Date: Wed, 28 Oct 2009 20:55:31 +0100 From: =?ISO-8859-1?Q?Micha=EBl_Gr=FCnewald?= <michaelgrunewald@yahoo.fr> To: Polytropon <freebsd@edvax.de> Cc: freebsd questions general <freebsd-questions@freebsd.org> Subject: Re: Bad sectors: how bad can it be Message-ID: <4AE8A1B3.2070503@yahoo.fr> In-Reply-To: <20091028125215.55ad3801.freebsd@edvax.de> References: <FAF67E79-922C-4F54-8BE1-2C3ED88FD3CD@yahoo.fr> <20091027150519.dcee178a.freebsd@edvax.de> <4AE75293.5020603@yahoo.fr> <20091028125215.55ad3801.freebsd@edvax.de>
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Polytropon wrote:
> On Tue, 27 Oct 2009 21:05:39 +0100, Michaël Grünewald <michaelgrunewald@yahoo.fr> wrote:
>> I have however a question: How do I verify that
>> a hard-drive is accurately working if its firmware will hide the bad
>> sectors as long as possible?
>
> I think the smartctl program from ports/smartmontools is
> a good tool for such verification. As far as I understood,
> it can read internal error logs from the firmware.
Hi, following your suggestion I used smartmon to get access to the SMART
data. I have run an extended offline test (with-t offline I think). The
test reported no error (!) and the bad sectors are now read/writeable
(!!). Is it safe to think the problem is gone?
# smartctl -l selftest /dev/ad10
=== START OF READ SMART DATA SECTION ===
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining
LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed without error 00% 458
-
# 2 Extended offline Aborted by host 70% 456
--
Best regards,
Michaël
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