[Techtalk] Unknown computer error

[rudy at grumpydevil.homelinux.org]

Fsck only checks filesystem consistency. It does not check for bad blocks, or read errors inside files. You are getting read errors from the disk. And the disk informs you it is a media error, in other words the disk firmware cannot get the data from the platter. 

A modern disk has at least one cylinder worth of spare blocks to use as spare, which is uses to replace blocks giving problems. As the disk is apparently generating a lot of errors, it seems to be out of those.

If you want more info, run smartctl --all (from memory) anf look at the output, especialky remapped blocks

Cheers

Rudy (from tablet)

On 28 April 2015 11:49:27 CEST, David Sumbler <david at aeolia.co.uk> wrote:
>On Mon, 2015-04-27 at 23:03 -0400, R. Daneel Olivaw wrote:
>> Hi David,
>> >
>> > ata 3.00: status { DRDY ERR }
>> > ata 3.00: error { UNC }
>> > ata 3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
>> > ata 3.00: BMDMA stat 0x65
>> > ata 3.00: failed commadn: READ DMA EXT
>> > ata 3.00: cmd 25/00:08:68:35:55/00:00:30:00:00/e0 tag 0 dma 4096 in
>> >           res 51/40:04:6c:35:55/40:00:30:00:00/00 Emask 0x9 (media
>> > error)
>> > 
>> 
>> Your symptoms and this final output confirms: your drive is almost
>dead.
>> 
>> I'd give spinrite a try in order to clone the disk to a new one
>without
>> loosing too much data (non-free, but saved several drives for me in
>the
>> past).
>> Else, dd_rescue can help copying the readable blocks off to another
>device.
>> 
>> R. Daneel Olivaw,
>> The Human Robot Inside.
>
>I don't understand this.  At Linda's suggestion, and in view of Rudy
>and
>Daniel's opinions, I booted the computer using a Ubuntu "live" disc,
>and
>ran fsck on my /root partition and on my /home partition.  Both
>reported
>"clean".
>
>But having done a normal reboot, using the system I have just fsck-ed,
>I
>am still getting the reported problem every time I attempt to open a
>LibreOffice file.  Can anyone make possible sense of this?
>
>David
>
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