[pve-devel] [RFC pve-kernel] add disable_write_zeroes quirk for Crucial T700 and T705

[Thomas Lamprecht]

Am 19.03.25 um 21:33 schrieb Stoiko Ivanov:
> The patch seems to indeed improve the performance of BLKZEROOUT and
> other operations that use write_zeroes for both drives.
> 
> Tested with LVM-thick LVs on both drives, as LVM seems to pass-through the
> write_zeroes_max_bytes property (going by the output of:
> /sys/block/nvmeXn1/queue/write_zeroes_max_bytes).
> 
> however as the T705 drives in our pool are all in use the test there was
> limited to a rather small LV of 350M (still the change was from 5
> seconds to 0.5 seconds).
> 
> Signed-off-by: Stoiko Ivanov <s.ivanov at proxmox.com>
> ---
> sending as RFC, as I'm not certain if that approach makes sense in
> general, or if maybe other drives are also affected (or if some other
> sizes of T705, T700 are not affected).

not sure how much anybody here can comment on that, maybe send it upstream
and CC a relevant maintainer, ideally one working for crucial/micron.