ping.ext_host: Only execute ext_host_get_cmd when it is not empty

qemu_img.rebase: correct the parameter

specify parameter name img_fmt when calling function _get_image_filename
Signed-off-by: NXueqiang Wei <xuwei@redhat.com>

`process.run` cannot pass empty command line and will raise IndexError,
only execute the ext_host_get_cmd if it is not empty.
Signed-off-by: NYihuang Yu <yihyu@redhat.com>

pktgen_perf: fix duplicate code

Signed-off-by: NWenli Quan <wquan@redhat.com>

pktgen_perf: add kernel-modules-internal install for rhel8

the pktgen module was moved to package kernel-modules-internal
instead for rhel8
Signed-off-by: NWenli Quan <wquan@redhat.com>

new case: Support memory protection key

Signed-off-by: NNana Liu <nanliu@redhat.com>

timedrift_check_clock_offset: add gagent_restart_cmd

nvme_plug: New case to test hot plug and unplug NVMe device

hv_tlbflush.py: Evaluate the execution time with flags "hv_tlbflush"

Using hv_tlbflush_code.exe tool to evaluate time.
Signed-off-by: NYu Wang <wyu@redhat.com>

remote_image_snapshot: Support curl storage backend

block_hotplug: Fix failed to insert scsi device into specified HBA

fio: Support nvme storage backend

Signed-off-by: NYongxue Hong <yhong@redhat.com>

New a case that hot plug and unplug with a NVMe device.
Signed-off-by: NYongxue Hong <yhong@redhat.com>

Signed-off-by: NZhenchao Liu <zhencliu@redhat.com>

block_iscsi_lvm: Assign unattended delivery method explicitly

Add test parameters to reduce debug.log output

Signed-off-by: NYongxue Hong <yhong@redhat.com>

Disable iothread explicitly for ppc64le and ppc64
since scsi-cd deivce doesn't support iothread.
Signed-off-by: NYongxue Hong <yhong@redhat.com>

hv_check_cpu_utilization: migration windows guest with all flags

check cpu utilization after migration
Signed-off-by: NYu Wang <wyu@redhat.com>

Improve virtio_scsi_variants test cases efficiency

block_multifunction: New test for hotplug block with multifunction

Failed to insert the SCSI device into the specified HBA controller
because that setting the params "drive_bus" is to specify the HBA
the controller then call method list_missing_named_buses of
DevContainer to search HBA is used by iterating DevContainer.__buses
list. But the __buses list didn't change after hotplugging since calling
images_define_by_params and calling simple_hotplug are not used by
matching way, so the __buses list is still using the same.
Signed-off-by: NYongxue Hong <yhong@redhat.com>

block_devices_plug: Fix 2 hotplug issues

1.debug.log is too big to load
2.Filter the output of tcpdump and bootps
Signed-off-by: NLei Yang <leiyang@redhat.com>

block_hotplug_in_pause: Add step to verify the deleted event

Signed-off-by: NQianqian Zhu <qizhu@redhat.com>

chardev:fix unclear error message

An unclear error message will mislead us to debug
error difficultly.
Signed-off-by: NNana Liu <nanliu@redhat.com>

1.Increase vm monitor login timeout
2.Decrease disk number for virtio_scsi_variants
Signed-off-by: Nqingwangrh <qinwang@redhat.com>

Assign unattended delivery method to cdrom explicitly in the
scenarios where unatteneded install guest OS form extra cdrom.
Signed-off-by: NYongxue Hong <yhong@redhat.com>

There are 2 issues:
1. Only pci device should be assigned a bus when been hot plugged,
-dirve/-blockdev should not have a bus.
2. It should make sure that the device is a QDevice before check
if it is pci device. -object for luks should be skipped.
Signed-off-by: NYongxue Hong <yhong@redhat.com>
Signed-off-by: NQianqian Zhu <qizhu@redhat.com>

Signed-off-by: NQianqian Zhu <qizhu@redhat.com>

Add the nbd image export/access test cases