fix(api): get sizes of all drives instead of just the main one

there has been a problem with only the main drive being read in the usage statistics, which this
issue should fix

for #59

INSTALL.md

@@ -10,28 +10,36 @@ To read more about configuration options, you can visit the [CONFIGURATION.md](.
 
 docker container run -it \
   -p 80:3001 \
+  --privileged \
   -v /etc/os-release:/etc/os-release:ro \
   -v /proc/1/ns/net:/mnt/host_ns_net:ro \
-  --privileged \
+  -v /media:/mnt/host_media:ro \
+  -v /mnt:/mnt/host_mnt:ro \
   mauricenino/dashdot
 ```
 
 > Note: The `--privileged` flag is needed to correctly determine the memory and storage info.
 
 <!-- -->
 
+> Note: The volume mount on `/etc/os-release:/etc/os-release:ro` is for the
+> dashboard to show the OS version of the host instead of the OS of the docker
+> container (which is running on Alpine Linux). If you wish to show the docker
+> container OS instead, just remove this line. If you are not able to use this
+> mount, you can pass a custom OS with the `DASHDOT_OVERRIDE_OS` flag.
+
+<!-- -->
+
 > Note: The volume mount on `/proc/1/ns/net:/host_ns_net:ro` is needed to
 > correctly determine the network info. If you are not able to use this mount,
 > you will need to fall back to `--net host`, or you will only get the network
 > stats of the container instead of the host.
 
 <!-- -->
 
-> Note: The volume mount on `/etc/os-release:/etc/os-release:ro` is for the
-> dashboard to show the OS version of the host instead of the OS of the docker
-> container (which is running on Alpine Linux). If you wish to show the docker
-> container OS instead, just remove this line. If you are not able to use this
-> mount, you can pass a custom OS with the `DASHDOT_OVERRIDE_OS` flag.
+> Note: The volume mounts on `/media:/mnt/host_media:ro` and `/mnt:/mnt/host_mnt:ro`
+> are needed to read the usage stats of all drives. If your drives are mounted somewhere
+> else, you need to pass that drive path with the following format: `-v /{path}:/mnt/host_{path}:ro`.
 
 ## Docker-Compose
 
@@ -53,6 +61,8 @@ services:
     volumes:
       - /etc/os-release:/etc/os-release:ro
       - /proc/1/ns/net:/mnt/host_ns_net:ro
+      - /media:/mnt/host_media:ro
+      - /mnt:/mnt/host_mnt:ro
 ```
 
 ## From Source

README.md

@@ -69,6 +69,8 @@ docker container run -it \
   -p 80:3001 \
   -v /etc/os-release:/etc/os-release:ro \
   -v /proc/1/ns/net:/mnt/host_ns_net:ro \
+  -v /media:/mnt/host_media:ro \
+  -v /mnt:/mnt/host_mnt:ro \
   --privileged \
   mauricenino/dashdot
 ```

apps/api/src/dynamic-info.ts

@@ -77,10 +77,14 @@ export const storageObs = createBufferedInterval(
   1,
   CONFIG.storage_poll_interval,
   async (): Promise<StorageLoad> => {
-    const data = await si.fsSize();
-    const root = data.find(d => d.mount === '/');
+    const [disks, sizes] = await Promise.all([si.diskLayout(), si.fsSize()]);
+    const devices = disks.map(({ device }) => device);
 
-    return root?.used ?? 0;
+    const filtered = sizes.filter(
+      ({ fs }) => devices.some(dev => fs.startsWith(dev)) || fs === 'overlay'
+    );
+
+    return filtered.reduce((acc, { used }) => acc + used, 0);
   }
 );
 

docker-compose.yml

@@ -23,3 +23,5 @@ services:
       - ./:/app
       - /etc/os-release:/etc/os-release:ro
       - /proc/1/ns/net:/mnt/host_ns_net:ro
+      - /media:/mnt/host_media:ro
+      - /mnt:/mnt/host_mnt:ro