Is disk really bad if mkfs.ext4 -c -c reports errors?

[Rashkae]

On 17-01-11 11:46 AM, Chris Green wrote:

>
>      Testing with pattern 0x55:  67.02% done, 23:57:16 elapsed. (0/78947/0 errors)
>


Very interesting that you complete one pass with no errors, then on the 
second pass, start getting large number of *write* errors, with no 
indication of a problem in SMART.

I would say, off the top of my head, this is indicative of an I/O 
problem on the Motherboard, but it doesn't rule out either the drive or 
cable...

Unfortunately, I don't know of any easy way to diagnose a failure like 
this.  I would have to separate the suspect drive from the suspect 
computer and test them independently.  That is, put the drive in a 
different computer and re-run the test.  At the same time, put a 
different drive in the existing computer and format it there.

And indeed, this could be a cable / loose connection problem.  If the 
problem goes away when you move the drive around, I would replace the 
SATA cable just as a caution.  If the problem can no longer be 
replicated when the drive has been moved, I would use *neither* in a 
critical production capacity.