fix(ci): unblock e2e-s3tests startup and create disk dirs for distributed volumes (#4768)

The scheduled e2e-s3tests sweep failed at "Wait for RustFS ready" in both
topologies because the server never started (issue #4762).

Two independent startup faults, both surfaced now that the local
physical-disk-independence guard is enforced:

- single: RUSTFS_VOLUMES=/data/rustfs{0...3} all live on one physical
  device on the runner, so the guard aborts startup. Set the
  CI-sanctioned RUSTFS_UNSAFE_BYPASS_DISK_CHECK=true (what the guard's own
  error message and the e2e tests already use).

- multi: the entrypoint's process_data_volumes skipped every non-absolute
  entry, so the distributed URL form
  "http://rustfs{1...4}:9000/data/rustfs{0...3}" never created
  /data/rustfs0..3. LocalDisk init then aborts with VolumeNotFound because
  resolve_local_disk_root no longer auto-creates the disk root. This also
  broke the shipped .docker/compose/docker-compose.cluster.yaml for real
  distributed docker deployments.

entrypoint.sh now:
  1. Expands multiple {N...M} ranges per token (the URL form carries two).
     The previous single-pass expander collapsed it to "http://rustfs1"
     and dropped the disk path; it now re-scans until no ranges remain,
     operating on only the first brace to keep multi-range tokens intact.
  2. Creates the local filesystem path for URL-form endpoints (stripping
     scheme://host:port) without appending them as CLI args — rustfs reads
     the distributed form from RUSTFS_VOLUMES directly.

Absolute-path and default (/data) inputs expand byte-identically to before.
The multi compose also gets the CI disk-check bypass, since the four disks
share one device inside each node's container.

.github/workflows/e2e-s3tests.yml

@@ -174,6 +174,10 @@ jobs:
         run: |
           docker network inspect rustfs-net >/dev/null 2>&1 || docker network create rustfs-net
           docker rm -f rustfs-single >/dev/null 2>&1 || true
+          # The four disks share one physical device on the runner (a single
+          # loopback filesystem), so the local physical-disk-independence guard
+          # would refuse to start. Bypass it — this is the CI use case the guard
+          # explicitly sanctions via RUSTFS_UNSAFE_BYPASS_DISK_CHECK.
           docker run -d --name rustfs-single \
             --network rustfs-net \
             -p "${S3_PORT}:9000" \
@@ -181,6 +185,7 @@ jobs:
             -e RUSTFS_ACCESS_KEY="${S3_ACCESS_KEY}" \
             -e RUSTFS_SECRET_KEY="${S3_SECRET_KEY}" \
             -e RUSTFS_VOLUMES="/data/rustfs{0...3}" \
+            -e RUSTFS_UNSAFE_BYPASS_DISK_CHECK=true \
             -v /tmp/rustfs-single:/data \
             rustfs-ci
 
@@ -200,6 +205,10 @@ jobs:
               RUSTFS_ACCESS_KEY: ${S3_ACCESS_KEY}
               RUSTFS_SECRET_KEY: ${S3_SECRET_KEY}
               RUSTFS_VOLUMES: "http://rustfs{1...4}:9000/data/rustfs{0...3}"
+              # Each node's four disks share one physical device inside its
+              # container, so bypass the local physical-disk-independence guard
+              # (the CI use case it explicitly sanctions).
+              RUSTFS_UNSAFE_BYPASS_DISK_CHECK: "true"
 
           services:
             rustfs1:

entrypoint.sh

@@ -191,43 +191,72 @@ process_data_volumes() {
   # Convert comma/tab to space
   VOLUME_LIST_RAW=$(echo "$VOLUME_RAW" | tr ',\t' ' ')
   
