shell: make every -collection flag parse the same way (#11794)

* shell: make every -collection flag parse the same way

The filter vocabulary (comma-separated names, wildcards, regexes,
"_default" for the empty-named collection) already existed in
wildcard.CompileCollectionMatcher, but several commands still did their
own exact-match comparison or sent the raw flag value to servers.

fs.mergeVolumes used a literal string compare, so -collection=_default
silently produced an empty merge plan; it now uses the shared matcher
while keeping "*" as the match-all default. volume.fsck and volume.mark
filter through the matcher too, and volume.vacuum resolves the filter
client-side into per-collection and per-volume requests, since no
Collection value scopes the VacuumVolume RPC to the unnamed collection
alone.

Commands that put one concrete collection name on the wire normalize
"_default" to "" (volume.grow, fs.configure, mq.topic.compact,
collection.delete, ec.rebuild, ec.balance), and the tier -volumeId
commands resolve the volume's actual collection from topology first so
patterns and named-collection requests pass the volume server's
collection check.

* shell: spell the default-collection keyword via CollectionDefault

* shell: address review findings on collection filter handling

volume.fsck keeps a set of every volume the master knows before any
filtering, so a filer entry whose volume was excluded by -collection or
-volumeId is skipped instead of reported "volume not found" and deleted
by -reallyDeleteFilerEntries. The collection filter also no longer
scopes the filer walk to /buckets/<collection>: fs.configure can bind a
collection to any path prefix, and a narrower walk could mark live
chunks as orphans under -reallyDeleteFromVolume.

ec.rebuild and ec.balance resolve -collection through the new
wildcard.ExpandCollectionFilter, which passes literal names through even
when the master does not list them — ec.rebuild must be able to recover
a collection whose shards all lost their index and never registered.

fs.configure and mq.topic.compact now reject _default outright: an empty
Collection means "unset" in both the path-rule merge and the filer's
storage-option fallback chain, so the keyword would have been silently
ignored.

The unnamed-collection vacuum sweep keeps the master's low-disk-space
exception: a volume whose every replica is read-only is probed with
VacuumVolumeCheck and stays eligible when a replica reports
DiskSpaceLow, instead of being dropped outright.

weed/shell/command_volume_mark.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/seaweedfs/seaweedfs/weed/pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
+	"github.com/seaweedfs/seaweedfs/weed/util/wildcard"
 
 	"github.com/seaweedfs/seaweedfs/weed/storage/needle"
 )
@@ -47,7 +48,7 @@ func (c *commandVolumeMark) Do(args []string, commandEnv *CommandEnv, writer io.
 	volMarkCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
 	volumeIdInt := volMarkCommand.Int("volumeId", 0, "the volume id")
 	nodeStr := volMarkCommand.String("node", "", "the volume server <host>:<port>")
-	collection := volMarkCommand.String("collection", "", "the collection name")
+	collection := volMarkCommand.String("collection", "", "comma-separated collection names, wildcards, or regex patterns; \""+CollectionDefault+"\" for the collection with no name")
 	writable := volMarkCommand.Bool("writable", false, "volume mark writable")
 	readonly := volMarkCommand.Bool("readonly", false, "volume mark readonly")
 	readonlyCanDelete := volMarkCommand.Bool("readonlyCanDelete", false, "volume mark readonly but still accepting deletes")
@@ -137,11 +138,9 @@ func collectVolumeMarkTargetsByCollection(topoInfo *master_pb.TopologyInfo, coll
 	if collection == "" {
 		return nil, fmt.Errorf("collection is required")
 	}
-
-	// _default targets volumes that belong to no named collection.
-	matchCollection := collection
-	if matchCollection == CollectionDefault {
-		matchCollection = ""
+	collectionMatcher, err := wildcard.CompileCollectionMatcher(collection)
+	if err != nil {
+		return nil, fmt.Errorf("invalid collection pattern %q: %w", collection, err)
 	}
 
 	var targets []volumeMarkTarget
@@ -152,7 +151,7 @@ func collectVolumeMarkTargetsByCollection(topoInfo *master_pb.TopologyInfo, coll
 		sourceVolumeServer := pb.NewServerAddressFromDataNode(dn)
 		for _, diskInfo := range dn.GetDiskInfos() {
 			for _, v := range diskInfo.GetVolumeInfos() {
-				if v.GetCollection() == matchCollection {
+				if collectionMatcher.Matches(v.GetCollection()) {
 					targets = append(targets, volumeMarkTarget{
 						volumeId:           needle.VolumeId(v.GetId()),
 						sourceVolumeServer: sourceVolumeServer,
@@ -162,7 +161,7 @@ func collectVolumeMarkTargetsByCollection(topoInfo *master_pb.TopologyInfo, coll
 		}
 	})
 	if len(targets) == 0 {
-		return nil, fmt.Errorf("collection %s has no volumes", collection)
+		return nil, fmt.Errorf("no volumes match collection %s", collection)
 	}
 	return targets, nil
 }