Colima still crashing under network load

[github-nicolas-stadler]

Description

My lima VM crashes as soon as network activity gets a little high (such as a Sabnzbd download starting).

Version

Colima Version: 0.5.0 (also tried with HEAD)
Lima Version: 0.14.2
Qemu Version:

Operating System

• macOS Intel <= 12 (Monterrey)
• macOS Intel >= 13 (Ventura)
• macOS M1 <= 12 (Monterrey)
• macOS M1 >= 13 (Ventura)
• Linux

Output of colima status

No output. The command hangs forever unless I run killall limactl

Reproduction Steps

1. Start colima with the command provided
2. Start a couple of downloads via Sabnzbd/Torrent
3. VM hangs and docker stops responding until I manually kill limactl

Expected behaviour

VM should be able to sustain network activity under some load.

Additional context

My Colima command:

$HOMEBREW_BIN_PATH/colima start --activate \
  --arch aarch64 \
  --cpu 8 \
  --disk 494 \
  --dns 1.1.1.1 \
  --dns 1.0.0.1 \
  --memory 16 \
  --mount $DOWNLOADS_PATH:w \
  --mount $SERVER_PATH:w \
  --mount $SERVER_DATA_PATH:w \
  --mount-type virtiofs \
  --network-driver slirp \
  --runtime docker \
  --ssh-agent \
  --vm-type vz

I tried slirp and gvproxy for the network driver but it doesn't seem to make much of a difference.
Interesting to note, Docker Desktop for Mac had similar issues but they seem to have been fixed in version 4.16 (no more crashes for me since then): docker/for-mac#6530

[abiosoft]

I believe this is specific to the vz driver and related to this issue lima-vm/lima#1200.

I will try to set out some time to troubleshoot the network and probably find an alternative network for the vz driver.

[Curtisjk]

I am facing the same issue when pulling large docker containers.

[AndreasA]

just had the same issue. doing a docker pull / composer install after using scp to retrieve files on a docker volume inside a container. Afterwards colima was nearly useless as starting the instace took forever due to #690 and also composer install never seemed to finish anymore afterwards.

but as mentioned by @abiosoft it is probably a lima and not a colima issue.

[abiosoft]

@AndreasA are you using VZ or QEMU?

[AndreasA]

@abiosoft I am using VZ. so I guess it is probably the lima issue?

[mig8447]

I'm having the exact same issue when using a qemu VM, it doesn't happen with all downloads, but the terminal hangs and I need to kill the ssh process related to the VM and restart colima

Note that this happens only when running inside of a container, building seems to work fine and downloads could be anything from a package to a single file. I haven't been able to determine the exact cause of this. I attributed it to bind mounts and unpacking a file containing too many files (Using docker volumes seems to work fine) but I don't know anymore