对应的挂接设备和fsck检测设备改成
/dev/md/dsk/d10 /dev/md/rdsk/d10
这样的格式而已

作者: gtaww 时间: 2008-11-28 12:25
标题: 我的vfstab文件
fd - /dev/fd fd - no -
/proc - /proc proc - no -
/dev/md/dsk/d5 - - swap - no -
/dev/md/dsk/d10 /dev/md/rdsk/d10 / ufs 1 no -
/dev/md/dsk/d1 /dev/md/rdsk/d1 /users ufs 2 yes rq
swap - /tmp tmpfs - yes -

作者: FOR_FREE 时间: 2008-11-28 13:35
你有无备份vfstab,将备份的vfstab拷回去看是否能启动

作者: gtaww 时间: 2008-11-28 13:41

原帖由 FOR_FREE 于 2008-11-28 13:35 发表
你有无备份vfstab,将备份的vfstab拷回去看是否能启动

把vfstab改回做镜像前的，再把/etc/system文件中的 "rootdev:/pseudo/md@0:0,10,blk" 注释掉，就可以恢复正常了。

作者: hexilanlan 时间: 2008-11-28 13:48
http://bbs.chinaunix.net/archiver/?tid-899456.html

里面有你报错的信息 panic[cpu0]/thread=140a000: vfs_mountroot:cannot mount root

里面讨论的是硬件问题。

作者: hexilanlan 时间: 2008-11-28 13:49
9楼的方法，确实是解决RAID1 出问题的根本方法。

作者: gtaww 时间: 2008-11-28 14:00

原帖由 hexilanlan 于 2008-11-28 13:49 发表
9楼的方法，确实是解决RAID1 出问题的根本方法。

可问题是镜像的问题没法解决

作者: gtaww 时间: 2008-11-28 14:23
标题: 算是解决了
刚才修改了 /kernel/drv/md.conf
加了两行：
md_devid_destroy=1;
md_keep_repl_state=1;
可以正常启动了
下面可以做metattach了

谢谢各位的回复！！

作者: hyster_dct 时间: 2009-02-20 14:17
这个问题根本原因是因为device id在metadb中错误造成的
上述两个
md_devid_destroy=1;
md_keep_repl_state=1;
这两个参数是屏蔽device id信息的
完整的metastat重建文档

solaris9故障
POST:Testing Flash/SRAM
POST:Testing SC
POST:Testing XSCF
POST:Banner
POST:FATAL check
POST:Testing Timer1
POST:Testing Tick
POST:Testing MMU
POST:Testing CPU Type
POST:Testing DTAG
POST:Memory Probe
POST:Testing Memory
POST:Testing Softint
POST:Testing U2P
POST:Testing Slave Device
POST:Testing Master Device
POST:System Configure
POST:OBP Start
Fujitsu PRIMEPOWER450 4x SPARC64 V, No Keyboard
OpenBoot 3.19.1-1, 16384 MB memory installed
Ethernet address 0:b:5d:f3:dd:cc, Host ID: 80f2ddcc.
XSCF Version: 4.14.1

