lotus/documentation/en/storing-data.md

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# Storing Data
> There are recent bug reports with these instructions. If you happen to encounter any problems, please create a [GitHub issue](https://github.com/filecoin-project/lotus/issues/new) and a maintainer will address the problem as soon as they can.
Here are instructions for how to store data on the **Lotus DevNet**.
## Adding a file
```sh
lotus client import ./your-example-file.txt
```
Upon success, this command will return a **Data CID**.
## List local files
The command to see a list of files by `CID`, `name`, `size` in bytes, and `status`:
```sh
lotus client local
```
An example of the output:
```sh
bafkreierupr5ioxn4obwly4i2a5cd2rwxqi6kwmcyyylifxjsmos7hrgpe Development/sample-1.txt 2332 ok
bafkreieuk7h4zs5alzpdyhlph4lxkefowvwdho3a3pml6j7dam5mipzaii Development/sample-2.txt 30618 ok
```
## Make a Miner Deal on DevNet
Get a list of all miners that can store data:
```sh
lotus state list-miners
```
Get the requirements of a miner you wish to store data with:
```sh
lotus client query-ask <miner>
```
Store a **Data CID** with a miner:
```sh
lotus client deal <Data CID> <miner> <price> <duration>
# price is in attoFIL/byte/block
# duration is number of blocks.
```
Upon success, this command will return a **Deal CID**.
From now on the **Data CID** is [retrievable](https://docs.lotu.sh/en+retrieving-data) from the **Lotus Storage Miner**.
## Troubleshooting
```sh
WARN main lotus/main.go:72 routing: not found
```
* This miner is offline.
```sh
WARN main lotus/main.go:72 failed to start deal: computing commP failed: generating CommP: Piece must be at least 127 bytes
```
* There is a minimum file size of 127 bytes.