Bug 2001587

QE bot(pre verify): Set 'Verified:Tested,SanityOnly' as gating/tier1 test pass.

Passed test on

Red Hat Enterprise Linux release 8.4 (Ootpa)
4.18.0-305.el8.x86_64
qemu-kvm-4.2.0-48.module+el8.4.0+14414+82a75069.5.x86_64
seabios-bin-1.13.0-2.module+el8.3.0+7353+9de0a3cc.noarch
edk2-ovmf-20200602gitca407c7246bf-4.el8.noarch
virtio-win-prewhql-0.1-215.iso


1.create scsi_debug disk 128
modprobe scsi_debug  dev_size_mb=128

2.create mapper device with 5 minutes delay on the disk
disk=/dev/sdb
dmsetup create test << EOF
0 160000 linear ${disk} 0
160000 5 delay ${disk} 160000 0 ${disk} 160000 300000
160005 80000 linear ${disk} 160005
EOF

3.expose mapper device with iscsi target
o- / ..................................................................... [...]
  o- backstores .......................................................... [...]
  | o- block .............................................. [Storage Objects: 1]
  | | o- disk0 .............. [/dev/mapper/test (117.2MiB) write-thru activated]
  | |   o- alua ............................................... [ALUA Groups: 1]
  | |     o- default_tg_pt_gp ................... [ALUA state: Active/optimized]
  | o- fileio ............................................. [Storage Objects: 0]
  | o- pscsi .............................................. [Storage Objects: 0]
  | o- ramdisk ............................................ [Storage Objects: 0]
  o- iscsi ........................................................ [Targets: 1]
  | o- iqn.2016-06.one.server:block .................................. [TPGs: 1]
  |   o- tpg1 ........................................... [no-gen-acls, no-auth]
  |     o- acls ...................................................... [ACLs: 1]
  |     | o- iqn.1994-05.com.redhat:clientb ................... [Mapped LUNs: 1]
  |     |   o- mapped_lun0 ............................. [lun0 block/disk0 (rw)]
  |     o- luns ...................................................... [LUNs: 1]
  |     | o- lun0 .......... [block/disk0 (/dev/mapper/test) (default_tg_pt_gp)]
  |     o- portals ................................................ [Portals: 1]
  |       o- 0.0.0.0:3260 ................................................. [OK]
  o- loopback ..................................................... [Targets: 0

4. attach disk on [other] host

sdc -> iscsi

5.boot vm with passthrough disk

/usr/libexec/qemu-kvm \
  -name testvm \
  -machine pc \
  -m 8G \
  -smp 8 \
  -cpu host,+kvm_pv_unhalt \
  -device ich9-usb-ehci1,id=usb1 \
  -device usb-tablet,id=usb-tablet1,bus=usb1.0,port=1 \
  -device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0xa \
  -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x6 \
  -blockdev driver=qcow2,file.driver=file,file.filename=/home/kvm_autotest_root/images/rhel840-64-virtio-scsi.qcow2,node-name=os_image1   \
  -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x7,drive=os_image1,id=virtio-disk0,bootindex=1 \
  \
  -blockdev driver=raw,file.driver=host_device,file.filename=/dev/sdc,node-name=data1   \
  -device scsi-block,bus=scsi0.0,drive=data1,id=disk1,bootindex=2 \
  \
  -vnc :5 \
  -qmp tcp:0:5955,server,nowait \
  -monitor stdio \
  -netdev \
  tap,id=hostnet0,vhost=on \
  -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:dd:0a:82,bus=pci.0


6. execute io on guest and step in low speed write status

dev=sda
if [ "x$1" != "x" ];then
dev=$1
fi
echo "$dev"
while true;do
sg_dd if=/dev/zero of=/dev/$dev bs=1M count=100 oflag=direct
echo "do dd"
done

7.find the qemu process and kill it
pid=`pgrep qemu-kvm`;echo $pid;  kill -9 $pid
time while true;do if ps $pid; then sleep 10;echo "active";else echo "exit";break;fi done

The kill time is about 3m30s

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (virt:rhel and virt-devel:rhel bug fix update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2022:4815