On 9/23/22 15:22, J-P Methot wrote:
Thank you for your reply,
discard is not enabled in our configuration as it is mainly the default
conf. Are you suggesting to enable it?
No. There is no consensus if enabling it is a good idea (depends on
proper implementation among other things). From my experience on Intel
S4610 (during LVM cleanup at OSD reprovisioning) it spends a lot of time
discarding blocks (IIRC an order of magnitude more than Samsung PM883).
So I doubt it would help. Altough it's hard to tell. Maybe it can do
discards more often it does take less per operation, and might be less
impactfull. But this is all speculation. It might be firmware related.
Have all disks the same firmware? Are there disks that never experience
this problem?
Gr. Stefan
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