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diff --git a/custom/RESCUE-GUIDE.txt b/custom/RESCUE-GUIDE.txt new file mode 100644 index 0000000..2ffa92e --- /dev/null +++ b/custom/RESCUE-GUIDE.txt @@ -0,0 +1,230 @@ +================================================================================ + ARCHZFS RESCUE GUIDE +================================================================================ + +This guide covers common rescue and recovery scenarios. For quick command +reference, use: tldr <command> + +Table of Contents: + 1. ZFS Recovery + 2. Data Recovery + 3. Boot Repair + 4. Windows Recovery + 5. Hardware Diagnostics + 6. Disk Operations + 7. Network Troubleshooting + +================================================================================ +1. ZFS RECOVERY +================================================================================ + +QUICK REFERENCE +--------------- + tldr zfs # ZFS filesystem commands + tldr zpool # ZFS pool commands + man zfs # Full ZFS manual + man zpool # Full zpool manual + +SCENARIO: Import a pool from another system +------------------------------------------- +List pools available for import: + + zpool import + +Import a specific pool: + + zpool import poolname + +If the pool was not cleanly exported (e.g., system crash): + + zpool import -f poolname + +Import with a different name (to avoid conflicts): + + zpool import oldname newname + + +SCENARIO: Pool won't import - "pool may be in use" +-------------------------------------------------- +Force import (use when you know it's safe): + + zpool import -f poolname + +If that fails, try recovery mode: + + zpool import -F poolname + +Last resort - import read-only to recover data: + + zpool import -o readonly=on poolname + + +SCENARIO: Check pool health and repair +-------------------------------------- +Check pool status: + + zpool status poolname + +Start a scrub (checks all data, can take hours): + + zpool scrub poolname + +Check scrub progress: + + zpool status poolname + +Clear transient errors after fixing hardware: + + zpool clear poolname + + +SCENARIO: Recover from snapshot / Rollback +------------------------------------------ +List all snapshots: + + zfs list -t snapshot + +Rollback to a snapshot (destroys changes since snapshot): + + zfs rollback poolname/dataset@snapshot + +For snapshots with intermediate snapshots, use -r: + + zfs rollback -r poolname/dataset@snapshot + + +SCENARIO: Copy data from ZFS pool +--------------------------------- +Mount datasets if not auto-mounted: + + zfs mount -a + +Or mount specific dataset: + + zfs set mountpoint=/mnt/recovery poolname/dataset + zfs mount poolname/dataset + +Copy with rsync (preserves permissions, shows progress): + + rsync -avP --progress /mnt/recovery/ /destination/ + + +SCENARIO: Send/Receive snapshots (backup/migrate) +------------------------------------------------- +Create a snapshot first: + + zfs snapshot poolname/dataset@backup + +Send to a file (local backup): + + zfs send poolname/dataset@backup > /path/to/backup.zfs + +Send with progress indicator: + + zfs send poolname/dataset@backup | pv > /path/to/backup.zfs + +Send to another pool locally: + + zfs send poolname/dataset@backup | zfs recv newpool/dataset + +Send to remote system over SSH: + + zfs send poolname/dataset@backup | ssh user@remote zfs recv pool/dataset + +With progress and buffering for network transfers: + + zfs send poolname/dataset@backup | pv | mbuffer -s 128k -m 1G | \ + ssh user@remote "mbuffer -s 128k -m 1G | zfs recv pool/dataset" + + +SCENARIO: Encrypted pool - unlock and mount +------------------------------------------- +Load the encryption key (will prompt for passphrase): + + zfs load-key poolname + +Or for all encrypted datasets: + + zfs load-key -a + +Then mount: + + zfs mount -a + + +SCENARIO: Replace failed drive in mirror/raidz +---------------------------------------------- +Check which drive failed: + + zpool status poolname + +Replace the drive (assuming /dev/sdc is new drive): + + zpool replace poolname /dev/old-drive /dev/sdc + +Monitor resilver progress: + + zpool status poolname + + +SCENARIO: See what's using a dataset (before unmount) +----------------------------------------------------- +Check what processes have files open: + + lsof /mountpoint + +Or for all ZFS mounts: + + lsof | grep poolname + + +USEFUL ZFS COMMANDS +------------------- + zpool status # Pool health overview + zpool list # Pool capacity + zpool history poolname # Command history + zfs list # All datasets + zfs list -t snapshot # All snapshots + zfs get all poolname # All properties + zdb -l /dev/sdX # Low-level pool label info + + +================================================================================ +2. DATA RECOVERY +================================================================================ + +[To be added] + +================================================================================ +3. BOOT REPAIR +================================================================================ + +[To be added] + +================================================================================ +4. WINDOWS RECOVERY +================================================================================ + +[To be added] + +================================================================================ +5. HARDWARE DIAGNOSTICS +================================================================================ + +[To be added] + +================================================================================ +6. DISK OPERATIONS +================================================================================ + +[To be added] + +================================================================================ +7. NETWORK TROUBLESHOOTING +================================================================================ + +[To be added] + +================================================================================ + END OF GUIDE +================================================================================ |