[Bug 1925496] Re: nvme disk cannot be hotplugged after removal

[Klaus Jensen]

** Changed in: qemu
     Assignee: (unassigned) => Klaus Jensen (birkelund)

** Changed in: qemu
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1925496

Title:
  nvme disk cannot be hotplugged after removal

Status in QEMU:
  Confirmed

Bug description:
  Hello,

  When I try to re-add an nvme disk shortly after removing it, I get an
  error about duplicate ID.

  See the following commands to reproduce. This happens consistently on
  all VMs that I tested:

  
  attach
  ==========

  $VAR1 = {
            'arguments' => {
                             'command-line' => 'drive_add auto 
"file=/dev/zvol/rpool/data/vm-20000-disk-1,if=none,id=drive-nvme1,format=raw,cache=none,aio=native,detect-zeroes=on"'
                           },
            'execute' => 'human-monitor-command'
          };
  $VAR1 = {
            'execute' => 'device_add',
            'arguments' => {
                             'serial' => 'nvme1',
                             'drive' => 'drive-nvme1',
                             'driver' => 'nvme',
                             'id' => 'nvme1'
                           }
          };

  
  detach
  ===========
  $VAR1 = {
            'arguments' => {
                             'id' => 'nvme1'
                           },
            'execute' => 'device_del'
          };
  $VAR1 = {
            'execute' => 'human-monitor-command',
            'arguments' => {
                             'command-line' => 'drive_del drive-nvme1'
                           }
          };

  reattach
  ===========
  $VAR1 = {
            'arguments' => {
                             'command-line' => 'drive_add auto 
"file=/dev/zvol/rpool/data/vm-20000-disk-1,if=none,id=drive-nvme1,format=raw,cache=none,aio=native,detect-zeroes=on"'
                           },
            'execute' => 'human-monitor-command'
          };

  
  and I get:
  "Duplicate ID 'drive-nvme1' for drive"

  although it does not show up in query-block or query-pci anymore after
  the first detach.

  
  Is this a bug or am I missing something? Please advise.

  Best regards,
  Oguz

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