-  VOLUME_LIST=""
+  # Manually expand {N...M} ranges since sh doesn't support brace expansion on
-  for vol in $VOLUME_LIST_RAW; do
+  # variables. A single token can carry MORE than one range — the distributed
-      # Helper to manually expand {N..M} since sh doesn't support it on variables
+  # form "http://rustfs{1...4}:9000/data/rustfs{0...3}" has two — so expand the
-      if echo "$vol" | grep -E -q "\{[0-9]+\.\.\.?[0-9]+\}"; then
+  # FIRST range in each token and re-scan until no ranges remain. Operating on
-           PREFIX=${vol%%\{*}
+  # only the first brace (via #*{ / %%}* rather than ##*} / %}) is what keeps
-           SUFFIX=${vol##*\}}
+  # multi-range tokens intact; the previous single-pass expander collapsed them
-           RANGE=${vol#*\{}
+  # to "http://rustfs1" and silently dropped the disk path.
-           RANGE=${RANGE%\}}
+  VOLUME_LIST="$VOLUME_LIST_RAW"
-           RANGE=$(echo "$RANGE" | sed 's/\.\.\./../')
+  while echo "$VOLUME_LIST" | grep -E -q "\{[0-9]+\.\.\.?[0-9]+\}"; do
-           START=${RANGE%%..*}
+      NEXT_LIST=""
-           END=${RANGE##*..}
+      for vol in $VOLUME_LIST; do
+          if echo "$vol" | grep -E -q "\{[0-9]+\.\.\.?[0-9]+\}"; then
+               PREFIX=${vol%%\{*}
+               REST=${vol#*\}}
+               RANGE=${vol#*\{}
+               RANGE=${RANGE%%\}*}
+               RANGE=$(echo "$RANGE" | sed 's/\.\.\./../')
+               START=${RANGE%%..*}
+               END=${RANGE##*..}
 
-           # Check if START and END are numbers
+               # Check if START and END are numbers
-           if [ "$START" -eq "$START" ] 2>/dev/null && [ "$END" -eq "$END" 2>/dev/null ]; then
+               if [ "$START" -eq "$START" ] 2>/dev/null && [ "$END" -eq "$END" 2>/dev/null ]; then
-               i=$START
+                   i=$START
-               while [ "$i" -le "$END" ]; do
+                   while [ "$i" -le "$END" ]; do
-                 VOLUME_LIST="$VOLUME_LIST ${PREFIX}${i}${SUFFIX}"
+                     NEXT_LIST="$NEXT_LIST ${PREFIX}${i}${REST}"
-                 i=$((i+1))
+                     i=$((i+1))
-               done
+                   done
-           else
+               else
-               # Fallback if not numbers
+                   # Fallback if not numbers
-               VOLUME_LIST="$VOLUME_LIST $vol"
+                   NEXT_LIST="$NEXT_LIST $vol"
-           fi
+               fi
-      else
+          else
-           VOLUME_LIST="$VOLUME_LIST $vol"
+               NEXT_LIST="$NEXT_LIST $vol"
-      fi
+          fi
+      done
+      VOLUME_LIST="$NEXT_LIST"
   done
 
+  # CREATE_DIRS holds every local filesystem path that must exist before
+  # startup. DATA_VOLUMES holds only the paths that are also appended as CLI
+  # args (bare absolute paths). Distributed URL-form endpoints are read from
+  # RUSTFS_VOLUMES by rustfs directly, so they must NOT be appended as args,
+  # but their local path component still has to exist on disk — otherwise
+  # LocalDisk init aborts with VolumeNotFound (rustfs no longer auto-creates
+  # the disk root).
+  CREATE_DIRS=""
   for vol in $VOLUME_LIST; do
     case "$vol" in
-      /*) DATA_VOLUMES="$DATA_VOLUMES $vol" ;;
+      /*)
-      *)  : ;; # skip non-absolute paths (including http(s):// URLs)
+        DATA_VOLUMES="$DATA_VOLUMES $vol"
+        CREATE_DIRS="$CREATE_DIRS $vol"
+        ;;
+      *://*)
+        # e.g. http://node0:9000/data/rustfs0 -> /data/rustfs0
+        vol_rest=${vol#*://}
+        case "$vol_rest" in
+          */*) CREATE_DIRS="$CREATE_DIRS /${vol_rest#*/}" ;;
+          *)   : ;; # URL without a path component; nothing local to create
+        esac
+        ;;
+      *)  : ;; # skip anything else we don't recognize
     esac
   done
 
-  echo "Initializing data directories:$DATA_VOLUMES"
+  echo "Initializing data directories:$CREATE_DIRS"
-  for vol in $DATA_VOLUMES; do
+  for vol in $CREATE_DIRS; do
     if [ ! -d "$vol" ]; then
       echo "  mkdir -p $vol"
       mkdir -p "$vol"