[Smartmontools-support] Re: "Missing attribute 255"

[<0...@pe...>]

On Tue, 29 Oct 2002, Bruce Allen wrote:

> How about first trying the latest release?  I added some code
> especially for you, to check for consistent attribute
> numbering in both smartctl and smartd.  So please try both I
> also found and fixed a programming blunder on my part in
> smartd (a varargs function with an extra argument that should
> not have been there). This might have led to my over-writing
> something on the stack.  It's worth a shot.  If this doesn't
> find & fix the problem, I'll send you some instructions on
> how to run the code under a debugger.

I tried, but as you can see I reported the miscompilations,
which don't occur with -Os. I don't know what's causing them,
but think it'd have run into more troubles if the compiler was
that bad, as I compiled XFree86 and Mozilla with -O3
-march=athlon -mcpu=athlon, and everything else uses -O2.

With 5.0-22 (mis)compiled with -O2, smartd prints:

Oct 29 21:10:05 pervalidus smartd: smartd version 5.0-22 - S.M.A.R.T. Daemon.
Oct 29 21:10:05 pervalidus smartd: Home page is http://smartmontools.sourceforge.net/
Oct 29 21:10:05 pervalidus smartd: Using configuration file /etc/smartd.conf
Oct 29 21:10:05 pervalidus smartd: Device: /dev/hda, opened
Oct 29 21:10:05 pervalidus smartd: Device: /dev/hda, is SMART capable. Adding to "monitor" list.
Oct 29 21:10:05 pervalidus smartd: Started monitoring 1 ATA and 0 SCSI devices

I have /dev/hda -A -a in /etc/smartd.conf.

So, apparently 255 is gone. Or does -a hides it ?

smartctl still shows the miscompilations:

+See vendor-specific Attribute list for marginal Attributes.

SMART Attributes Data Structure revision number: 24416

Yes, this number changes when miscompiled.

  5 Reallocated_Sector_Ct   0x0008   133   005   020    Old_age  In_the_past 847118427
  5 Reallocated_Sector_Ct   <== Data Page      |  WARNING: PREVIOUS ATTRIBUTE HAS TWO
  1 Raw_Read_Error_Rate     <== Threshold Page |  INCONSISTENT IDENTITIES IN THE DATA

SMART Error Log Version: 3
No Errors Logged

SMART Self-test log, version number 3
Warning - structure revision number does not match spec!
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Off-line            Completed                     00%     35584

Compiled with -Os:

-See vendor-specific Attribute list for marginal Attributes.

SMART Attributes Data Structure revision number: 11

  1 Raw_Read_Error_Rate     0x0029   100   253   020    Pre-fail     -       0
  3 Spin_Up_Time            0x0027   066   066   020    Pre-fail     -       4287
  4 Start_Stop_Count        0x0032   100   100   008    Old_age      -       24
  5 Reallocated_Sector_Ct   0x0033   100   100   020    Pre-fail     -       0
...

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log, version number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Short off-line      Completed                     00%      4924

Definitely a miscompilation.

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