Alex Tomas wrote:
> Eric,
> 
> would you mind to repeat the run and then grab /proc/fs/ext4/<dev>/mb_history?
> 
> thanks in advance, Alex

Sure thing, attached; this is from a 1024x1M run, wound up with 32
fragments, out of order:

First block: 122880
Last block: 491519
Discontinuity: Block 7424 is at 114688 (was 130303)
Discontinuity: Block 15616 is at 106496 (was 122879)
Discontinuity: Block 23552 is at 102400 (was 114431)
Discontinuity: Block 26624 is at 155648 (was 105471)
Discontinuity: Block 33792 is at 147456 (was 162815)
Discontinuity: Block 41472 is at 162816 (was 155135)
Discontinuity: Block 42496 is at 188416 (was 163839)
Discontinuity: Block 50176 is at 180224 (was 196095)
Discontinuity: Block 58368 is at 172032 (was 188415)
Discontinuity: Block 66560 is at 167936 (was 180223)
....

pid 3695 is pdflush, I assume 7634 was the dd itself.

-Eric

Attachment: mb_history.bz2
Description: application/bzip

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