topic check for badblocks without damage the system in Operating System - Linux

check for badblocks without damage the system

'chris' — Sat, 18 Oct 2008 00:06:16 GMT

hi

howto check for badblocks ?
is it possible to start for example:

# badblocks -vs /dev/hda

on the running linux without damage the system ?

Re: check for badblocks without damage the system

rajv — Sat, 18 Oct 2008 05:27:46 GMT

Hi,

you can run fsck to check and fix the bad blocks.

#fsck -y /dev/hda

you can run this single usermode.

wtih out -y option system will ask want fix or not(y/n).

Re: check for badblocks without damage the system

'chris' — Sat, 18 Oct 2008 10:58:12 GMT

thx, but the disk should be unmouted before running fsck.

Re: check for badblocks without damage the system

Ivan Ferreira — Sun, 19 Oct 2008 00:57:59 GMT

badblocks should be called from fsck using the -c option. And yes, you must umount the file system. You don't have another option.

Re: check for badblocks without damage the system

Mike Stroyan — Sun, 19 Oct 2008 16:24:27 GMT

Many disks support SMART self test. You can use smartctl to start a non-destructive bad blocks self test in the background even while a disk is in use.
See "man smartctl" and http://www.linuxjournal.com/article/6983 for more information about smartctl.