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Martin Steigerwald | 19 Jul 2012 12:48
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Intel SSD 320: erase fail count and test values

Hi!

Regarding some discussion on dm-crypt and trimming on SSD on BTRFS
mailing list I looked at some SMART values¹:

> merkaba:~> smartctl -a /dev/sda
> smartctl 5.43 2012-06-05 r3561 [x86_64-linux-3.5.0-rc7-tp520-toi-3.3-timekeeping+] (local build)
> Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net
> 
> === START OF INFORMATION SECTION ===
> Model Family:     Intel 320 Series SSDs
> Device Model:     INTEL SSDSA2CW300G3
> Serial Number:    […]
> LU WWN Device Id: […]
> Firmware Version: 4PC10362
> User Capacity:    300.069.052.416 bytes [300 GB]
> Sector Size:      512 bytes logical/physical
> Device is:        In smartctl database [for details use: -P show]
> ATA Version is:   8
> ATA Standard is:  ATA-8-ACS revision 4
> Local Time is:    Thu Jul 19 12:28:43 2012 CEST
> SMART support is: Available - device has SMART capability.
> SMART support is: Enabled
> 
> === START OF READ SMART DATA SECTION ===
> SMART overall-health self-assessment test result: PASSED
> […]
> 
> SMART Attributes Data Structure revision number: 5
> Vendor Specific SMART Attributes with Thresholds:
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Martin Steigerwald | 19 Jul 2012 13:18
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Re: Intel SSD 320: erase fail count and test values

Am Donnerstag, 19. Juli 2012 schrieb Martin Steigerwald:
> > SMART Self-test log structure revision number 1
> > Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
> > # 1  Vendor (0xe0)       Completed without error       00%      2443         -
> > # 2  Vendor (0xd8)       Completed without error       00%       271         - 
> > # 3  Vendor (0xd8)       Completed without error       00%       271         -
> > # 4  Vendor (0xa8)       Completed without error       00%       324         -
> >
> > 
> >
> > 0xd8 is a long test, 0xa8 is a short test. Don´t know about 0xe0.
> > Seems that smartctl does not know this test numbers yet.

This numbers appear to be complete guess work.

After two -t short and one -t long – the last one still in progress
although smartctl said it would take only one minute - I got:

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Vendor (0x78)       Completed without error       150%      2444         -
# 2  Reserved (0x88)     Completed without error       00%      2444         -
# 3  Vendor (0x90)       Completed without error       00%      2444         -
# 4  Vendor (0xe0)       Completed without error       00%      2444         -
# 5  Vendor (0xd8)       Completed without error       00%       271         -
# 6  Vendor (0xd8)       Completed without error       00%       271         -
# 7  Vendor (0xa8)       Completed without error       00%       324         -

Remaining 150% also doesn´t look correct.
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