Executing last command: boot
Boot device: disk  File and args:
SunOS Release 5.9 Version Generic_122300-12 64-bit
Copyright 1983-2003 Sun Microsystems, Inc.  All rights reserved.
Use is subject to license terms.
[url=]/pci@80,4000/fibre-channel@3[/url] (fjpfca0):
      INFO : link down.
[url=]/pci@80,2000/fibre-channel@2[/url] (fjpfca1):
      INFO : link down.
[url=]/pci@80,2000/fibre-channel@2[/url] (fjpfca1):
      INFO : NPORT link up (connected fabric. id=0x9c0300, 2Gbps.)
[url=]/pci@80,2000/fibre-channel@2[/url] (fjpfca1):
      found target. target_id=0x1 port_id=0x9c0000 wwn=200600a0b8321a2a alias=CMAPORT1
[url=]/pci@80,4000/fibre-channel@3[/url] (fjpfca0):
      INFO : NPORT link up (connected fabric. id=0x1a0300, 2Gbps.)
[url=]/pci@80,4000/fibre-channel@3[/url] (fjpfca0):
      found target. target_id=0x1 port_id=0x1a0000 wwn=200700a0b8321a2a alias=CMBPORT1
Cannot mount root on [url=]/pseudo/md@0:0,100,blk[/url] fstype ufs
panic[cpu0]/thread=140c000: vfs_mountroot: cannot mount root
000000000140b970 genunix:vfs_mountroot+70 (0, 0, 0, 200, 148fc38, 0)
  %l0-3: 0000000001483400 0000000001483400 0000000000002000 00000000014cede0
  %l4-7: 00000000014d4800 0000000001416f18 0000000001483c00 0000000001486c00
000000000140ba20 genunix:main+ac (140bba0, f009e5bc, 140bec0, 3952a7, 2000, 500)
  %l0-3: 0000000000000001 000000000140c000 0000000001418188 0000000000000000
  %l4-7: 0000000078002000 0000000000398000 00000000014dfcf8 000000000106bf38
skipping system dump - no dump device configured
rebooting...
Resetting ...
Jul 16 16:28:32 CST 2008 XSCF:I::[02030100] Start reset sequence
Jul 16 16:28:33 CST 2008 XSCF:I::[02030200] Reset released...
Jul 16 08:28:36 GMT 2008 PowerOn SelfTest start

