Omar Sobh
7a3c04bed7
Build with clawstor cache / Cargo build (clawstor-cached) (pull_request) Successful in 10s
deploy/scripts/rotate-snapshots.sh creates daily-YYYY-MM-DD snapshot + prunes daily-* older than RETAIN_DAYS. Only touches its own daily-* namespace so hand-created snapshots (release anchors etc) never get reaped. 02:00 timer runs ahead of the 03:15 ref-sweep + 03:30 gc so tonight's fresh snapshot pins protect its blobs from eviction. DRY_RUN=1 for preview.
75 lines
2.7 KiB
Bash
Executable File
75 lines
2.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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# rotate-snapshots.sh — create today's daily snapshot + prune snapshots
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# older than N days. Idempotent: safe to run repeatedly on the same day.
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#
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# Snapshots created by this script are named `daily-YYYY-MM-DD`. Only
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# snapshots matching that prefix are candidates for pruning — hand-created
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# snapshots (release-anchor, pre-migration, etc.) are never touched.
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#
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# Env / args:
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# CLAWSTOR_BIN path to claw-store binary (default: ~/clawstor-deploy/claw-store)
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# CLAWSTOR_CONFIG path to config.toml (default: ~/clawstor-deploy/config.toml)
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# RETAIN_DAYS snapshots older than this many days get pruned (default: 30)
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# DRY_RUN=1 print what would happen, no side effects
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set -euo pipefail
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CLAWSTOR_BIN=${CLAWSTOR_BIN:-$HOME/clawstor-deploy/claw-store}
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CLAWSTOR_CONFIG=${CLAWSTOR_CONFIG:-$HOME/clawstor-deploy/config.toml}
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RETAIN_DAYS=${RETAIN_DAYS:-30}
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DRY_RUN=${DRY_RUN:-0}
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if [ ! -x "$CLAWSTOR_BIN" ]; then
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echo "error: $CLAWSTOR_BIN not executable" >&2
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exit 1
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fi
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CS="$CLAWSTOR_BIN --config $CLAWSTOR_CONFIG"
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TODAY=$(date +%Y-%m-%d)
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NAME="daily-$TODAY"
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echo "── rotate-snapshots ────────────────────────────────"
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echo "today: $NAME"
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echo "retention: $RETAIN_DAYS days"
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# Create today's snapshot. Idempotent: `cluster-snapshot-create` errors
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# if the name already exists — we treat that as success.
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if [ "$DRY_RUN" = "1" ]; then
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echo "dry-run: would create snapshot $NAME"
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else
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if $CS cluster-snapshot-create --name "$NAME" 2>&1 | tail -6; then
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echo "created: $NAME"
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else
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echo "already exists (idempotent): $NAME"
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fi
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fi
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# Compute cutoff — POSIX date arithmetic (no GNU date extensions needed
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# because we do the math on the epoch integer).
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NOW_EPOCH=$(date +%s)
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CUTOFF_EPOCH=$((NOW_EPOCH - RETAIN_DAYS * 86400))
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# Snapshot list format:
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# CREATED_AT NAME BLOBS SIZE
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# 1784046443 daily-2026-07-14 4 224
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# So awk field 1 = epoch, field 2 = name.
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PRUNE_LIST=$($CS cluster-snapshot-list 2>/dev/null | awk -v cutoff="$CUTOFF_EPOCH" '
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NR > 4 && $2 ~ /^daily-/ && $1 < cutoff { print $2 }
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')
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echo
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if [ -z "$PRUNE_LIST" ]; then
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echo "nothing to prune"
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else
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echo "prune candidates (older than $RETAIN_DAYS days):"
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echo "$PRUNE_LIST" | sed 's/^/ /'
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if [ "$DRY_RUN" = "1" ]; then
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echo "dry-run: no snapshots deleted"
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else
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echo "$PRUNE_LIST" | while read -r snap; do
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$CS cluster-snapshot-delete --name "$snap" 2>&1 | tail -1
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done
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fi
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fi
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echo "────────────────────────────────────────────────────"
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