Anto01
33a6c61ca6
Third backup tier (after Dalidou local + T420 off-host): pull-based backup to the user's Windows main computer. - scripts/windows/atocore-backup-pull.ps1: PowerShell script using built-in OpenSSH scp. Fail-open: exits cleanly if Dalidou unreachable (e.g., laptop on the road). Pulls whole snapshots dir (~45MB, bounded by Dalidou's retention policy). - docs/windows-backup-setup.md: Task Scheduler setup (automated + manual). Runs daily 10:00 local, catches up missed days via StartWhenAvailable, retries 2x on failure. Verified: pulled 3 snapshots (45MB) to C:\Users\antoi\Documents\ATOCore_Backups\. Task "AtoCore Backup Pull" registered in Task Scheduler, State: Ready. Three independent backup tiers now: Dalidou local, T420 off-host, user Windows machine. Any two can fail without data loss. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
88 lines
3.2 KiB
PowerShell
88 lines
3.2 KiB
PowerShell
# atocore-backup-pull.ps1
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#
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# Pull the latest AtoCore backup snapshot from Dalidou to this Windows machine.
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# Designed to be run by Windows Task Scheduler. Fail-open by design -- if
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# Dalidou is unreachable (laptop on the road, etc.), exit cleanly without error.
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#
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# Usage (manual test):
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# powershell.exe -ExecutionPolicy Bypass -File atocore-backup-pull.ps1
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#
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# Scheduled task: see docs/windows-backup-setup.md for Task Scheduler config.
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$ErrorActionPreference = "Continue"
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# --- Configuration ---
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$Remote = "papa@dalidou"
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$RemoteSnapshots = "/srv/storage/atocore/backups/snapshots"
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$LocalBackupDir = "$env:USERPROFILE\Documents\ATOCore_Backups"
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$LogDir = "$LocalBackupDir\_logs"
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$ReachabilityTest = 5 # seconds timeout for SSH probe
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# --- Setup ---
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if (-not (Test-Path $LocalBackupDir)) {
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New-Item -ItemType Directory -Path $LocalBackupDir -Force | Out-Null
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}
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if (-not (Test-Path $LogDir)) {
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New-Item -ItemType Directory -Path $LogDir -Force | Out-Null
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}
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$Timestamp = Get-Date -Format "yyyy-MM-dd_HHmmss"
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$LogFile = "$LogDir\backup-$Timestamp.log"
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function Log($msg) {
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$line = "[{0}] {1}" -f (Get-Date -Format "yyyy-MM-dd HH:mm:ss"), $msg
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Write-Host $line
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Add-Content -Path $LogFile -Value $line
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}
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Log "=== AtoCore backup pull starting ==="
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Log "Remote: $Remote"
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Log "Local target: $LocalBackupDir"
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# --- Reachability check: fail open if Dalidou is offline ---
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Log "Checking Dalidou reachability..."
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$probe = & ssh -o ConnectTimeout=$ReachabilityTest -o BatchMode=yes `
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-o StrictHostKeyChecking=accept-new `
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$Remote "echo ok" 2>&1
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if ($LASTEXITCODE -ne 0 -or $probe -ne "ok") {
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Log "Dalidou unreachable ($probe) -- fail-open exit"
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exit 0
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}
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Log "Dalidou reachable."
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# --- Pull the entire snapshots directory ---
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# Dalidou's retention policy (7 daily + 4 weekly + 6 monthly) already caps
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# the snapshot count, so pulling the whole dir is bounded and simple. scp
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# will overwrite local files -- we rely on this to pick up new snapshots.
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Log "Pulling snapshots via scp..."
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$LocalSnapshotsDir = Join-Path $LocalBackupDir "snapshots"
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if (-not (Test-Path $LocalSnapshotsDir)) {
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New-Item -ItemType Directory -Path $LocalSnapshotsDir -Force | Out-Null
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}
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& scp -o BatchMode=yes -r "${Remote}:${RemoteSnapshots}/*" "$LocalSnapshotsDir\" 2>&1 |
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ForEach-Object { Add-Content -Path $LogFile -Value $_ }
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if ($LASTEXITCODE -ne 0) {
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Log "scp failed with exit $LASTEXITCODE"
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exit 0 # fail-open
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}
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# --- Stats ---
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$snapshots = Get-ChildItem -Path $LocalSnapshotsDir -Directory |
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Where-Object { $_.Name -match "^\d{8}T\d{6}Z$" } |
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Sort-Object Name -Descending
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$totalSize = (Get-ChildItem $LocalSnapshotsDir -Recurse -File | Measure-Object -Property Length -Sum).Sum
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$SizeMB = [math]::Round($totalSize / 1MB, 2)
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$latest = if ($snapshots.Count -gt 0) { $snapshots[0].Name } else { "(none)" }
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Log ("Pulled {0} snapshots successfully (total {1} MB, latest: {2})" -f $snapshots.Count, $SizeMB, $latest)
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Log "=== backup complete ==="
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# --- Log retention: keep last 30 log files ---
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Get-ChildItem -Path $LogDir -Filter "backup-*.log" |
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Sort-Object Name -Descending |
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Select-Object -Skip 30 |
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ForEach-Object { Remove-Item $_.FullName -Force -ErrorAction SilentlyContinue }
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