root c86fee78cb fix: Solve space issues in VG→Borg backups ...

Problem: VG→Borg was creating temp files for all LVs simultaneously,
causing 'no space left' errors when LVs are large.

Solution: Process LVs sequentially instead of simultaneously:
1. Create snapshot for one LV
2. Stream it directly to Borg (no temp files)
3. Remove snapshot immediately
4. Move to next LV

Changes:
- VG→Borg now creates separate archives per LV instead of one big archive
- Each LV gets its own archive: vg_internal-vg_lv_root_20241009_123456
- No temporary files needed - direct streaming
- Space-efficient: only one snapshot exists at a time
- More robust: failure of one LV doesn't affect others

Benefits:
- No more space issues regardless of LV sizes
- Faster cleanup between LVs
- Individual LV recovery possible
- Better error isolation
- Still preserves block-level backup benefits

2025-10-09 00:51:15 +02:00

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