# Syncthing 2.0 on QNAP NAS
**URL:** https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810
**Category:** Support
**Created:** [August 14, 2025, 4:27pm UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810 "2025-08-14T16:27:35Z")
**Posts on this page:** 20
**Page:** 1
### Author:  [@maxmonz](https://forum.syncthing.net/u/maxmonz)
#### Post date: [August 14, 2025, 4:27pm UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/1 "2025-08-14T16:27:35Z")
Hello,
I have a QNAP NAS and I installed syncthing from the package manager (myQNAP repository).
The actual version is 1.3.0.
Today I noticed in the syncthing administrative interface the button to upgrade it to the latest 2.0.
I tried but something went wrong and the application couldn’t restart well. I think the upgrade procedure is not compatible with the installed package and the way qnap installed it.
Any idea or advice?
Thanks
Max
---
### Author:  [@Moisie](https://forum.syncthing.net/u/Moisie)
#### Post date: [August 14, 2025, 8:12pm UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/2 "2025-08-14T20:12:09Z")
Hello Max:
I’ve just been looking at exactly the same thing today!
The problem lies in the launch script - syncthing.sh - which needs editing to update it for the new double-dash arguments. Once this is done, you should be good.
To do this, you’ll need to SSH into the Qnap and find the syncthing.sh file - for me it was in `/share/ZFS531_DATA/.qpkg/syncthing/syncthing.sh` - but I don’t know if the early parts of this file path are different for different installations.
Hope that helps…
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### Author:  [@lgsancho](https://forum.syncthing.net/u/lgsancho)
#### Post date: [August 14, 2025, 8:22pm UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/3 "2025-08-14T20:22:32Z")
What exactly needs editing?
Thanks!
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### Author:  [@maxmonz](https://forum.syncthing.net/u/maxmonz)
#### Post date: [August 14, 2025, 8:23pm UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/4 "2025-08-14T20:23:02Z")
Hi,
thanks for your reply but what exactly should be edited?
You mean
/usr/bin/sudo -u $USER $QPKG\_ROOT/syncthing -gui-address=0.0.0.0:8384 -home=$HOME -logfile=$HOME/synthing.log &
that should be
/usr/bin/sudo -u $USER $QPKG\_ROOT/syncthing –gui-address=0.0.0.0:8384 –home=$HOME –logfile=$HOME/synthing.log &
is that?
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### Author:  [@tomasz86](https://forum.syncthing.net/u/tomasz86)
#### Post date: [August 14, 2025, 8:29pm UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/5 "2025-08-14T20:29:49Z")
Your formatting has been messed up by the forum software (which merged double `--` dashes into en `–` dashes), but basically you need to change all leading single `-` dashes to double `--` dashes, e.g. `--home` instead of `-home`, etc.
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### Author:  [@maxmonz](https://forum.syncthing.net/u/maxmonz)
#### Post date: [August 14, 2025, 8:43pm UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/6 "2025-08-14T20:43:34Z")
I edited the script and tried the upgrade again but synthing.log shows only the server is shutting down but not restarting
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### Author:  [@maxmonz](https://forum.syncthing.net/u/maxmonz)
#### Post date: [August 14, 2025, 8:47pm UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/7 "2025-08-14T20:47:10Z")
Ok i stopped the application from the App Center and started again and it works. Thank you
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### Author:  [@bryankitts](https://forum.syncthing.net/u/bryankitts)
#### Post date: [August 15, 2025, 10:21am UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/8 "2025-08-15T10:21:52Z")
Not sure if I have exactly the same script (same name but different capitalisation). Mine had the same command (and fix), but also had an earlier line `syncthing -upgrade` which I changed to `syncthing upgrade`.
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### Author:  [@maxmonz](https://forum.syncthing.net/u/maxmonz)
#### Post date: [August 15, 2025, 4:11pm UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/9 "2025-08-15T16:11:06Z")
I noticed there is also a `syncthing -upgrade`and I didn’t change it. I don’t know if it’s correct or the dash should be removed or it needs a double dash. I just know that the upgrade (from the web dashboard) worked but the server didn’t restart as expected. The log showed syncthing shutdown but not a restart. So i stopped the application from App Center (although it was already stopped) and then I restarted it.
