Linux system failure repair and troubleshooting

1 mounting the hard drive

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2 Add the hard disk, ready to make a related backup of the file. Back up the MBRseparately,/boot,/etc.

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3 backing up MBR sector data

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4 MBR is bad, use disc boot, repair from backup file. (Analog MBR sector failure)

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5 fix from disc (third)

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6 recovering MBR sector data from backup files

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7 The 446 byte of the analog MBR is bad,

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8 MBR 446 byte bad, use disc boot, direct restore

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9/boot/grub/grub.conf file loss (impersonation)

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Use the disc to boot, cut to the root of the hard disk chroot/mnt/sysimage, Repair from the backup file

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The following commands are fixed:

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hack root password. (Local hard drive boot)

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12/dev/sdb hard Drive File system bad (simulated corruption)

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Repair

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Simulating i - node exhaustion failure

Editor:vim killinonde.sh

#! /bin/bash

I =1

W hile{$i –le ( less than equals ) 8021}

Do ( do )

Touch/date/file$i

IET i++ ( loop )

Done

Run the test program: SH killinode.sh &

Confirm I node occupancy df –I /data

Fixed i - node exhaustion failure

rm-rf/date/file*

This article is from the "rookie" blog, please be sure to keep this source http://10333158.blog.51cto.com/10323158/1713429

Linux system failure repair and troubleshooting