Re: Write I/O queue hangup at random on recent Linus' kernels
From: Jens Axboe <axboe@kernel.dk>
Date: 2021-11-25 21:11:25
Also in:
linux-bcache, linux-ext4, linux-nvme
On 11/25/21 2:05 PM, Kenneth R. Crudup wrote:
On Tue, 23 Nov 2021, Jens Axboe wrote:quoted
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:quoted
echo 0 > /sys/block/nvme0n1/queue/wbt_lat_usecquoted
and that will disable writeback throttling on that device.It's been about 48 hours and haven't seen the issue since doing this.
Great, thanks for verifying. From your report 5.16-rc2 has the issue, is 5.15 fine? -- Jens Axboe