Re: Write I/O queue hangup at random on recent Linus' kernels
From: Kenneth R. Crudup <hidden>
Date: 2021-11-25 21:07:21
Also in:
linux-bcache, linux-ext4, linux-nvme
On Tue, 23 Nov 2021, Jens Axboe wrote:
It looks like some missed accounting. You can just disable wbt for now, would be a useful data point to see if that fixes it. Just do:
echo 0 > /sys/block/nvme0n1/queue/wbt_lat_usec
and that will disable writeback throttling on that device.
It's been about 48 hours and haven't seen the issue since doing this. -Kenny -- Kenneth R. Crudup / Sr. SW Engineer, Scott County Consulting, Orange County CA