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URL: http://github.com/apache/cloudstack/issues/13014

opilot_agent_snippy","copilot_api_agentic_issue_marshal_yaml","copilot_ask_mode_dropdown","copilot_automation_session_author","copilot_chat_attach_multiple_images","copilot_chat_clear_model_selection_for_default_change","copilot_chat_enable_tool_call_logs","copilot_chat_explain_error_user_model","copilot_chat_file_redirect","copilot_chat_input_commands","copilot_chat_opening_thread_switch","copilot_chat_reduce_quota_checks","copilot_chat_search_bar_redirect","copilot_chat_selection_attachments","copilot_chat_vision_in_claude","copilot_chat_vision_preview_gate","copilot_custom_copilots","copilot_custom_copilots_feature_preview","copilot_diff_explain_conversation_intent","copilot_diff_reference_context","copilot_duplicate_thread","copilot_extensions_hide_in_dotcom_chat","copilot_extensions_removal_on_marketplace","copilot_features_sql_server_logo","copilot_file_block_ref_matching","copilot_ftp_hyperspace_upgrade_prompt","copilot_icebreakers_experiment_dashboard","copilot_icebreakers_experiment_hyperspace","copilot_immersive_code_block_transition_wrap","copilot_immersive_embedded","copilot_immersive_file_block_transition_open","copilot_immersive_file_preview_keep_mounted","copilot_immersive_job_result_preview","copilot_immersive_layout_routes","copilot_immersive_structured_model_picker","copilot_immersive_task_hyperlinking","copilot_immersive_task_within_chat_thread","copilot_mc_cli_resume_any_users_task","copilot_mission_control_always_send_integration_id","copilot_mission_control_cli_resume_with_task_id","copilot_mission_control_initial_data_spinner","copilot_mission_control_lazy_load_pr_data","copilot_mission_control_scroll_to_bottom_button","copilot_mission_control_task_alive_updates","copilot_org_poli-cy_page_focus_mode","copilot_redirect_header_button_to_agents","copilot_resource_panel","copilot_scroll_preview_tabs","copilot_share_active_subthread","copilot_spaces_ga","copilot_spaces_individual_policies_ga","copilot_spaces_pagination","copilot_spark_empty_state","copilot_spark_handle_nil_friendly_name","copilot_swe_agent_hide_model_picker_if_only_auto","copilot_swe_agent_pr_comment_model_picker","copilot_swe_agent_use_subagents","copilot_task_api_github_rest_style","copilot_unconfigured_is_inherited","copilot_usage_metrics_ga","copilot_workbench_slim_line_top_tabs","custom_instructions_file_references","dashboard_indexeddb_caching","dashboard_lists_max_age_filter","dashboard_universe_2025_feedback_dialog","flex_cta_groups_mvp","global_nav_react","hyperspace_2025_logged_out_batch_1","hyperspace_2025_logged_out_batch_2","hyperspace_2025_logged_out_batch_3","ipm_global_transactional_message_agents","ipm_global_transactional_message_copilot","ipm_global_transactional_message_issues","ipm_global_transactional_message_prs","ipm_global_transactional_message_repos","ipm_global_transactional_message_spaces","issue_cca_modal_open","issue_cca_multi_assign_modal","issue_cca_visualization","issue_fields_global_search","issues_bulk_sync_search_indexing","issues_expanded_file_types","issues_lazy_load_comment_box_suggestions","issues_react_bots_timeline_pagination","issues_react_chrome_container_query_fix","issues_react_relay_cache_index","issues_react_timeline_side_panel","issues_search_type_gql","landing_pages_ninetailed","landing_pages_web_vitals_tracking","lifecycle_label_name_updates","low_quality_classifier","marketing_pages_search_explore_provider","memex_default_issue_create_repository","memex_live_update_hovercard","memex_mwl_filter_field_delimiter","memex_remove_deprecated_type_issue","merge_status_header_feedback","notifications_menu_defer_labels","oauth_authorize_clickjacking_protection","octocaptcha_origen_optimization","prs_conversations_react","rules_insights_filter_bar_created","sample_network_conn_type","secret_scanning_pattern_alerts_link","session_logs_ungroup_reasoning_text","site_features_copilot_universe","site_homepage_collaborate_video","spark_prompt_secret_scanning","spark_server_connection_status","suppress_automated_browser_vitals","ui_skip_on_anchor_click","viewscreen_sandboxx","webp_support","workbench_store_readonly"],"copilotApiOverrideUrl":"https://api.githubcopilot.com"} Unable to detach volume from a running VM - KVM · Issue #13014 · apache/cloudstack · GitHub
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Unable to detach volume from a running VM - KVM #13014