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### Author:  [@USRFSledge](https://forum.syncthing.net/u/USRFSledge)
#### Post date: [August 15, 2025, 6:45pm UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/10 "2025-08-15T18:45:21Z")
Yes, I had the same - running on my 15 year old ancient QNAP TS-559 Pro II. I looked up where `syncthing.sh` in `/etc/init.d/` was referring to. For me it was `/share/MD0_DATA/.qpkg/syncthing` and on line 105 I changed
`/sbin/daemon_mgr syncthing start “$DAEMON -home ${QPKG_DIR}/config $LOGSY &”` into `/sbin/daemon_mgr syncthing start “$DAEMON --home ${QPKG_DIR}/config $LOGSY &”`
---
### Author:  [@mupsje](https://forum.syncthing.net/u/mupsje)
#### Post date: [August 18, 2025, 7:50am UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/11 "2025-08-18T07:50:55Z")
I had the same Problem.
QNAP TS-431P3
I solved it with next code.
```bash
#!/bin/sh
CONF=/etc/config/qpkg.confQPKG_NAME=“SyncThing”QPKG_ROOT=$(/sbin/getcfg $QPKG_NAME Install_Path -f ${CONF})export QNAP_QPKG=$QPKG_NAME
export SHELL=/bin/shexport LC_ALL=en_US.UTF-8export LANG=en_US.UTF-8export LC_CTYPE=en_US.UTF-8export USER=admin
export HOSTNAMEexport QPKG_ROOT QPKG_NAMEexport PATH=$QPKG_ROOT/bin:$PATHexport HOME=$QPKG_ROOT
export USER=syncthingexport PIDF=/var/run/syncthing.pidexport LOGFILE=$HOME/syncthing.log
case “$1” instart)ENABLED=$(/sbin/getcfg $QPKG_NAME Enable -u -d FALSE -f $CONF)if [“$ENABLED” != “TRUE”]; thenecho “$QPKG_NAME is disabled.”exit 1fi
/bin/ln -sf $QPKG_ROOT /opt/$QPKG_NAME
if getent passwd $USER > /dev/null 2>&1; then
echo "User $USER exists"
else
adduser $USER -g "Linux User,,," -h /tmp -D -S -G everyone
touch $QPKG_ROOT/test_user
chown $USER $QPKG_ROOT
fi
cd /share
$QPKG_ROOT/syncthing upgrade
echo "Starting Syncthing..." >> $LOGFILE
/usr/bin/sudo -u $USER $QPKG_ROOT/syncthing \
--gui-address 0.0.0.0:8384 \
--home="$HOME" \
--logfile="$LOGFILE" >> $LOGFILE 2>&1 &
echo $! > $PIDF
sleep 15
;;
stop)if [-f $PIDF]; thenkill -9 $(cat $PIDF) > /dev/null 2>&1 || truerm -f $PIDFfikillall -9 syncthing > /dev/null 2>&1 || truerm -rf /opt/$QPKG_NAME
if [-f $QPKG_ROOT/test_user]; then
rm -f $QPKG_ROOT/test_user
deluser $USER > /dev/null 2>&1 || true
fi
;;
restart)$0 stop$0 start;;
*)echo “Usage: $0 {start|stop|restart}”exit 1;;esac
exit 0
```
---
### Author:  [@matt\_v](https://forum.syncthing.net/u/matt_v)
#### Post date: [August 20, 2025, 5:19pm UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/12 "2025-08-20T17:19:25Z")
Wanted to share my experience with upgrading my environment. My 3 QNAP units are dual-tier, with SATA HDDs for bulk storage and critical files and high-load apps on SSD. The Syncthing QPKG is hosted on SSD, along with its back-end DB. In my case (QTS 5.2.6, SSD array was the second to be created), the path was `/share/CE_CACHEDEV2_DATA/.qpkg/SyncThing`. My installed Syncthing version before I started the upgrade was 1.30.0, and the web UI offered to upgrade to 2.0.2.
1. Refresh your off-box backups (I use an OWC RAID enclosure with SATA SSDs that I unplug and put away when done)
2. Enable SSH connectivity to each QNAP if disabled
3. Pause or minimize all other storage activities until the upgrade completes to reduce resource thrashing
4. Start the Syncthing upgrade from its web UI, watch Resource Monitor in the QNAP web UI to see when all Syncthing processes stop
5. Stop the Syncthing app in QNAP App Center
6. SSH to the unit and edit `/share//.qpkg/SyncThing/SyncThing.sh`
7. Scroll down to lines 36 and 38 and change all CLI flags to use double-dashes. (Pasted version below.) Save the file.
8. Start Syncthing app in QNAP App Center. Don’t touch anything except Performance Monitor and try to stop/minimize all other storage activities. When the upgrade completes, you’ll see your disk utilization drop down to normal levels, and the Syncthing web UI will come up. The RAID array where the Syncthing QPKG is installed will get hammered the hardest - I saw spikes of up to 145 MB/s.
