[PVE-User] Proxmox 6 - disk problem

[lord_Niedzwiedz]

CPU usage    0.04% of 32 CPU(s)
_/*IO delay    20.38%        !!*/_
Load average    37.97,37.26,30.31
RAM usage    45.25% (56.93 GiB of 125.81 GiB)
KSM sharing    0 B
HD space(root)    0.53% (1.32 GiB of 247.29 GiB)
SWAP usage        N/A
CPU(s)        32 x AMD EPYC 7281 16-Core Processor (1 Socket)
Kernel Version        Linux 5.0.15-1-pve #1 SMP PVE 5.0.15-1 (Wed, 03 
Jul 2019 10:51:57 +0200)
PVE Manager Version        pve-manager/6.0-4/2a719255

Proxmox working very slowly.
I stop all VM.

htop -    say nothing
iotop    -    say nothing


If i try command:
# sync
- shell waiting !! ;/


This same too:
root at tomas:~# pveperf
CPU BOGOMIPS:      134377.28
REGEX/SECOND:      2100393
HD SIZE:           247.29 GB (rpool/ROOT/pve-1)
FSYNCS/SECOND:     531.28

^C^Z
[1]+  Stopped                 pveperf
root at tomas:~# ^C

_/*After this:*/__/*    IO delay         40%*/_


In a phisical console i heave:
INFO: task zwol:554 blocked for more than 120 seconds.
Tainted:    P    0    5.0.15-1-pve #1
"echo 0 > /prox/sys/kernel/hung_task_timeout_sec" disables this message.
INFO: task txg_quiesce:1007 blocked for more than 120 seconds.
Tainted:    P    0    5.0.15-1-pve #1
"echo 0 > /prox/sys/kernel/hung_task_timeout_sec" disables this message.
INFO: task kvm:27326 blocked for more than 120 seconds.
Tainted:    P    0    5.0.15-1-pve #1
"echo 0 > /prox/sys/kernel/hung_task_timeout_sec" disables this message.
INFO: task kvm:8930 blocked for more than 120 seconds.
Tainted:    P    0    5.0.15-1-pve #1
"echo 0 > /prox/sys/kernel/hung_task_timeout_sec" disables this message.
INFO: task zvol:26963 blocked for more than 120 seconds.
Tainted:    P    0    5.0.15-1-pve #1
"echo 0 > /prox/sys/kernel/hung_task_timeout_sec" disables this message.
INFO: task zvol:26967 blocked for more than 120 seconds.
Tainted:    P    0    5.0.15-1-pve #1
"echo 0 > /prox/sys/kernel/hung_task_timeout_sec" disables this message.
INFO: task zvol:26972 blocked for more than 120 seconds.
Tainted:    P    0    5.0.15-1-pve #1
"echo 0 > /prox/sys/kernel/hung_task_timeout_sec" disables this message.
INFO: task zvol:26974 blocked for more than 120 seconds.
Tainted:    P    0    5.0.15-1-pve #1
"echo 0 > /prox/sys/kernel/hung_task_timeout_sec" disables this message.
INFO: task zvol:26976 blocked for more than 120 seconds.
Tainted:    P    0    5.0.15-1-pve #1
"echo 0 > /prox/sys/kernel/hung_task_timeout_sec" disables this message.
INFO: task zvol:26980 blocked for more than 120 seconds.

At the restart on end i heave:
[  !!  ]  Froceibly rebooting: Ctrl-Alt-Del was pressed more than 7 
times within 2s
Systemd-shutdown[1]: Syncing filesystems and block devices - time out, 
issuing SIGKILL to PID 3940.
Started bpfilter
pvefw-logger [24351]: received terminate request (signal)
pvefw-logger [24351]: stopping pvefw logger

Server not stop/restart   ;-/
Any idea        ??!!

log file included.