Re: Loud "pop" coming from hard drive on reboot

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Tejun Heo wrote:
Mark Lord wrote:
..
It would be nice if somebody who can hear the "pop" would also test this,
as it will confirm that this is a complete fix for the problem.

You'll probably be able to here the "pop" on sleep-to-disk.

My "pop" drives are busy elsewhere right now.

The system I do have to test with has a "pop",
but that's from the speakers not the drive.

However, the S.M.A.R.T. data was also shown earlier to provide
a record of the unnecessary wear and tear.

Here it is from two hibernates (Linux "suspend-to-disk") before patching:

-  4 Start_Stop_Count        0x0032   099   099   020    Old_age   Always       -       1711
+  4 Start_Stop_Count        0x0032   099   099   020    Old_age   Always       -       1712
..
- 12 Power_Cycle_Count       0x0032   099   099   020    Old_age   Always       -       1051
+ 12 Power_Cycle_Count       0x0032   099   099   020    Old_age   Always       -       1053
..
-192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       126
-193 Load_Cycle_Count        0x0032   015   015   000    Old_age   Always       -       170404
+192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       128
+193 Load_Cycle_Count        0x0032   015   015   000    Old_age   Always       -       170405

With the patch applied, I don't see *any* new activity in those S.M.A.R.T.
attributes over multiple hibernates (Linux "suspend-to-disk").

Next up, I'll try a few shutdowns and see.

But we should still get Stephen Clark or one of the other reporters
to confirm it on their systems.

-ml

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