check for Buffer I/O Errors

cccc · 08-30-2010, 07:08 AM

hi

Howto check a hard disk for Buffer I/O Errors and fix them using linux Live CD, without damaging OS?

unSpawn · 09-01-2010, 05:02 AM

If it's a plain partition then umount it if mounted then run 'fsck' on it. If the partition is on LVM then you need to enable that layer first with 'vgchange -ay'. OTOH if it's a hardware problem that can't be fixed with running 'badblocks' for relocation then you're probably SOL.

Quote:

Originally Posted by cccc

fix them (..) without damaging OS?

No guarantees there. You make backups regularly, right?

cccc · 09-01-2010, 05:45 AM

Thx, but what means exactly Buffer I/O Error?

unSpawn · 09-01-2010, 06:11 AM

It doesn't really matter what it means. What is important is what is causing it: vermin-infested casings, Mars and Venus colliding, maltreated and dying hardware, badly seated cables, disk surface crapola, driver or kernel b0rkage, you name it.

cccc · 09-05-2010, 12:22 PM

iostat -e and -E should report soft and hard errors.

http://man.cx/iostat%281m%29