Re: Long test taking ages

On 2016-10-08 20:44, Gandalf Corvotempesta wrote:
> 2016-10-08 20:17 GMT+02:00 Carlos E. R. <[email protected]>:
>> I'm not familiar with "-x", I normally use "-a". But let me guess. It
>> may be related to the Current_Pending_Sector and Offline_Uncorrectable
>> lines in the table of smart attributes.
> 
> I don't have them in SAS. smart for SAS is different from SMART for SATA
> 
>> If this is what happens to you, it would also explain your problem. When
>> the disk hits a bad sector, the system tries several times to read it,
>> forcing everything else to wait. Thus other computers in your
>> installation would be fine, no bad sectors.
> 
> SAS has a "grown list" that should indicate the number of remapped sectors.
> In my case, the grown list is 0, but I still have some of that strings
> in "-x" output
> and I don't know the meaning.

Could you paste the result here? Look at these values in your case:

  5 Reallocated_Sector_Ct   PO--CK   100   100   010    -    0
197 Current_Pending_Sector  -O--C-   100   100   000    -    0
198 Offline_Uncorrectable   ----C-   100   100   000    -    0

Ah, wait. You said that SAS don't have these values? I don't have any
SAS disk. I am a professional, but I don't keep any installation
currently. Mostly at home. Sorry I can't help interpreting SAS output.

My guess is that your hardware has detected the presence of bad sectors,
and is waiting for chance to relocate them. This happens on write
attempts, or perhaps via special command that is what the text you
posted says.

There must be some value that counts the sectors in relocation waiting
state.

The problem is when something tries to read any of those bad sectors,
like when testing. The entire computer has to wait. Big slowdowns.


You need to evaluate how many bad sectors are in that disk, find out if
the figure is stable or growing, how old (thousand of hours), then
decide to keep the disk or replace. A few sectors are normal in any
disk, but not if the figure keeps increasing. Some people replace disk
at the first error. I think that's excessive, but depends on how
important are the data and the purchase power you have.


> I've opened a thread on smartmon mailing list but nobody is answering.

You mean this list? I'm new here. I jumped into the thread seeing there
were no answers. It seems few people answering.


-- 
Cheers / Saludos,

		Carlos E. R.
		(from 13.1 x86_64 "Bottle" at Telcontar)

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