Re: Drive errors in boot logs, but NOT in smartctl, and still runs ok after completing boot. What's wrong with this drive?

The problem is the data is getting corrupted in transit, some of the time.
Kind of like a static phone call. Usually you can make out what they are
saying, but not always. The CRC is catching those errors and the data is
being re-transmitted. Hence if the problem is intermittent, the drive will
still work, although slower.

>
>
> On Sat, Apr 29, 2017, at 11:25 AM, Robert S wrote:
>> Number 199 is indicating a problem. *USUALLY* it's cable related. Try
>> replacing the sata cable and see if the raw value quits climbing. If you
>> don't feel like playing with it, you can also change the sata port it's
>> plugged into on the motherboard (or add-in card).
>
> Wow. Nice call, I woulda never have found that!  Never thought that a
> cable problem would allow the drive to boot and work afterwards ...
>
> Swapped  the cable, and :
>
> dmesg | egrep -i "ata2|ata-2"
> 	[    2.771065] ata2: SATA max UDMA/133 abar m1024@0xf9fff800 port
> 0xf9fffa80 irq 22
> 	[    3.259806] ata2: softreset failed (device not ready)
> 	[    3.262990] ata2: applying PMP SRST workaround and retrying
> 	[    3.439709] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> 	[    3.455067] ata2.00: ATA-8: SAMSUNG HD103SJ, 1AJ10001, max UDMA/133
> 	[    3.458119] ata2.00: 1953525168 sectors, multi 16: LBA48 NCQ (depth
> 31/32), AA
> 	[    3.467512] ata2.00: configured for UDMA/133
>
> Thanks a LOT!
>
> p.s. that "applying PMP SRST workaround and retrying" appears to be the
> kernel successfully working around a problem becuase of
> "CONFIG_SATA_PMP=y" in the kernel config.  Not sure that I can do anything
> abt that without compiling the kernel with a different option.  Or whether
> I need to.
>
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