ata error codes

ata error codes

[Raz]

Mr Garzik Hello
ata errors are some times cryptic. I am refering to this line, in the
ata_qc_timeout which holds lots of information.
printk(KERN_ERR "ata%u: command 0x%x timeout, stat 0x%x host_stat 0x%x\n",
 ap->id,
 qc->tf.command,
 drv_stat,
 host_stat)

These errors varries , and many times SMART cannot help. Is there a
repository for these error codes, (  ata_dump_status isn't enough ).
Is there an API to get these error codes translated to human readable format ?
thank you
-- 
Raz

Re: ata error codes

[Tejun Heo]

Raz wrote:
> Mr Garzik Hello
> ata errors are some times cryptic. I am refering to this line, in the
> ata_qc_timeout which holds lots of information.
> printk(KERN_ERR "ata%u: command 0x%x timeout, stat 0x%x host_stat 0x%x\n",
>  ap->id,
>  qc->tf.command,
>  drv_stat,
>  host_stat)
> 
> These errors varries , and many times SMART cannot help. Is there a
> repository for these error codes, (  ata_dump_status isn't enough ).
> Is there an API to get these error codes translated to human readable format ?
> thank you

Those values are directly from hardware registers and can be decoded
with information from ATA and SFF specs.  It could be nice to have
decoded strings but I'm not too sure.  Even when decoded, they're pretty
cryptic and don't carry too much information by themselves.

-- 
tejun

Re: ata error codes

[Raz]

I saw in Jeff Garzik the link to http://www.t13.org/ for the ata 's
documentation. Unfortunately , I do seem to be able to correlate the
errors in the specs to the errors appear in dmesg. If you would be
kind to direct me a little, I would write a code that dumps more
information, something like ata_error err = <error code > utility.

thank you

On Jan 21, 2008 10:04 AM, Tejun Heo <htejun@gmail.com> wrote:
>
> Raz wrote:
> > Mr Garzik Hello
> > ata errors are some times cryptic. I am refering to this line, in the
> > ata_qc_timeout which holds lots of information.
> > printk(KERN_ERR "ata%u: command 0x%x timeout, stat 0x%x host_stat 0x%x\n",
> >  ap->id,
> >  qc->tf.command,
> >  drv_stat,
> >  host_stat)
> >
> > These errors varries , and many times SMART cannot help. Is there a
> > repository for these error codes, (  ata_dump_status isn't enough ).
> > Is there an API to get these error codes translated to human readable format ?
> > thank you
>
> Those values are directly from hardware registers and can be decoded
> with information from ATA and SFF specs.  It could be nice to have
> decoded strings but I'm not too sure.  Even when decoded, they're pretty
> cryptic and don't carry too much information by themselves.
>
> --
> tejun
>



-- 
Raz

Re: ata error codes

[Tejun Heo]

Raz wrote:
> I saw in Jeff Garzik the link to http://www.t13.org/ for the ata 's
> documentation. Unfortunately , I do seem to be able to correlate the
> errors in the specs to the errors appear in dmesg. If you would be
> kind to direct me a little, I would write a code that dumps more
> information, something like ata_error err = <error code > utility.

What do you mean by 'utility'?  A separate program to interpret kernel
error message?

-- 
tejun