torrentclaw/unarr
1
0
Fork 0
Code Issues Pull requests Projects Releases 4 Packages Wiki Activity Actions

feat(downloads): pre-flight free-disk guard before each download (hueco medio)

Browse source 
CheckDiskSpace (internal/engine/diskspace.go) refuses a download before
writing when its expected size wouldn't leave a configurable reserve free,
so a download never fills the filesystem to 0 mid-write (which corrupts the
partial file). Wired into all three downloaders ahead of any write — torrent
(DataDir), debrid (outputDir, resume-aware), usenet (outputDir, fresh only).
Reserve from downloads.min_free_disk_mb (default 2048 MiB) via SetMinFreeBytes.

The manager treats an InsufficientDiskError as terminal — no source fallback,
since another source would fill the same disk — and surfaces the clear message.
Best-effort: unknown size or a stat failure doesn't block (ENOSPC stays the
backstop). Also hardens formatBytes against an exabyte-scale out-of-bounds panic.
This commit is contained in:
Deivid Soto 2026-05-31 21:48:34 +02:00
parent 2be92516c6
commit 1cad73b9a7
9 changed files with 196 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

5
internal/config/config.go
View file

@ -43,6 +43,7 @@ type DownloadConfig struct {
PreferredMethod string `toml:"preferred_method"`
PreferredQuality string `toml:"preferred_quality"` // "2160p", "1080p", "720p" — hint for auto-selection
MaxConcurrent int `toml:"max_concurrent"`
MinFreeDiskMB int `toml:"min_free_disk_mb"` // refuse a download if it would leave less than this free (reserve to keep the FS healthy); default 2048, 0 = disable
MaxDownloadSpeed string `toml:"max_download_speed"` // e.g. "10MB", "500KB", "0" = unlimited
MaxUploadSpeed string `toml:"max_upload_speed"` // e.g. "1MB", "0" = unlimited
MetadataTimeout string `toml:"metadata_timeout"` // e.g. "1h", "30m", "0" = unlimited (default: "0")
@ -195,6 +196,7 @@ func Default() Config {
Download: DownloadConfig{
PreferredMethod: "auto",
MaxConcurrent: 3,
MinFreeDiskMB: 2048, // 2 GiB reserve
StreamPort: 11818,
RequireStreamToken: true, // secure by default; loopback exempt
Transcode: TranscodeConfig{
@ -293,6 +295,9 @@ func applyDefaults(cfg *Config, meta toml.MetaData) {
if !meta.IsDefined("downloads", "max_concurrent") {
cfg.Download.MaxConcurrent = 3
}
if !meta.IsDefined("downloads", "min_free_disk_mb") {
cfg.Download.MinFreeDiskMB = 2048 // 2 GiB reserve so a download never fills the FS to 0
}
if !meta.IsDefined("downloads", "stream_port") {
cfg.Download.StreamPort = 11818
}