Centos 6.4 disk troubleshooting steps

Centos 6.4 disk troubleshooting steps
I. Fault symptom:

1. startup Error

2. view the disk file system check results using Df-k

3. Fdisk-l check results

4. Fsck/dev/sda check results

Ii. Fault Analysis

1. An error is reported when the system is started. The fsck check/dev/sda2 partition file system is damaged.

2. During Df-k check, only one mounted file system is found.

3. The Fdisk-l result shows that the/dev/sda disk has bad channels.

4. An error is returned when Fsck-y/dev/sda attempts to fix the issue.

Iii. troubleshooting steps

1. Shut down and replace the 2 TB faulty Disk

2. Restart the server and enter the single-user mode.

3. Mount the root Partition

Command: mount-o remount, rw/

4. Delete the original disk Mount path

1) command: Vi/etc/fstab

2) comment out the original path as follows:

# UUID = f5a015f9-2466-4c9b-b545-2212b2669905/filesystem ext4 defau

5. Restart the server. The hard disk error cannot be found during system startup and disappears.

6. Go to the system and view the hard disk

Fdisk-l

Disk/dev/sda: 2000.4 GB, 2000398934016 bytes

255 heads, 63 sectors/track, 243201 cylinders

Units = cylinders of 16065*512 = 8225280 bytes

Sectorsize (logical/physical): 512 bytes/4096 bytes

I/O size (minimum/optimal): 4096 bytes/4096 bytes

Disk identifier: 0x00000000

7. Create a disk partition

Fdisk/dev/sda

8. Create a File System

Command: mkfs/dev/sda1

8. Create a file system mount point:

Command: mkdir/opt

9. Set automatic mounting of the file system

Vim/etc/fstab

Add a row]
/Dev/sda1/opt ext2 defaults 0 0

10. Restart and check disk replacement

Command: Df-k

/Dev/sda1 1922858352 68968 1825113784 1%/opt