fix: support SharedMountPoint volume checks for importVm

[prashanthr2]

Summary

• allow KVM CheckVolumeCommand validation for SharedMountPoint pools used by importVm
• keep SharedMountPoint aligned with the existing file-based storage handling used for NFS/filesystem pools

Fixes #12944

Testing

• Not run locally in this environment (mvn not available)

[boring-cyborg]

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[weizhouapache]

code lgtm

not tested yet

[weizhouapache]

@prashanthr2
maybe rebase with 4.22 ?

[harikrishna-patnala]

@blueorangutan package

[blueorangutan]

@harikrishna-patnala a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

[blueorangutan]

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ el10 ✔️ debian ✔️ suse15. SL-JID 17341

[blueorangutan]

[SF] Trillian test result (tid-15808)
Environment: kvm-alma9 (x2), zone: Advanced Networking with Mgmt server a9
Total time taken: 54064 seconds
Marvin logs: https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr12946-t15808-kvm-alma9.zip
Smoke tests completed. 148 look OK, 1 have errors, 0 did not run
Only failed and skipped tests results shown below:

Test	Result	Time (s)	Test File
test_01_deployVMInSharedNetwork	Failure	246.61	test_network.py

[blueorangutan]

[LL] Trillian Build Failed (tid-7185)

[blueorangutan]

[LL] Trillian Build Failed (tid-7188)

[rajujith]

@prashanthr2
Import VM works.

Import Volume doesn't show any primary storage NFS and sharedmount as well in UI.

API for import volume fails:

(localcloud) 🐱 > import volume storageid=ef5cb028-27cc-4c03-8046-77f03209e29b path=data1.qcow2 diskofferingid=1f10a877-5026-45e5-9554-8e2443c29369 name=data1
{
  "account": "admin",
  "accountid": "6f603367-33d8-11f1-bb73-1e0090000b68",
  "cmd": "org.apache.cloudstack.api.command.admin.volume.ImportVolumeCmd",
  "completed": "2026-04-09T06:30:02+0000",
  "created": "2026-04-09T06:30:02+0000",
  "domainid": "b57f0ddf-33d7-11f1-bb73-1e0090000b68",
  "domainpath": "ROOT",
  "jobid": "d8cbbee7-2d31-4caa-9023-9d7adfde7d91",
  "jobprocstatus": 0,
  "jobresult": {
    "errorcode": 530,
    "errortext": "Importing and unmanaging volume are not supported for pool type SharedMountPoint on hypervisor KVM"
  },
  "jobresultcode": 530,
  "jobresulttype": "object",
  "jobstatus": 2,
  "userid": "6f611500-33d8-11f1-bb73-1e0090000b68"
}
🙈 Error: async API failed for job d8cbbee7-2d31-4caa-9023-9d7adfde7d91

[prashanthr2]

@rajujith FIx for ImportVolume was submitted here #12956

[rajujith]

LGTM

[boring-cyborg]

Awesome work, congrats on your first merged pull request!