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Date:      Sun, 7 Jun 2009 13:38:15 +0200 (CEST)
From:      Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To:        "John ." <comp.john@googlemail.com>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: please recommend a disk-exercising program?
Message-ID:  <alpine.BSF.2.00.0906071337390.98647@wojtek.tensor.gdynia.pl>
In-Reply-To: <abc784790906070243t419d8ebbp59a68af23e902004@mail.gmail.com>
References:  <abc784790906070243t419d8ebbp59a68af23e902004@mail.gmail.com>

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> Hello list,
>
> Can anyone please recommend to me a program that will stress-test a
> disk? If it matters, two are connected by firewire, another via usb.
> Filesystem is ufs. I think I have a disk that might be about to fail,
> but it only sometimes errors when under stress. I need to see if it

if it's about to fail then simply read it

dd if=/dev/disk of=/dev/null bs=1m


if it will not - disk is most probably OK.



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