Bringing over this thread from the old forums.
Dragonfish and Electric Eel mount /opt and /usr among other volumes as ro on boot. It is done to secure the system and make it more immutable. It will require the following changes to get the patch working moving forward.
!!WARNING!!
Doing this is of your own volition and not supported by IXsystems in anyway. You will likely be denied support if you submit a ticket with it enabled. However, it is simple to revert and only a single library is being patched.
You can mess your system up! Make sure to have a fresh configuration and data backup in case you need to restore.
If you are having GPU issues with this installed, make sure to revert and then test the issue you’re having to make sure it’s nothing to do with the patch.
Why?
Nvidia limits the number NVENC encoding sessions to 8 on consumer grade GPU’s. This patch unlocks this number as it’s an artificial limit. This is especially useful in applications like Plex and Jellyfin that can offload encoding from the CPU to the GPU.
See the following reference from Keylase’s repo:
NVENC patch removes restriction on maximum number of simultaneous NVENC video encoding sessions imposed by Nvidia to consumer-grade GPUs.
Scripts
Post Init
You can run these scripts ad-hoc as well as creating a Post Init script on boot using the advanced settings. Running this script will require root or sudo rights on the system.
Note: Create a
zfsdataset to run the scripts from.
Script for Dragonfish:
#!/bin/bash
if [ ! -d "/tmp/nvidia-patch" ]
then
git clone https://github.com/keylase/nvidia-patch.git /tmp/nvidia-patch \
&& mount -o remount,rw /opt \
&& mount -o remount,rw /usr \
&& bash /tmp/nvidia-patch/patch.sh \
&& mount -o remount,ro /opt \
&& mount -o remount,ro /usr
else
git -C "/tmp/nvidia-patch" pull \
&& mount -o remount,rw /opt \
&& mount -o remount,rw /usr \
&& bash /tmp/nvidia-patch/patch.sh \
&& mount -o remount,ro /opt \
&& mount -o remount,ro /usr
fi
Script for Electric Eel:
Thanks to @sean6541 for the initial script. This one has been modified with a few fixes and converted to bash.
#!/bin/bash
set -x
PATCH_DIR="$PWD"
KEYLASE_GH="https://raw.githubusercontent.com/keylase/nvidia-patch/refs/heads/master/patch.sh"
KEYLASE_SCRIPT="$PATCH_DIR/patch.sh"
# Download latest keylase script
wget -O $KEYLASE_SCRIPT $KEYLASE_GH && \
# Update backup_path
sed -i -r "s,^backup_path=.*,backup_path=\"$PATCH_DIR/libnvidia-encode-backup\",g" "$KEYLASE_SCRIPT" && \
# Add output path if it doesn't exist
[[ ! -f $PATCH_DIR/patched-lib ]] && mkdir -p "$PATCH_DIR/patched-lib"
# Patch libs
PATCH_OUTPUT_DIR="$PATCH_DIR/patched-lib" bash "$KEYLASE_SCRIPT" && \
# Get current mounted nvidia libs
NV_MOUNTED_LIBS=`awk '/libnvidia/ { print $2 }' < /proc/mounts`
cd "$PATCH_DIR/patched-lib" && \
# Mount patched libs
for file in * ; do
suffix="${file##*.so}"
name="$(basename "$file" "$suffix")"
# Check if old libraries are mounted
# and unmount if so, else continue
# mounting.
if [[ ! -z $NV_MOUNTED_LIBS ]]; then
i=0
for NV_LIB in ${NV_MOUNTED_LIBS[$i]} ; do
((i++))
umount $NV_LIB
NV_LIB_BASE=`basename $NV_LIB`
mount --bind "$NV_LIB_BASE" "$NV_LIB"
done
else
mount --bind "$file" "/usr/lib/x86_64-linux-gnu/$file"
fi
done && \
# Link libs
ldconfig
Reverting
Dragonfish
Run the following command to revert the patch and remove all files from the server.
sudo mount -o remount,rw /opt \
&& sudo mount -o remount,rw /usr \
&& sudo bash /tmp/nvidia-patch/patch.sh -r \
&& sudo rm -r /opt/nvidia \
&& sudo mount -o remount,ro /opt \
&& sudo mount -o remount,ro /usr \
&& sudo rm -rf /tmp/nvidia-patch
Electric Eel:
NV_LIB=`awk '/libnvidia/ { print $2 }' < /proc/mounts` && sudo umount $NV_LIB
If you created a Post Init script, delete that startup script from advanced settings otherwise you’ll be patched again on boot.
Changelog
01.01.2025
- Added Electric Eel support
- Removed manual steps