id = 2388
title = "NVMe SQ processing gets stuck when IO queue size is small (for example 4)"
state = "closed"
created_at = "2024-06-12T21:21:02.609Z"
closed_at = "2024-11-08T14:46:11.812Z"
labels = ["block:NVMe"]
url = "https://gitlab.com/qemu-project/qemu/-/issues/2388"
host-os = "Fedora Linux 37 (Workstation Edition)"
host-arch = "x86_64"
qemu-version = "QEMU emulator version 9.0.50 (v9.0.0-1388-g80e8f06021-dirty)"
guest-os = "OSv"
guest-arch = "x86_64"
description = "n/a"
reproduce = """1. Get OSv repo with the NVMe driver and build OSv with the 'Hello World' example:
```
git clone https://github.com/wkozaczuk/osv.git
cd osv
git checkout nvme_refined
git submodule update --init --recursive 
./scripts/setup.py
./scripts/build image=native-example fs=zfs -j$(nproc)
```
2. Run OSv with NVme on and point to your version of QEMU built with tracing enabled:
```
./scripts/run.py --qemu-path /home/wkozaczuk/projects/qemu/build/qemu-system-x86_64 --nics=0 --nvme -c 1  --pass-arg "--trace pci_nvme_*"
```"""
additional = """I am adding both full QEMU logs with NVMe tracing enabled and diff of my changes to QEMU code to add extra logging."""