1. Monitor events on both source and target host:
    # virsh event --loop --all

2.Do migration:

    # virsh migrate vm2 qemu+ssh://X.X.X.com/system --persistent --verbose --live --p2p --bandwidth 5 --postcopy

3. Switch to postcopy before migration completes:

    # virsh migrate-postcopy vm2

4.Abort postcopy migraiton before migration completes:

    # virsh domjobabort vm2 --postcopy
    error: Requested operation is not valid: domain is not running

5.Recover postcopy migraiton:

    # virsh migrate vm2 qemu+ssh://X.X.X.com/system --persistent --verbose --live --p2p --bandwidth 5 --postcopy --postcopy-resume
    error: operation failed: job 'migration in' failed in post-copy phase

6.Try Recover postcopy again:

    # virsh migrate vm2 qemu+ssh://X.X.X.com/system --persistent --verbose --live --p2p --bandwidth 5 --postcopy --postcopy-resume
    error: Requested operation is not valid: QEMU reports migration is still running

7.After a few minutes, the guest was running on target host and shutdown on the source guest

8. Check the events on both source and target host:

    Source host:

    # virsh event --all --loop
    event 'migration-iteration' for domain 'vm2': iteration: '1'
    event 'lifecycle' for domain 'vm2': Suspended Migrated
    event 'lifecycle' for domain 'vm2': Suspended Post-copy
    event 'migration-iteration' for domain 'vm2': iteration: '2'
    event 'lifecycle' for domain 'vm2': Suspended Post-copy Error
    *event 'lifecycle' for domain 'vm2': Suspended Post-copy*
    *event 'lifecycle' for domain 'vm2': Suspended Post-copy Error*
    event 'lifecycle' for domain 'vm2': Stopped Migrated
    event 'job-completed' for domain 'vm2':
        operation: 5
        time_elapsed: 21752
        downtime: 184
        setup_time: 160
        data_total: 2160803840
        data_processed: 45301213
        data_remaining: 2112503808
        memory_total: 2160803840
        memory_processed: 45301213
        memory_remaining: 2112503808
        memory_bps: 5257170
        memory_constant: 3014
        memory_normal: 8832
        memory_normal_bytes: 36175872
        memory_dirty_rate: 7
        memory_iteration: 2
        memory_postcopy_requests: 0
        memory_page_size: 4096
        disk_total: 0
        disk_processed: 0
        disk_remaining: 0

    target host:

    # virsh event --all --loop
    event 'agent-lifecycle' for domain 'vm2': state: 'disconnected' reason: 'domain started'
    event 'lifecycle' for domain 'vm2': Started Migrated
    event 'agent-lifecycle' for domain 'vm2': state: 'disconnected' reason: 'channel event'
    event 'lifecycle' for domain 'vm2': Defined Updated
    event 'lifecycle' for domain 'vm2': Resumed Post-copy
    event 'agent-lifecycle' for domain 'vm2': state: 'connected' reason: 'channel event'
    event 'lifecycle' for domain 'vm2': Resumed Post-copy Error
    event 'lifecycle' for domain 'vm2': Resumed Post-copy
    event 'lifecycle' for domain 'vm2': Resumed Migrated

 # cat /var/log/libvirt/libvirtd.log | grep -i error
2024-01-19 07:56:08.323+0000: 87228: error : virNetClientProgramDispatchError:170 : operation failed: job 'migration in' failed in post-copy phase
2024-01-19 07:56:08.335+0000: 87228: debug : virNetServerProgramSendError:147 : prog=536903814 ver=1 proc=305 type=1 serial=11 msg=0x55eac5a72f60 rerr=0x7f487ddfa9a0
2024-01-19 07:56:14.740+0000: 89328: debug : qemuMonitorJSONIOProcessLine:191 : Line [{"return": {"status": "postcopy-paused", "setup-time": 171, "error-desc": "Postcopy migration is paused by the user", "downtime": 192, "total-time": 10816, "ram": {"total": 2160803840, "postcopy-requests": 260, "dirty-sync-count": 2, "multifd-bytes": 0, "pages-per-second": 28666, "downtime-bytes": 0, "page-size": 4096, "remaining": 101707776, "postcopy-bytes": 97200224, "mbps": 940.56274285714289, "transferred": 114720833, "dirty-sync-missed-zero-copy": 0, "precopy-bytes": 16828994, "duplicate": 475968, "dirty-pages-rate": 0, "skipped": 0, "normal-bytes": 109531136, "normal": 26741}}, "id": "libvirt-463"}]
2024-01-19 07:56:14.740+0000: 89328: info : qemuMonitorJSONIOProcessLine:210 : QEMU_MONITOR_RECV_REPLY: mon=0x7f486804ed00 reply=\{"return": {"status": "postcopy-paused", "setup-time": 171, "error-desc": "Postcopy migration is paused by the user", "downtime": 192, "total-time": 10816, "ram": {"total": 2160803840, "postcopy-requests": 260, "dirty-sync-count": 2, "multifd-bytes": 0, "pages-per-second": 28666, "downtime-bytes": 0, "page-size": 4096, "remaining": 101707776, "postcopy-bytes": 97200224, "mbps": 940.56274285714289, "transferred": 114720833, "dirty-sync-missed-zero-copy": 0, "precopy-bytes": 16828994, "duplicate": 475968, "dirty-pages-rate": 0, "skipped": 0, "normal-bytes": 109531136, "normal": 26741}}, "id": "libvirt-463"}
2024-01-19 07:56:14.766+0000: 87226: error : virNetClientProgramDispatchError:170 : operation failed: job 'migration in' failed in post-copy phase
2024-01-19 07:56:14.778+0000: 87226: debug : virNetServerProgramSendError:147 : prog=536903814 ver=1 proc=305 type=1 serial=11 msg=0x55eac5a6d390 rerr=0x7f487edfc9a0