[Bug] Storage information not accurate on BTRFS RAID (Type 5)

[zwimer]

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Description of the bug

I have a BTRFS raid 5 array. On split view: Most of the HDDs hit bug #935 but the one that does not lists that it is 47.6TiB / 16 TiB full. On non-split view: The pie chart shows 47.6 TiB / 67.3 TiB.

The first one is showing the used of the entire raid array / capacity of the individual HDD. The second is showing used of the entire raid array / sum(capacity of each HDD in the raid array).

Neither shows used / capacity of the raid array.

I'm not sure how to handle this exactly, as df -Thl itself reports 47.6 TiB / 67.3 TiB; I know btrfs fi usage /mnt/foo shows the correct amount of 49 TiB. But even if this is a won't fix, I think at least the split view display value is incorrect.

How to reproduce

1. Create a BTRFS raid 5 array using 4 HDDs
2. Run dash

Relevant log output

dashdot  |   storage: [
dashdot  |     {
dashdot  |       size: 2000398934016,
dashdot  |       disks: [ { device: 'nvme0n1', brand: 'Samsung', type: 'NVMe' } ]
dashdot  |     },
dashdot  |     {
dashdot  |       size: 18000207937536,
dashdot  |       disks: [ { device: 'sda', brand: 'Western Digital', type: 'HD' } ]
dashdot  |     },
dashdot  |     {
dashdot  |       size: 18000207937536,
dashdot  |       disks: [ { device: 'sdb', brand: 'Western Digital', type: 'HD' } ]
dashdot  |     },
dashdot  |     {
dashdot  |       size: 18000207937536,
dashdot  |       disks: [ { device: 'sdc', brand: 'Western Digital', type: 'HD' } ]
dashdot  |     },
dashdot  |     {
dashdot  |       size: 18000207937536,
dashdot  |       disks: [ { device: 'sdd', brand: 'Western Digital', type: 'HD' } ]
dashdot  |     },
dashdot  |     {
dashdot  |       size: 8589934592,
dashdot  |       disks: [ { device: 'zram0', brand: 'zram0', type: 'SSD' } ]
dashdot  |     }
dashdot  |   ],

Info output of dashdot cli

yarn run v1.22.19
$ node dist/apps/cli/main.js info
node:internal/modules/cjs/loader:1080
  throw err;
  ^

Error: Cannot find module 'systeminformation'
Require stack:
- /app/dist/apps/cli/apps/cli/src/main.js
- /app/dist/apps/cli/main.js
    at Module._resolveFilename (node:internal/modules/cjs/loader:1077:15)
    at Module._resolveFilename (/app/dist/apps/cli/main.js:32:36)
    at Module._load (node:internal/modules/cjs/loader:922:27)
    at Module.require (node:internal/modules/cjs/loader:1143:19)
    at require (node:internal/modules/cjs/helpers:121:18)
    at Object.<anonymous> (/app/dist/apps/cli/apps/cli/src/main.js:26:18)
    at Module._compile (node:internal/modules/cjs/loader:1256:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1310:10)
    at Module.load (node:internal/modules/cjs/loader:1119:32)
    at Module._load (node:internal/modules/cjs/loader:960:12) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    '/app/dist/apps/cli/apps/cli/src/main.js',
    '/app/dist/apps/cli/main.js'
  ]
}

Node.js v18.17.1
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

What browsers are you seeing the problem on?

Chrome

Where is your instance running?

Linux Server

Additional context

In docker