RosiKyu commented on PR #10957:
URL: https://github.com/apache/cloudstack/pull/10957#issuecomment-3800710940
### TC1: Cold Volume Migration Without Secondary Storage Selector
**Objective**
Verify that cold volume migration uses the secondary storage with the most
free capacity when no secondary storage selector (heuristic rule) is configured
for VOLUME type.
**Test Steps**
1. Verified no secondary storage selector exists for VOLUME type in the zone
2. Confirmed three secondary storages exist with equal capacity (~1.08 TB
free each)
3. Started tail on management-server.log to capture secondary storage
selection
4. Executed cold migration of test-vol-1 from primary storage pri2 to pri1
5. Verified migration completed successfully and observed log output
**Expected Result:**
- Migration should complete successfully
- Log should show: "Secondary storage selector did not direct volume
migration to a specific secondary storage; using secondary storage with the
most free capacity."
- System should select sec1 (first storage with most/equal free capacity)
**Actual Result:**
- Migration completed successfully ✓
- Volume test-vol-1 migrated from pri2 to pri1 ✓
- Log confirmed: "Secondary storage selector did not direct volume migration
to a specific secondary storage; using secondary storage with the most free
capacity." ✓
- System used sec1 (id:1, uuid: 27cfbb80-8eda-4403-8ac8-9572c7edd2b7) as
staging storage ✓
**Test Evidence:**
Pre-migration check - No VOLUME selector exists:
```
(localcloud) 🐱 > list secondarystorageselectors
zoneid=0ec45e01-e0b0-4fbf-a6e8-7bb81dd480e2 type=VOLUME
(localcloud) 🐱 >
```
Secondary storage capacity (all equal):
```
(localcloud) 🐱 > list imageStores zoneid=0ec45e01-e0b0-4fbf-a6e8-7bb81dd480e2
{
"count": 3,
"imagestore": [
{
"disksizetotal": 2898029182976,
"disksizeused": 1707413078016,
"id": "27cfbb80-8eda-4403-8ac8-9572c7edd2b7",
"name":
"NFS://10.0.32.4/acs/secondary/ref-trl-10723-k-Mol9-rositsa-kyuchukova/ref-trl-10723-k-Mol9-rositsa-kyuchukova-sec1",
"protocol": "nfs"
},
{
"disksizetotal": 2898029182976,
"disksizeused": 1707413078016,
"id": "6062156f-b9f3-417a-bdd9-202fc5bce258",
"name":
"NFS://10.0.32.4/acs/secondary/ref-trl-10723-k-Mol9-rositsa-kyuchukova/ref-trl-10723-k-Mol9-rositsa-kyuchukova-sec2",
"protocol": "nfs"
},
{
"disksizetotal": 2898029182976,
"disksizeused": 1707413078016,
"id": "910cc03a-0b37-4a4d-a3f6-968cff43c3c2",
"name":
"NFS://10.0.32.4/acs/secondary/ref-trl-10723-k-Mol9-rositsa-kyuchukova/ref-trl-10723-k-Mol9-rositsa-kyuchukova-sec3",
"protocol": "nfs"
}
]
}
```
Migration command and result:
```
(localcloud) 🐱 > migrate volume
volumeid=08caf0fa-ba34-43aa-addd-f415854c854a
storageid=f55f0783-0351-329c-bd4f-8a9b81e4acbd
{
"volume": {
"id": "08caf0fa-ba34-43aa-addd-f415854c854a",
"name": "test-vol-1",
"state": "Ready",
"storage": "ref-trl-10723-k-Mol9-rositsa-kyuchukova-kvm-pri1",
"storageid": "f55f0783-0351-329c-bd4f-8a9b81e4acbd"
}
}
```
Management server log showing secondary storage selection:
```
2026-01-26 16:59:21,409 DEBUG [o.a.c.s.m.AncientDataMotionStrategy]
(Work-Job-Executor-7:[ctx-ae1d605d, job-46/job-47, ctx-cd5b4539])
(logid:99a6f633) copyAsync inspecting src type VOLUME copyAsync inspecting dest
type VOLUME
2026-01-26 16:59:21,409 DEBUG [o.a.c.s.m.AncientDataMotionStrategy]
(Work-Job-Executor-7:[ctx-ae1d605d, job-46/job-47, ctx-cd5b4539])
(logid:99a6f633) About to MIGRATE copy between datasources
2026-01-26 16:59:21,410 DEBUG [o.a.c.s.m.AncientDataMotionStrategy]
(Work-Job-Executor-7:[ctx-ae1d605d, job-46/job-47, ctx-cd5b4539])
(logid:99a6f633) MIGRATE copy using copyVolumeBetweenPools STARTING
2026-01-26 16:59:21,414 DEBUG [o.a.c.s.m.AncientDataMotionStrategy]
(Work-Job-Executor-7:[ctx-ae1d605d, job-46/job-47, ctx-cd5b4539])
(logid:99a6f633) Secondary storage selector did not direct volume migration to
a specific secondary storage; using secondary storage with the most free
capacity.
2026-01-26 16:59:21,417 DEBUG [c.c.s.StatsCollector]
(Work-Job-Executor-7:[ctx-ae1d605d, job-46/job-47, ctx-cd5b4539])
(logid:99a6f633) Verifying image storage [ImageStore
{"id":1,"name":"NFS:\/\/10.0.32.4\/acs\/secondary\/ref-trl-10723-k-Mol9-rositsa-kyuchukova\/ref-trl-10723-k-Mol9-rositsa-kyuchukova-sec1","uuid":"27cfbb80-8eda-4403-8ac8-9572c7edd2b7"}].
Capacity: total=[2.6357 TB], used=[1.5535 TB], threshold=[95.00%].
2026-01-26 16:59:22,732 DEBUG [o.a.c.s.m.AncientDataMotionStrategy]
(Work-Job-Executor-7:[ctx-ae1d605d, job-46/job-47, ctx-cd5b4539])
(logid:99a6f633) MIGRATE copy using copyVolumeBetweenPools DONE: true
```
**Status: PASSED**
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