^树_引

¶ 文件系统惊魂

2007-06-15 23:43

事件
经验.教训

1. 事件

* Mounting local filesystem....

惊慌:

稳定运行一周的DELL D620 Laptop under Ubuntu7.04
一回到家开机就停在上述情况不再有反应

1.1. 处理

幸好有系统管理员的朋友依然在线
幸好家里的 AMD 兼容机 under Ubuntu 6.04 依然工作
询问,得知得fsck 一下

1.2. fsck

幸好随身带着Ubuntu 的DVD!

启动进入后:

$sudo su -
#ls /dev | grep sda
sda 
...
sda11

幸好重装机器时详细的记录了分区信息:
- 升级Ubuntu
- 从Dapper到Feisty 的征程
所以优先檢查对启动有影响的 /; /usr ;/home

1.3. 幸运ReiserFS

#fsck -t reiserfs /dev/sda2
#fsck -t reiserfs /dev/sda11

果然 /usr 檢查出问题提示进行--rebuild-tree
```
#fsck -t reiserfs --rebuild-tree /dev/sda11
```

结果不行?! Google 一下,晕的!原来有专用的

reiserfsck 
Usage: reiserfsck [mode] [options]  device

Modes:
  --check                       consistency checking (default)
  --fix-fixable                 fix corruptions which can be fixed without 
                                --rebuild-tree
  --rebuild-sb                  super block checking and rebuilding if needed
                                (may require --rebuild-tree afterwards)
  --rebuild-tree                force fsck to rebuild filesystem from scratch
                                (takes a long time)
  --clean-attributes            clean garbage in reserved fields in StatDatas 
Options:
  -j | --journal device         specify journal if relocated
  -B | --badblocks file         file with list of all bad blocks on the fs
  -l | --logfile file           make fsck to complain to specifed file
  -n | --nolog                  make fsck to not complain
  -z | --adjust-size            fix file sizes to real size
  -q | --quiet                  no speed info
  -y | --yes                    no confirmations
  -V                            prints version and exits
  -a and -p                     some light-weight auto checks for bootup
  -f and -r                     ignored
Expert options:
  --no-journal-available        do not open nor replay journal
  -S | --scan-whole-partition   build tree of all blocks of the device