https://www.youngju.dev/blog 천천히 올바르게. AI Researcher & DevOps Engineer Youngju's blog. GPU/CUDA, LLM, MLOps, Kubernetes AI workloads, and data engineering — plus mindset essays on confidence, routines, health, and sport psychology. ko fjvbn2003@gmail.com (Youngju Kim) fjvbn2003@gmail.com (Youngju Kim) Sat, 15 Aug 2026 00:00:00 GMT https://www.youngju.dev/blog/linux/2026-08-15-guide-backup-and-restore.en https://www.youngju.dev/blog/linux/2026-08-15-guide-backup-and-restore.en Starting from RPO and RTO, the criteria for choosing between rsync, tar, LVM snapshots, and snapshot-based backup tools. Covers the recovery rehearsal procedure and the five ways a backup quietly rots. Sat, 15 Aug 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) 리눅스백업복구재해복구운영rsync https://www.youngju.dev/blog/linux/2026-08-15-guide-backup-and-restore.ja https://www.youngju.dev/blog/linux/2026-08-15-guide-backup-and-restore.ja RPOとRTOから出発して、rsync、tar、LVMスナップショット、スナップショットベースのバックアップツールを選ぶ基準を整理します。復旧リハーサルの手順と、バックアップが静かに壊れる五つの方式まで扱います。 Sat, 15 Aug 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) 리눅스백업복구재해복구운영rsync https://www.youngju.dev/blog/linux/2026-08-15-guide-backup-and-restore https://www.youngju.dev/blog/linux/2026-08-15-guide-backup-and-restore RPO와 RTO에서 출발해 rsync, tar, LVM 스냅샷, 스냅샷 기반 백업 도구를 고르는 기준을 정리합니다. 복구 리허설 절차와 백업이 조용히 망가지는 다섯 가지 방식까지 다룹니다. Sat, 15 Aug 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) 리눅스백업복구재해복구운영rsync https://www.youngju.dev/blog/linux/2026-08-15-guide-git-undo.en https://www.youngju.dev/blog/linux/2026-08-15-guide-git-undo.en Maps the boundary between reset, revert, restore, reflog, and fsck by what can actually be recovered. Covers reflog expiry policy, when gc really deletes objects, force-push accidents, and worktree and submodule situations. Sat, 15 Aug 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) git버전관리복구운영협업명령어 https://www.youngju.dev/blog/linux/2026-08-15-guide-git-undo.ja https://www.youngju.dev/blog/linux/2026-08-15-guide-git-undo.ja reset、revert、restore、reflog、fsck の境界線を復元可能性という基準で整理します。reflog の期限切れポリシーと gc が実際にオブジェクトを削除するタイミング、強制プッシュ事故やワークツリー・サブモジュールの状況まで扱います。 Sat, 15 Aug 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) git버전관리복구운영협업명령어 https://www.youngju.dev/blog/linux/2026-08-15-guide-git-undo https://www.youngju.dev/blog/linux/2026-08-15-guide-git-undo reset, revert, restore, reflog, fsck의 경계선을 복구 가능성 기준으로 정리합니다. reflog 만료 정책과 gc가 언제 객체를 실제로 지우는지, 강제 푸시 사고와 워크트리·서브모듈 상황까지 다룹니다. Sat, 15 Aug 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) git버전관리복구운영협업명령어