解决方法:
1. Booting from CD-RM
ok boot cdrom -s

2.Executing file system check to /(root) partition.
# fsck -y /dev/rdsk/c0t8d0s0

3.Mounting /(root) partition.
# mount /dev/dsk/c0t8d0s0 /mnt

4.Editing /etc/vfstab
# TERM=vt100;export TERM
# vi /mnt/etc/vfstab
(before editing)
--------------------------------------------------------------------------------
#device  device  mount  FS fsck mount mount
#to mount to fsck  point  type pass at boot options
#
fd - /dev/fd fd - no -
/proc - /proc proc - no -
/dev/md/dsk/d10 - - swap - no -
/dev/md/dsk/d100 /dev/md/rdsk/d100 / ufs 1 no -
/dev/md/dsk/d60 /dev/md/rdsk/d60 /export/home ufs 2 yes -
/dev/md/dsk/d50 /dev/md/rdsk/d50 /opt ufs 2 yes -
swap - /tmp tmpfs - yes -
#RMS#/dev/dsk/c4t1d0s6 /dev/rdsk/c4t1d0s6 /opt/goat ufs 2 yes -
---------------------------------------------------------------------------------
(after editing)
--------------------------------------------------------------------------------
#device  device  mount  FS fsck mount mount
#to mount to fsck  point  type pass at boot options
#
fd - /dev/fd fd - no -
/proc - /proc proc - no -
/dev/dsk/c0t0d0s1 - - swap - no -
/dev/dsk/c0t0d0s0 /dev/rdsk/c0t0d0s0 / ufs 1 no -
/dev/dsk/c0t0d0s6 /dev/rdsk/c0t0d0s6 /export/home ufs 2 yes -
/dev/dsk/c0t0d0s5 /dev/rdsk/c0t0d0s5 /opt ufs 2 yes -
swap - /tmp tmpfs - yes -
#RMS#/dev/dsk/c4t1d0s6 /dev/rdsk/c4t1d0s6 /opt/goat ufs 2 yes -
---------------------------------------------------------------------------------
5. Commenting out "rootdev" line of /etc/system
# vi /mnt/etc/system
(before editing)
--------------------------------------
* Begin MDD root info (do not edit)
forceload: misc/md_trans
forceload: misc/md_raid
forceload: misc/md_hotspares
forceload: misc/md_sp
forceload: misc/md_stripe
forceload: misc/md_mirror
forceload: drv/pcipsy
forceload: drv/fjulsa
forceload: drv/sd
rootdev:/pseudo/md@0:0,100,blk
* End MDD root info (do not edit)
--------------------------------------
(after editing)
--------------------------------------
* Begin MDD root info (do not edit)
forceload: misc/md_trans
forceload: misc/md_raid
forceload: misc/md_hotspares
forceload: misc/md_sp
forceload: misc/md_stripe
forceload: misc/md_mirror
forceload: drv/pcipsy
forceload: drv/fjulsa
forceload: drv/sd
* rootdev:/pseudo/md@0:0,100,blk
* End MDD root info (do not edit)
--------------------------------------
6.Commenting out "mddb_bootlist" line of  /kernel/drv/md.conf file.
# vi /mnt/kernel/drv/md.conf
(before editing)
---------------------------------------------
#
#pragma ident "@(#)md.conf 2.1 00/07/07 SMI"
#
# Copyright (c) 1992-1999 by Sun Microsystems, Inc.
# All rights reserved.
#
name="md" parent="pseudo" nmd=128 md_nsets=4;
# Begin MDD database info (do not edit)
mddb_bootlist1="sd:15:16:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V7B/ sd:15:8208:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V7B/ sd:15:16400:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V7B/ sd:135:16:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V3D/ sd:135:8208:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V3D/ sd:135:16400:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V3D/";
# End MDD database info (do not edit)
---------------------------------------------
(after editing)
---------------------------------------------
#
#pragma ident "@(#)md.conf 2.1 00/07/07 SMI"
#
# Copyright (c) 1992-1999 by Sun Microsystems, Inc.
# All rights reserved.
#
name="md" parent="pseudo" nmd=128 md_nsets=4;
# Begin MDD database info (do not edit)
# mddb_bootlist1="sd:15:16:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V7B/ sd:15:8208:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V7B/ sd:15:16400:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V7B/ sd:135:16:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V3D/ sd:135:8208:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V3D/ sd:135:16400:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V3D/";
# End MDD database info (do not edit)
---------------------------------------------
7.Editing /etc/lvm/mddb.cf and /etc/lvm/md.cf
# cd /mnt/etc/lvm
# mv ./mddb.cf ./mddb.cf.bak
# touch ./mddb.cf
# chgrp sys ./mddb.cf
# mv ./md.cf ./md.cf.bak
# touch ./md.cf
# chgrp sys ./md.cf
8.Clearing the status databese area to 0.
# dd if=/dev/zero of=/dev/rdsk/c0t8d0s3 bs=1024k
# dd if=/dev/zero of=/dev/rdsk/c0t0d0s3 bs=1024k
9.Unmount /(root) partition
# cd /
# umount /mnt

10.Executing file system check /(root) partition again.
# fsck -y /dev/rdsk/c0t8d0s0

11.Shuting down the system
# shutdown -i0 -g0 -y
-----------------------------------------------------------------------------------------------------------------------------------------------------
12.Booting the system up
# boot
After system is booted up, please execute metadb/metastat and then you may see
the message "there are no existing databases" for confirming there is no meta device.

13.Creating status database.
# metadb -f -a -c 3 c0t8d0s3
# metadb -f -a -c 3 c0t0d0s3
14.Creating mirror of /(root) partition.
# metainit -f d11 1 1 c0t8d0s0
# metainit -f d12 1 1 c0t0d0s0
# metainit d1 -m d11
# metaroot d1

confirm that the root partition in /etc/vfstab is metadevice and rooddev is added in the
/etc/systme.