**Lines to change in SyncThing.sh - this is the final state**
```bash
$QPKG_ROOT/syncthing --upgrade ;
```
```bash
$QPKG_ROOT/syncthing --gui-address=0.0.0.0:8384 --home=$HOME --logfile=$HOME/synthing.log &echo $! > $PIDF
```
For an idea of how long my first upgrade took:
- QNAP TS-464 with Celeron N5095 and 4GB RAM
- QM2 expansion card with 2x Crucial P3 Plus 2TB SSDs
- Encrypted RAID1
- Syncthing managing 5 shares with combined ~12TB across 720K files
- First start after modifying SyncThing.sh took ~45 minutes
- Rescanning all shared folders and syncing with the remote arrays took ~15 minutes
---
### Author:  [@USRFSledge](https://forum.syncthing.net/u/USRFSledge)
#### Post date: [August 21, 2025, 10:00am UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/13 "2025-08-21T10:00:34Z")
Looking at the snippets shared in this topic, it seems I’m lonely with my QPKG installation, which seems completely different. I would say, that I’m running Syncthing from that package over a decade or so (from v0.11 or v0.10).
---
### Author:  [@maxmonz](https://forum.syncthing.net/u/maxmonz)
#### Post date: [August 22, 2025, 10:52am UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/14 "2025-08-22T10:52:01Z")
I started with Syncthing from a QPKG installation but I noticed the application proposed an upgrade to v2.0 while the QPKG was limited to the v1.3. Maybe it takes time before the package’s update.
For example, on my laptop syncthing didn’t propose any update to the v2.0.
---
### Author:  [@tomasz86](https://forum.syncthing.net/u/tomasz86)
#### Post date: [August 22, 2025, 11:59am UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/15 "2025-08-22T11:59:24Z")
Just to be sure, is it really running v1.3.0 (which is very, very old) or v1.30.0 (which is the last version before v2.0.0)?
> [@maxmonz](#):
>
> For example, on my laptop syncthing didn’t propose any update to the v2.0.
This depends on how you’ve installed Syncthing, whether checking for upgrades is disabled, etc.
---
### Author:  [@maxmonz](https://forum.syncthing.net/u/maxmonz)
#### Post date: [August 22, 2025, 1:07pm UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/16 "2025-08-22T13:07:09Z")
Yes, sorry, it was 1.30.
Regarding the Syncthing on laptop I don’t remember how I installed it but automatic upgrade is disabled by administrator or mantainer
---
### Author:  [@maxmonz](https://forum.syncthing.net/u/maxmonz)
#### Post date: [August 22, 2025, 1:12pm UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/17 "2025-08-22T13:12:30Z")
I just found out this: Auto upgrades are not enabled in builds delivered via APT. I think I installed it from the repository
---
### Author:  [@tomasz86](https://forum.syncthing.net/u/tomasz86)
#### Post date: [August 22, 2025, 2:03pm UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/18 "2025-08-22T14:03:08Z")
Yeah, assuming you use the official APT packages, you need to manually change the channel in order to upgrade to Syncthing v2 (see [https://apt.syncthing.net](https://apt.syncthing.net)).
---
### Author:  [@Moisie](https://forum.syncthing.net/u/Moisie)
#### Post date: [August 22, 2025, 4:08pm UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/19 "2025-08-22T16:08:11Z")
FWIW I used the QPKG from here - [Release v1.23.0-alpha1 · bmachek/syncthing-qnap · GitHub](https://github.com/bmachek/syncthing-qnap/releases/tag/v1.23.0-alpha1) - and it prompted me for the v2 upgrade. At that point I then had to edit the `syncthing.sh` file to add double-dashes, as already noted.
---
### Author:  [@lgsancho](https://forum.syncthing.net/u/lgsancho)
#### Post date: [August 22, 2025, 9:31pm UTC](https://forum.syncthing.net/t/syncthing-2-0-on-qnap-nas/24810/20 "2025-08-22T21:31:59Z")
There is now “official” release of Syncthing 2.0.2 at [MyQNAP.org](http://MyQNAP.org)
> **[Syncthing - MyQNAP](https://www.myqnap.org/product/syncthing/)**
>
> Syncthing is an open source continuous file synchronization program. It synchronizes files between two or more computers in real time, safely protected from prying eyes. Your data is your data alone and you deserve to choose where it is stored,...
I haven’t tried it yet.
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