Re: SMART Attribute Data Structure error - how to repair?

Am 31.08.2016 um 22:02 schrieb Christian Franke:
> Hans Lederer wrote:
>> I've got here three 4 TB HGST HUS724040ALA640 drives. They are mounted
>> in ICY Box external cases, connected via e-SATA, LUKS-encrypted. They
>> are used once a week for offline backups and perform fine for years now.
>>
>> Just today I've noticed that all three of them seem to have invalid
>> SMART data like below. I'm quite sure that they were normally readable
>> at beginning.
>>
>> What might have happened? Surely SMART data is not encrypted by LUKS?
> 
> This is likely unrelated to LUKS or the disk itself.
> 
> 
>> Is there a way to repair/rewrite the SMART data so that they at least
>> start over fresh?
> 
> No.
> 
> If possible, please try whether the problem persists if an affected 
> disks is connected to another machine or via another interface (USB, 
> SATA) to same machine.
> 
> Here is a recent report about a similar problem with an external 
> USB/eSATA case:
> https://www.smartmontools.org/ticket/719
> 

Thank you Christian,

you're right: the bridge chip seems to be the problem, my ICY BOX uses
that same Prolific PL2773 —

• Connecting via the ICY BOX'x e-SATA:  SMART unreadable.
dmesg says —
ata6: exception Emask 0x10 SAct 0x0 SErr 0x4050000 action 0xe frozen
ata6: irq_stat 0x00400040, connection status changed
ata6: SError: { PHYRdyChg CommWake DevExch }
ata6: hard resetting link
ata6: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata6.00: ATA-8: HGST HUS724040ALA640, MFAOAA70, max UDMA/133
ata6.00: 7814037168 sectors, multi 16: LBA48
ata6.00: configured for UDMA/133
ata6: EH complete

• Connecting via the ICY BOX'x USB3:  SMART perfectly readable and ok.
dmesg says —
usb 3-1: New USB device found, idVendor=067b, idProduct=2773
usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 3-1: Product: USB-SATA Bridge
usb 3-1: Manufacturer: Prolific Technology Inc.
usb 3-1: SerialNumber: PROLIFICMP000000002

• Connecting the naked drive directly via e-SATA:  readable.
dmesg says —
ata6: exception Emask 0x10 SAct 0x0 SErr 0x4040000 action 0xe frozen
ata6: irq_stat 0x00000040, connection status changed
ata6: SError: { CommWake DevExch }
ata6: hard resetting link
ata6: link is slow to respond, please be patient (ready=0)
ata6: COMRESET failed (errno=-16)
ata6: hard resetting link
ata6: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata6.00: ATA-8: HGST HUS724040ALA640, MFAOAA70, max UDMA/133
ata6.00: 7814037168 sectors, multi 0: LBA48 NCQ (depth 31/32), AA
ata6.00: configured for UDMA/133
ata6: EH complete


-- 
Thanks again,  Hans


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