# MongoDB strange growth

**URL:** <https://forums.rocket.chat/t/mongodb-strange-growth/10827>\
**Category:** Community Support\
**Created:** [March 31, 2021, 11:34am UTC](https://forums.rocket.chat/t/mongodb-strange-growth/10827 "2021-03-31T11:34:45Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![felix.heilig](https://avatars.discourse-cdn.com/v4/letter/f/c4cdca/32.png) [@felix.heilig](https://forums.rocket.chat/u/felix.heilig)\
**Post date:** [March 31, 2021, 11:34am UTC](https://forums.rocket.chat/t/mongodb-strange-growth/10827/1 "2021-03-31T11:34:45Z")

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### Description

Hi all,  
I’m facing the problem that my rocketchat mongo db keeps growing uncontrollably.  
from one day to the other, without any know changes, the db keeps growing.  
From orginaly ~ 5GB to ~300 GB.

ls -la /data/db shows me that I’m having files from  
rocketchat.0 upto rocketchat.139

strange enough the files rocketchat.5 to rocketchat.139 are all the same size.

-rw------- 1 mongodb root 67108864 Mar 31 11:02 rocketchat.0  
-rw------- 1 mongodb root 134217728 Mar 31 11:03 rocketchat.1  
…  
-rw------- 1 mongodb root 2146435072 Mar 30 08:24 rocketchat.5  
…  
-rw------- 1 mongodb root 2146435072 Mar 30 09:40 rocketchat.139

ls -la on my mongodb dump path /dump/rocketchat

I notice this huge file  
-rw-r–r-- 1 root root 276060MB Mar 31 09:20 rocketchat\_userDataFiles.chunks.bson

thats 276 GB…

what is this file for any why is keeping to grow?  
Any suggestions on what to check / to do ?

### Server Setup Information

- Version of Rocket.Chat Server: `3.11.1`
- Operating System: debian / rocketchat docker image
- Deployment Method: docker
- Number of Running Instances: 1
- DB Replicaset Oplog: `128 `
- NodeJS Version: v12.18.4
- MongoDB Version: 4.0.20 / mmapv1 (oplog active)
- Proxy: nginx
- Firewalls involved: no

my docker-compose file:  
version: “3.5”

networks:  
rocketchat:  
name: rocketchat

volumes:  
rocketchat-mongo-data:  
name: rocketchat-mongo-data  
rocketchat-mongo-config:  
name: rocketchat-mongo-config  
rocketchat-uploads:  
name: rocketchat-uploads

services:  
rocketchat:  
container\_name: rocketchat  
image: rocketchat/rocket.chat:3.11.1  
hostname: “chat.xxx.d”  
command: \>  
bash -c  
“for i in `seq 1 30`; do  
node main.js &&  
s=$$? && break || s=$$?;  
echo “Tried $$i times. Waiting 5 secs…”;  
sleep 5;  
done; (exit $$s)”  
restart: always  
volumes:  
- rocketchat-uploads:/app/uploads  
environment:  
- PORT=3000  
- ROOT\_URL=https://chat.xxx.de  
- MONGO\_URL=mongodb://mongo:27017/rocketchat  
- MONGO\_OPLOG\_URL=mongodb://mongo:27017/local  
depends\_on:  
- mongo  
ports:  
- “9500:3000”  
networks:  
- rocketchat

mongo:  
container\_name: rocketchat-mongo  
image: mongo:4.0  
restart: always  
volumes:  
- rocketchat-mongo-data:/data/db  
- rocketchat-mongo-config:/data/configdb  
command: mongod --smallfiles --oplogSize 128 --replSet rs0 --storageEngine=mmapv1  
# labels:  
# - “traefik.enable=false”  
networks:  
- rocketchat

---

<div class="post-metadata">

**Author:** ![felix.heilig](https://avatars.discourse-cdn.com/v4/letter/f/c4cdca/32.png) [@felix.heilig](https://forums.rocket.chat/u/felix.heilig)\
**Post date:** [March 31, 2021, 11:45am UTC](https://forums.rocket.chat/t/mongodb-strange-growth/10827/2 "2021-03-31T11:45:13Z")

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looking into the mondob collection shows rocketchat\_userDataFiles.chunks is indeed about ~ 260 GB in size.

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<div class="post-metadata">

**Author:** ![sergey.korobeiko](https://avatars.discourse-cdn.com/v4/letter/s/b5e925/32.png) [@sergey.korobeiko](https://forums.rocket.chat/u/sergey.korobeiko)\
**Post date:** [May 14, 2022, 7:26pm UTC](https://forums.rocket.chat/t/mongodb-strange-growth/10827/3 "2022-05-14T19:26:08Z")

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How did you solve the problem? I have the same db growing rocketchat\_userDataFiles.chunks