15. Invalidating device ID
# vi /kernel/drv/md.conf
(before editing)
---------------------------------------------
#
#pragma ident "@(#)md.conf 2.1 00/07/07 SMI"
#
# Copyright (c) 1992-1999 by Sun Microsystems, Inc.
# All rights reserved.
#
name="md" parent="pseudo" nmd=128 md_nsets=4;
# Begin MDD database info (do not edit)
mddb_bootlist1="sd:15:16:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V7B/ sd:15:8208:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V7B/ sd:15:16400:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V7B/ sd:135:16:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V3D/ sd:135:8208:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V3D/ sd:135:16400:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V3D/";
# End MDD database info (do not edit)
---------------------------------------------
(after editing)
---------------------------------------------
#
#pragma ident "@(#)md.conf 2.1 00/07/07 SMI"
#
# Copyright (c) 1992-1999 by Sun Microsystems, Inc.
# All rights reserved.
#
name="md" parent="pseudo" nmd=128 md_nsets=4;
md_devid_destroy=1;(add it)
md_keep_repl_state=1;(add it)
# Begin MDD database info (do not edit)
mddb_bootlist1="sd:15:16:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V7B/ sd:15:8208:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V7B/ sd:15:16400:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V7B/ sd:135:16:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V3D/ sd:135:8208:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V3D/ sd:135:16400:id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800V3D/";
# End MDD database info (do not edit)
---------------------------------------------

16.Locking the file system and then reboot it once.
# lockfs -fa
# shutdown -i6 -g0 -y
Confirming the result of executing metastat turns to be that device ID is invalid.
valid
Device Relocation Information:
Device Reloc  Device ID
c1t0d0 Yes id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800UFU
c0t0d0 Yes id1,sd@SFUJITSU_MAW3147NC_______DAF4P7800ULK
invalid
Device Relocation Information:
Device Reloc  Device ID
c1t0d0 No
c0t0d0 No
17.Creating mirror of the rest of partitions.
# metainit -f d21 1 1 c0t8d0s1
# metainit -f d22 1 1 c0t0d0s1
# metainit d2 -m d21
# metainit -f d51 1 1 c0t0d0s5
# metainit -f d52 1 1 c1t0d0s5
# metainit d50 -m d51
# metainit -f d61 1 1 c0t0d0s6
# metainit -f d62 1 1 c1t0d0s6
# metainit d60 -m d61

18.Editing /etc/vfstab
# vi /etc/vfstab
(before editing)
--------------------------------------------------------------------------------
#device  device  mount  FS fsck mount mount
#to mount to fsck  point  type pass at boot options
#
fd - /dev/fd fd - no -
/proc - /proc proc - no -
/dev/dsk/c0t0d0s1 - - swap - no -
/dev/dsk/c0t0d0s0 /dev/rdsk/c0t0d0s0 / ufs 1 no -
/dev/dsk/c0t0d0s6 /dev/rdsk/c0t0d0s6 /export/home ufs 2 yes -
/dev/dsk/c0t0d0s5 /dev/rdsk/c0t0d0s5 /opt ufs 2 yes -
swap - /tmp tmpfs - yes -
#RMS#/dev/dsk/c4t1d0s6 /dev/rdsk/c4t1d0s6 /opt/goat ufs 2 yes -
---------------------------------------------------------------------------------
(after editing)
--------------------------------------------------------------------------------
#device  device  mount  FS fsck mount mount
#to mount to fsck  point  type pass at boot options
#
fd - /dev/fd fd - no -
/proc - /proc proc - no -
/dev/md/dsk/d10 - - swap - no -
/dev/md/dsk/d100 /dev/md/rdsk/d100 / ufs 1 no -
/dev/md/dsk/d60 /dev/md/rdsk/d60 /export/home ufs 2 yes -
/dev/md/dsk/d50 /dev/md/rdsk/d50 /opt ufs 2 yes -
swap - /tmp tmpfs - yes -
#RMS#/dev/dsk/c4t1d0s6 /dev/rdsk/c4t1d0s6 /opt/goat ufs 2 yes -
---------------------------------------------------------------------------------
19.Rebooting the system
# shutdown -i6 -g0 -y
20.Synchronizing the mirror disks
# metattach d1 d12
# metattach d2 d22

*You can confirm the status of mirror synchronization by executing the command below.
  # metastat | grep %
As a result, please confirm all the status are Okay.
21. Setting the dump device.
# dumpadm -d swap

作者: morrow 时间: 2009-02-20 15:42
很强大

这是卷管理么？完全看不懂

只会一点点zfs

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