do these diagnostics tell me my MMC card is toast?

Robert P. J. Day rpjday at crashcourse.ca
Sun Mar 29 13:23:21 UTC 2009


On Sat, 28 Mar 2009, max bianco wrote:

> On Sat, Mar 28, 2009 at 3:18 PM, Robert P. J. Day <rpjday at crashcourse.ca> wrote:
> >
> >  inserting a rocketfish 2g SD card into the reader in my fedora 9
> > laptop generates buckets of:
> >
> > Mar 28 15:16:50 localhost kernel: end_request: I/O error, dev mmcblk0, sector 8
> > Mar 28 15:16:50 localhost kernel: end_request: I/O error, dev mmcblk0, sector 16
> > Mar 28 15:16:50 localhost kernel: end_request: I/O error, dev mmcblk0, sector 24
> > Mar 28 15:16:50 localhost kernel: mmcblk0: error -110 transferring data
> > Mar 28 15:16:50 localhost kernel: end_request: I/O error, dev mmcblk0, sector 0
> > Mar 28 15:16:50 localhost kernel: mmcblk0: error -110 transferring data
> > Mar 28 15:16:50 localhost kernel: end_request: I/O error, dev mmcblk0, sector 0
> > Mar 28 15:16:50 localhost kernel: end_request: I/O error, dev mmcblk0, sector 8
> > Mar 28 15:16:50 localhost kernel: end_request: I/O error, dev mmcblk0, sector 16
> > Mar 28 15:16:50 localhost kernel: end_request: I/O error, dev mmcblk0, sector 24
> > Mar 28 15:16:50 localhost kernel: mmcblk0: error -110 transferring data
> > Mar 28 15:16:50 localhost kernel: end_request: I/O error, dev mmcblk0, sector 0
> > ... etc etc ...
> >
> >  should i just assume this card is toast and get another one?  or
> > might there be another reason for the above?
> >
> > rday
> > --
>
> I had a flash drive that I thought was toast, it gave intermittent
> errors when I tried to write to it which got progressively worse until
> one day I just couldn't write to it anymore. I let it collect dust for
> a week then decided on whim to format the thing and its been working
> fine ever since. No problems since, I never did figure out why it
> happened. In hindsight the only thing I can think of is maybe  that
> week there was a kernel update that fixed a bug or it might have been
> that I swapped it between nix and doze boxes a lot. Don't do that
> anymore but its all supposition since I don't have any facts. This as
> you may have guessed is just my long winded way of saying format it
> for giggles and see what happens.

  i reformatted the SD card several times, with totally random results
(inability to mount, then suddenly mountable, then not mountable,
etc.)  finally gave up on it, spent $12 on a new 2G card and it seems
to work fine.  i'm just going to assume that the card was borked.

rday
--
========================================================================
Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry:
    Have classroom, will lecture.

http://crashcourse.ca                          Waterloo, Ontario, CANADA
========================================================================


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