Admin: misc improvements on admin server and workers. EC now works. (#7055)

* initial design

* added simulation as tests

* reorganized the codebase to move the simulation framework and tests into their own dedicated package

* integration test. ec worker task

* remove "enhanced" reference

* start master, volume servers, filer

Current Status
✅ Master: Healthy and running (port 9333)
✅ Filer: Healthy and running (port 8888)
✅ Volume Servers: All 6 servers running (ports 8080-8085)
🔄 Admin/Workers: Will start when dependencies are ready

* generate write load

* tasks are assigned

* admin start wtih grpc port. worker has its own working directory

* Update .gitignore

* working worker and admin. Task detection is not working yet.

* compiles, detection uses volumeSizeLimitMB from master

* compiles

* worker retries connecting to admin

* build and restart

* rendering pending tasks

* skip task ID column

* sticky worker id

* test canScheduleTaskNow

* worker reconnect to admin

* clean up logs

* worker register itself first

* worker can run ec work and report status

but:
1. one volume should not be repeatedly worked on.
2. ec shards needs to be distributed and source data should be deleted.

* move ec task logic

* listing ec shards

* local copy, ec. Need to distribute.

* ec is mostly working now

* distribution of ec shards needs improvement
* need configuration to enable ec

* show ec volumes

* interval field UI component

* rename

* integration test with vauuming

* garbage percentage threshold

* fix warning

* display ec shard sizes

* fix ec volumes list

* Update ui.go

* show default values

* ensure correct default value

* MaintenanceConfig use ConfigField

* use schema defined defaults

* config

* reduce duplication

* refactor to use BaseUIProvider

* each task register its schema

* checkECEncodingCandidate use ecDetector

* use vacuumDetector

* use volumeSizeLimitMB

* remove

remove

* remove unused

* refactor

* use new framework

* remove v2 reference

* refactor

* left menu can scroll now

* The maintenance manager was not being initialized when no data directory was configured for persistent storage.

* saving config

* Update task_config_schema_templ.go

* enable/disable tasks

* protobuf encoded task configurations

* fix system settings

* use ui component

* remove logs

* interface{} Reduction

* reduce interface{}

* reduce interface{}

* avoid from/to map

* reduce interface{}

* refactor

* keep it DRY

* added logging

* debug messages

* debug level

* debug

* show the log caller line

* use configured task policy

* log level

* handle admin heartbeat response

* Update worker.go

* fix EC rack and dc count

* Report task status to admin server

* fix task logging, simplify interface checking, use erasure_coding constants

* factor in empty volume server during task planning

* volume.list adds disk id

* track disk id also

* fix locking scheduled and manual scanning

* add active topology

* simplify task detector

* ec task completed, but shards are not showing up

* implement ec in ec_typed.go

* adjust log level

* dedup

* implementing ec copying shards and only ecx files

* use disk id when distributing ec shards

🎯 Planning: ActiveTopology creates DestinationPlan with specific TargetDisk
📦 Task Creation: maintenance_integration.go creates ECDestination with DiskId
🚀 Task Execution: EC task passes DiskId in VolumeEcShardsCopyRequest
💾 Volume Server: Receives disk_id and stores shards on specific disk (vs.store.Locations[req.DiskId])
📂 File System: EC shards and metadata land in the exact disk directory planned

* Delete original volume from all locations

* clean up existing shard locations

* local encoding and distributing

* Update docker/admin_integration/EC-TESTING-README.md

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

* check volume id range

* simplify

* fix tests

* fix types

* clean up logs and tests

---------

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

weed/worker/tasks/balance/balance.go

@@ -1,6 +1,7 @@
 package balance
 
 import (
+	"context"
 	"fmt"
 	"time"
 
@@ -15,6 +16,9 @@ type Task struct {
 	server     string
 	volumeID   uint32
 	collection string
+
+	// Task parameters for accessing planned destinations
+	taskParams types.TaskParams
 }
 
 // NewTask creates a new balance task instance
@@ -30,7 +34,31 @@ func NewTask(server string, volumeID uint32, collection string) *Task {
 
 // Execute executes the balance task
 func (t *Task) Execute(params types.TaskParams) error {
-	glog.Infof("Starting balance task for volume %d on server %s (collection: %s)", t.volumeID, t.server, t.collection)
+	// Use BaseTask.ExecuteTask to handle logging initialization
+	return t.ExecuteTask(context.Background(), params, t.executeImpl)
+}
+
+// executeImpl is the actual balance implementation
+func (t *Task) executeImpl(ctx context.Context, params types.TaskParams) error {
+	// Store task parameters for accessing planned destinations
+	t.taskParams = params
+
+	// Get planned destination
+	destNode := t.getPlannedDestination()
+	if destNode != "" {
+		t.LogWithFields("INFO", "Starting balance task with planned destination", map[string]interface{}{
+			"volume_id":   t.volumeID,
+			"source":      t.server,
+			"destination": destNode,
+			"collection":  t.collection,
+		})
+	} else {
+		t.LogWithFields("INFO", "Starting balance task without specific destination", map[string]interface{}{
+			"volume_id":  t.volumeID,
+			"server":     t.server,
+			"collection": t.collection,
+		})
+	}
 
 	// Simulate balance operation with progress updates
 	steps := []struct {
@@ -46,18 +74,36 @@ func (t *Task) Execute(params types.TaskParams) error {
 	}
 
 	for _, step := range steps {
+		select {
+		case <-ctx.Done():
+			t.LogWarning("Balance task cancelled during step: %s", step.name)
+			return ctx.Err()
+		default:
+		}
+
 		if t.IsCancelled() {
+			t.LogWarning("Balance task cancelled by request during step: %s", step.name)
 			return fmt.Errorf("balance task cancelled")
 		}
 
-		glog.V(1).Infof("Balance task step: %s", step.name)
+		t.LogWithFields("INFO", "Executing balance step", map[string]interface{}{
+			"step":      step.name,
+			"progress":  step.progress,
+			"duration":  step.duration.String(),
+			"volume_id": t.volumeID,
+		})
 		t.SetProgress(step.progress)
 
 		// Simulate work
 		time.Sleep(step.duration)
 	}
 
-	glog.Infof("Balance task completed for volume %d on server %s", t.volumeID, t.server)
+	t.LogWithFields("INFO", "Balance task completed successfully", map[string]interface{}{
+		"volume_id":      t.volumeID,
+		"server":         t.server,
+		"collection":     t.collection,
+		"final_progress": 100.0,
+	})
 	return nil
 }
 
@@ -72,6 +118,19 @@ func (t *Task) Validate(params types.TaskParams) error {
 	return nil
 }
 
+// getPlannedDestination extracts the planned destination node from task parameters
+func (t *Task) getPlannedDestination() string {
+	if t.taskParams.TypedParams != nil {
+		if balanceParams := t.taskParams.TypedParams.GetBalanceParams(); balanceParams != nil {
+			if balanceParams.DestNode != "" {
+				glog.V(2).Infof("Found planned destination for volume %d: %s", t.volumeID, balanceParams.DestNode)
+				return balanceParams.DestNode
+			}
+		}
+	}
+	return ""
+}
+
 // EstimateTime estimates the time needed for the task
 func (t *Task) EstimateTime(params types.TaskParams) time.Duration {
 	// Base time for balance operation