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SubjectRe: new harddrive with media error
Date
Thanks for the input of everybody.
i think the drive is broken and i will return it.

Happy gnu year @ all
Alex


Tejun Heo schrieb:
> Al Viro wrote:
>> From the look of it, I'd say that it's size reported by disk being
>> more than what's accessible. Take a look at the block numbers...
>
> How so?
>
> ata1.00: ATA-7, max UDMA/133, 976773168 sectors: LBA48 NCQ (depth 0/32)
>
> sda: Current: sense key: Medium Error
> Additional sense: Unrecovered read error - auto reallocate failed
> end_request: I/O error, dev sda, sector 976751999
> Buffer I/O error on device sda1, logical block 976751936
>
> It seems like a genuine media error to me. Many drives suffer a number
> of media errors in its lifetime. Read errors happen regularly and most
> such errors are corrected by ECC, but sometimes you're just not lucky
> enough. Some of them are real bad sectors while others might be due to
> degraded record quality even when the sector itself isn't necessary bad.
> In most cases, the drive will reallocate the area including the sector
> when you write to it.
>
> Simply rewriting the affected file should solve the problem. Examine
> the result of 'smartctl -d ata -a' just in case. For data of any
> importance, it's always wise to use raid 1 or 5 and backup regularly.
> Both help keeping your data safe in more than one way. Raid re-sync is
> an easy way out of partial media failures and backing up not only gives
> you another copy of the data but gives the drives chance to detect
> degrading area quickly and reallocate before actual read failures begin
> to occur.
>

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