Linux error diagnosis

Article Title: Linux operating system error diagnosis. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.

Overall Diagnosis

Start with the easiest way:

Check log files

Turn on the debug switch of many services

Check the configuration file

BUG

SRPM package

Diagnosis

System guidance

Boot Program configuration (grub or lilo)

Kernel (parameter, image file), configuration file improper or damaged

File System

File System corruption often occurs when the system crashes or an improper shutdown.

The 'dirty' problem of ext2. It is marked as 'dirty' if it is not installed. It needs to be fixed for a long time.

Ext3: added log files help the file system to quickly restore

The kernel will read the log file to fix the file if it is not properly uninstalled.

/Etc/rc. d/rc. sysinit

Run fsck to check the mark in/etc/fstab

X

Do not use debug on runtime Level 5

First, try to use Xconfigurator and other configuration commands

X? Probeonly

// Whether the/home partition is full or the quota issue occurs

Whether Xfs is started

Restore the system from the running level

Resume the system with running level 1

Running status: init S or init 1

Enable: Linux single (lilo)

Ro root = LABEL =/1 (grub boot screen Press a, add 1)

Disk Recovery/boot

Create Boot Disk: mkbootdisk

Fix:

Edit/boot/grub. conf

Command: grub-install/dev/hda

Use rescue

Used when the root file system cannot be installed

N boot from a CD or floppy disk: linux rescue