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From: Mick <michaelkintzios@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] [OT] Badblocks on my harddisk
Date: Sat, 26 Jul 2014 10:25:44 +0100
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On Saturday 26 Jul 2014 02:49:15 meino.cramer@gmx.de wrote:
> Hi,
>=20
> After running smartctl for an extended offline test I got
> a badblock (information extracted from the report):
>=20
> SMART Self-test log structure revision number 1
> Num Test_Description Status Remaining LifeTime(hour=
s)
> LBA_of_first_error # 1 Extended offline Completed: read failure =
=20
> 90% 14460 4288352511 197 Current_Pending_Sector 0x0032 200=
=20
> 200 000 Old_age Always - 1
>=20
> I found a explanation to map the LBA to a partition here:
> http://smartmontools.sourceforge.net/badblockhowto.html
>=20
> My partition layout is:
> #> sudo fdisk -lu /dev/sda
>=20
> Disk /dev/sda: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors
> Units: sectors of 1 * 512 =3D 512 bytes
> Sector size (logical/physical): 512 bytes / 512 bytes
> I/O size (minimum/optimal): 512 bytes / 512 bytes
> Disklabel type: dos
> Disk identifier: 0x07ec16a2
>=20
> Device Boot Start End Blocks Id System
> /dev/sda1 * 2048 104447 51200 83 Linux
> /dev/sda2 104448 12687359 6291456 82 Linux swap / Solaris
> /dev/sda3 12687360 222402559 104857600 83 Linux
> /dev/sda4 222402560 1953525167 865561304 5 Extended
> /dev/sda5 222404608 232890367 5242880 83 Linux
> /dev/sda6 232892416 442607615 104857600 83 Linux
> /dev/sda7 442609664 652324863 104857600 83 Linux
> /dev/sda8 652326912 862042111 104857600 83 Linux
> /dev/sda9 862044160 1071759359 104857600 83 Linux
> /dev/sda10 1071761408 1281476607 104857600 83 Linux
> /dev/sda11 1281478656 1491193855 104857600 83 Linux
> /dev/sda12 1491195904 1953525167 231164632 83 Linux
> 4288352511 <<< The number reported by smartctl
>=20
>=20
> Following the linked document...
> It seems the bad LBA is not on the checked harddisk.
>=20
> Or (more obvious) I did something wrong...
You are probably comparing different units. The Start and End of fdisk are=
=20
reporting sectors, each sector being 512 bytes. Therefore if the LBA is=20
reported by smartctl in bytes, you have:
4,288,352,511 =C3=B7 512 =3D 8,375,688.5
which would place it within your swap partition.
I would do this:
swapoff /dev/sda2
dd if=3D/dev/zero of=3D/dev/sda2 bs=3D512 conv=3Dnotrunc
mkswap -L swap -c /dev/sda2
swapon /dev/sda2
and hopefully the problem will be gone when you run the next smartctl test.
=2D-=20
Regards,
Mick
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