Hi,
commit 84a9a8cd9d0aa93c17e5815ab8a9cc4c0a765c63
("[libata] Set proper SK when CK_COND is set") breaks
"SMART Status command" ATA command issued by
smartctl -d ata -a /dev/sda at least on FUJITSU MHV2060AH
on ICH6 IDE Controller. The kernel returns -EIO on
HDIO_DRIVE_TASK (0x31e) or HDIO_DRIVE_CMD (0x31f) ioctl,
probably due to RECOVERED_ERROR translated to -EIO.
The regression still exists in v3.9-rc3-218-g0a7e453.
Ancient smartctl like 5.33 give up after such error:
smartctl version 5.33 [i686-pc-linux-gnu] Copyright (C) 2002-4 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF INFORMATION SECTION ===
Device Model: FUJITSU MHV2060AH
Serial Number: NT29T5B2D23C
Firmware Version: 00830096
User Capacity: 60,011,642,880 bytes
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: 6
ATA Standard is: ATA/ATAPI-6 T13 1410D revision 3a
Local Time is: Sat Mar 23 01:55:27 2013 CET
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
SMART Disabled. Use option -s with argument 'on' to enable it.
# strace -x smartctl-5.33 -d ata -a /dev/sda 2>&1 | tail -n 10
write(1, "SMART support is: Available - de"..., 59SMART support is: Available - device has SMART capability.
) = 59
write(1, "SMART support is: Enabled\n", 26SMART support is: Enabled
) = 26
write(1, "\n", 1
) = 1
ioctl(3, 0x31f, 0x7f98a240) = -1 EIO (Input/output error)
write(1, "SMART Disabled. Use option -s wi"..., 63SMART Disabled. Use option -s with argument 'on' to enable it.
) = 63
exit_group(0) = ?
Newer smartctl versions (at least 6.1) just reports an error in such
case and continue:
Error SMART Status command failed: Input/output error
# strace -x smartctl-6.1 -d ata -a /dev/sda 2>&1
...
ioctl(3, 0x31e, 0x7fac798c) = -1 EIO (Input/output error)
write(1, "Error SMART Status command faile"..., 54Error SMART Status command failed: Input/output error
...
On older kernels ioctl() returns 0 instead of -EIO.
Thanks,
Krzysiek
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