From: Mathias Buren <mathias.buren@gmail.com>
To: vincent <hanguozhong@meganovo.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: raid5:bad sectors after lost power
Date: Thu, 13 Sep 2012 16:57:35 +0800 [thread overview]
Message-ID: <50519FFF.5010809@gmail.com> (raw)
In-Reply-To: <50519cb3.21bf440a.60ca.ffffa83b@mx.google.com>
On 13/09/12 16:43, vincent wrote:
> Hi everyone:
> I have a problem about raid5.
> I created a raid5 with the command “mdadm –Cv --chuck=128 /dev/md0 –
> l5 –n4 sd[abcd]” for write performance test, the capacity of each disk is
> 2TB. After the array was created, I modified the strip_catch_size of it to
> 2048.
> Then I used a program to parallel write 150 files to the array, the
> speed of each is 1MB/s. Unfortunately, the electricity went off suddenly at
> the time. when I turn on the device again, I found the raid5 is in recovery.
> When the progress of the recovery went up to 98%, there was a write
> error occurred. I used “smartctl –A /dev/sd*” to check the heath status
> of these disks. I found the “RAW_VALUE” of the attribute whose name was
> “Current_Pending_Sector” of sda and sdb were 1.
> Then I used “HDD_Regenerator” to check if there were bad blocks in the
> disks. The result of the output indicated that sda and sdb did have a bad
> sector.
> These disks were used for the first time after purchased. Is it normal
> to have bad sectors? Could you please help me?
>
>
> --
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>
RMA the HDDs (or return to vendor), they are not healthy.
// Mathias
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next prev parent reply other threads:[~2012-09-13 8:57 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-13 8:43 raid5:bad sectors after lost power vincent
2012-09-13 8:57 ` Mathias Buren [this message]
2012-09-13 10:48 ` Mikael Abrahamsson
2012-09-13 20:00 ` Peter Grandi
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