c86fee78cb
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
99 lines
3.9 KiB
Bash
Executable File
99 lines
3.9 KiB
Bash
Executable File
#!/bin/bash
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# Enhanced script to list available backup sources and targets
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# Shows options for all three backup modes
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echo "=== Enhanced Simple LVM Backup with Borg Support - Available Options ==="
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echo ""
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echo "=== SOURCES ==="
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echo ""
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echo "Logical Volumes (for lv-to-lv and lv-to-raw modes):"
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echo "---------------------------------------------------"
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if command -v lvs >/dev/null 2>&1; then
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echo "Path Size VG Name"
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echo "----------------------------------------"
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lvs --noheadings -o lv_path,lv_size,vg_name | while read lv_path lv_size vg_name; do
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printf "%-24s %-8s %s\n" "$lv_path" "$lv_size" "$vg_name"
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done
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else
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echo "LVM not available"
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fi
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echo ""
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echo "Volume Groups (for vg-to-raw mode):"
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echo "-----------------------------------"
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if command -v vgs >/dev/null 2>&1; then
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echo "VG Name Size PV Count"
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echo "----------------------------------"
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vgs --noheadings -o vg_name,vg_size,pv_count | while read vg_name vg_size pv_count; do
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printf "%-16s %-8s %s PVs\n" "$vg_name" "$vg_size" "$pv_count"
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done
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else
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echo "LVM not available"
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fi
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echo ""
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echo "=== TARGETS ==="
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echo ""
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echo "Existing Logical Volumes (for lv-to-lv mode):"
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echo "---------------------------------------------"
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if command -v lvs >/dev/null 2>&1; then
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echo "Path Size VG Name"
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echo "----------------------------------------"
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lvs --noheadings -o lv_path,lv_size,vg_name | while read lv_path lv_size vg_name; do
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# Highlight external/backup VGs
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if [[ "$vg_name" == *"migration"* ]] || [[ "$vg_name" == *"external"* ]] || [[ "$vg_name" == *"backup"* ]]; then
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printf "%-24s %-8s %s (backup VG)\n" "$lv_path" "$lv_size" "$vg_name"
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else
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printf "%-24s %-8s %s\n" "$lv_path" "$lv_size" "$vg_name"
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fi
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done
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else
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echo "LVM not available"
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fi
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echo ""
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echo "Raw Block Devices (for lv-to-raw and vg-to-raw modes):"
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echo "------------------------------------------------------"
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echo "Device Size Model"
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echo "-------------------------"
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lsblk -dno NAME,SIZE,MODEL | grep -E '^sd|^nvme' | while read name size model; do
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printf "/dev/%-6s %-8s %s\n" "$name" "$size" "$model"
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done
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echo ""
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echo "=== USAGE EXAMPLES ==="
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echo ""
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echo "1. LV to LV (update existing backup):"
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echo " sudo ./enhanced_simple_backup.sh lv-to-lv /dev/internal-vg/root /dev/backup-vg/root"
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echo ""
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echo "2. LV to Raw Device (fresh backup):"
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echo " sudo ./enhanced_simple_backup.sh lv-to-raw /dev/internal-vg/root /dev/sdb"
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echo ""
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echo "3. Entire VG to Raw Device (complete clone):"
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echo " sudo ./enhanced_simple_backup.sh vg-to-raw internal-vg /dev/sdb"
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echo ""
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echo "4. LV to Borg Repository (block-level backup):"
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echo " sudo ./enhanced_simple_backup.sh lv-to-borg /dev/internal-vg/root /path/to/borg/repo --new-repo"
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echo " → Stores raw snapshot as 'root.img' in Borg repo"
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echo ""
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echo "5. Entire VG to Borg Repository (all LVs as block devices):"
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echo " sudo ./enhanced_simple_backup.sh vg-to-borg internal-vg /path/to/borg/repo --encryption repokey"
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echo " → Creates separate archives for each LV (space-efficient, one LV at a time)"
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echo ""
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echo "=== GUI VERSION ==="
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echo " sudo python3 simple_backup_gui.py"
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echo ""
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echo "=== IMPORTANT NOTES ==="
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echo "- Always run as root (sudo)"
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echo "- lv-to-lv: Updates existing backup LV"
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echo "- lv-to-raw: Creates fresh backup, overwrites target device"
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echo "- vg-to-raw: Clones entire VG including LVM metadata"
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echo "- lv-to-borg/vg-to-borg: Creates block-level backups in Borg (preserves exact LV state)"
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echo "- LV→Borg: Single archive with one .img file, VG→Borg: Separate archives per LV"
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echo "- VG→Borg processes one LV at a time to avoid space issues"
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echo "- Borg backups are deduplicated, compressed, and encrypted"
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echo "- Borg backups require: sudo apt install borgbackup"
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echo "- Make sure target devices are unmounted before backup"
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echo "" |