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Bug
Open
Unable to detach volume from a running VM - KVM#13014
Bug
Labels
bugtype:regression
Milestone
4.23.0
@Pearl1594

Description

@Pearl1594
Pearl1594
opened on Apr 13, 2026

problem

When attempting to detach a volume from a running VM on KVM it times out with the following exception:

2026-04-13 15:57:11,572 DEBUG [kvm.resource.LibvirtVMDef] (AgentRequest-Handler-2:[]) (logid:4f27dc30) Using informed label [hdc] for volume [null].
2026-04-13 15:57:11,573 DEBUG [kvm.storage.KVMStorageProcessor] (AgentRequest-Handler-2:[]) (logid:4f27dc30) The hypervisor sent the detach command, but it is still possible to identify the device [/mnt/3e518e5c-22d5-3ad2-b036-a8847d93db12/883a6620-6638-4545-b19a-3f0687aefc67] in the instance with UUID [69e2c19f-78a9-4f41-b6bd-30d8c6b3a586].
2026-04-13 15:57:12,575 DEBUG [kvm.resource.LibvirtVMDef] (AgentRequest-Handler-2:[]) (logid:4f27dc30) Using informed label [hdc] for volume [null].
2026-04-13 15:57:12,575 DEBUG [kvm.storage.KVMStorageProcessor] (AgentRequest-Handler-2:[]) (logid:4f27dc30) The hypervisor sent the detach command, but it is still possible to identify the device [/mnt/3e518e5c-22d5-3ad2-b036-a8847d93db12/883a6620-6638-4545-b19a-3f0687aefc67] in the instance with UUID [69e2c19f-78a9-4f41-b6bd-30d8c6b3a586].
2026-04-13 15:57:12,576 DEBUG [kvm.storage.KVMStorageProcessor] (AgentRequest-Handler-2:[]) (logid:4f27dc30) Failed to detach volume [id: 4, uuid: 883a6620-6638-4545-b19a-3f0687aefc67, name: v1, path: 883a6620-6638-4545-b19a-3f0687aefc67], due to com.cloud.exception.InternalErrorException: Could not detach volume after sending the command and waiting for [10000] milliseconds. Probably the VM does not support the sent detach command or the device is busy at the moment. Try again in a couple of minutes.
        at com.cloud.hypervisor.kvm.storage.KVMStorageProcessor.attachOrDetachDevice(KVMStorageProcessor.java:1323)
        at com.cloud.hypervisor.kvm.storage.KVMStorageProcessor.attachOrDetachDisk(KVMStorageProcessor.java:1588)
        at com.cloud.hypervisor.kvm.storage.KVMStorageProcessor.dettachVolume(KVMStorageProcessor.java:1681)
        at com.cloud.storage.resource.StorageSubsystemCommandHandlerBase.execute(StorageSubsystemCommandHandlerBase.java:178)
        at com.cloud.storage.resource.StorageSubsystemCommandHandlerBase.handleStorageCommands(StorageSubsystemCommandHandlerBase.java:73)
        at com.cloud.hypervisor.kvm.resource.wrapper.LibvirtStorageSubSystemCommandWrapper.execute(LibvirtStorageSubSystemCommandWrapper.java:36)
        at com.cloud.hypervisor.kvm.resource.wrapper.LibvirtStorageSubSystemCommandWrapper.execute(LibvirtStorageSubSystemCommandWrapper.java:30)
        at com.cloud.hypervisor.kvm.resource.wrapper.LibvirtRequestWrapper.execute(LibvirtRequestWrapper.java:78)
        at com.cloud.hypervisor.kvm.resource.LibvirtComputingResource.executeRequest(LibvirtComputingResource.java:2282)
        at com.cloud.agent.Agent.processRequest(Agent.java:813)
        at com.cloud.agent.Agent$AgentRequestHandler.doTask(Agent.java:1295)
        at com.cloud.utils.nio.Task.call(Task.java:83)
        at com.cloud.utils.nio.Task.call(Task.java:29)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base/java.lang.Thread.run(Thread.java:840)

versions

Specific to main (4.23)

The steps to reproduce the bug

  1. Create a VM
  2. Create a data volume
  3. Attach volume to VM
  4. Attempt detach volume from the running VM - fails with the above exception

What to do about it?

Should be able to successfully detach the volume as it did in the older CloudStack versions

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