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List:       linux-ide
Subject:    Device unreadable, no SMART errors found
From:       Andre <nandre () riseup ! net>
Date:       2015-06-12 0:26:54
Message-ID: 20150612002654.GB13708 () tagesuhu-pc ! ookami
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Hi,

I've got a SATA 2.5 inch disk which is currently unreadable, though not
password locked nor presenting any errors during a SMART selftest.

I've tried to access it both using a SATA USB Bridge and a SATA cable
and couldn't do it with neither of them.

I've also tried to reset it using hdparm, blocking DMA and using PIO
(libata.dma=0), blocking ncq (libata.force=noncq), and I still cannot find
out what is happening with this device.

The most meaningful error logs are:

[  126.156761] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[  126.156770] ata1.00: irq_stat 0x40000001
[  126.156777] ata1.00: failed command: READ DMA
[  126.156788] ata1.00: cmd c8/00:08:08:00:00/00:00:00:00:00/e0 tag 17
dma 4096 in
[  126.156788]          res 51/04:08:08:00:00/00:00:00:00:00/00 Emask
0x1 (device error)
[  126.156794] ata1.00: status: { DRDY ERR }
[  126.156798] ata1.00: error: { ABRT }
[  126.159279] ata1.00: configured for UDMA/133
[  126.167330] sd 0:0:0:0: [sda] 
[  126.167335] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[  126.167339] sd 0:0:0:0: [sda]  
[  126.167342] Sense Key : Aborted Command [current] [descriptor]

You can read the full logs of dmesg, hdparm and smartctl at
http://paste.ubuntu.com/11699099/

With udev running the log messages go berserk as it keeps trying to
read the device without success.

I'm running Debian kernel 3.16.7-ckt11-1 and hope someone here will be
able to help me sort this out.

Thanks

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