[FAILED] Failed unmounting RPC Pipe File System - after dist-upgrade

[yena]

Hello,
after upgrading from 6 to 7, i have noticed some stucks on the Filesyste.. was blocked making snapshot..
Rebooted, now during the reboot is blocked on this error:

[FAILED] Failed unmounting RPC Pipe File System

after two reboot seem start but i see a stange process:
z_upgrade
that use 40% of the CPU..

On the dmesg:

[Thu Jan 12 08:57:38 2023] INFO: task zfs:68486 blocked for more than 362 seconds.
[Thu Jan 12 08:57:38 2023] Tainted: P O 5.15.83-1-pve #1
[Thu Jan 12 08:57:38 2023] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Thu Jan 12 08:57:38 2023] task:zfs state stack: 0 pid:68486 ppid: 68484 flags:0x00004000
[Thu Jan 12 08:57:38 2023] Call Trace:
[Thu Jan 12 08:57:38 2023] <TASK>
[Thu Jan 12 08:57:38 2023] __schedule+0x34e/0x1740
[Thu Jan 12 08:57:38 2023] ? default_wake_function+0x1a/0x40
[Thu Jan 12 08:57:38 2023] ? wait_woken+0x32/0x70
[Thu Jan 12 08:57:38 2023] schedule+0x69/0x110
[Thu Jan 12 08:57:38 2023] io_schedule+0x46/0x80
[Thu Jan 12 08:57:38 2023] cv_wait_common+0xae/0x140 [spl]
[Thu Jan 12 08:57:38 2023] ? wait_woken+0x70/0x70
[Thu Jan 12 08:57:38 2023] __cv_wait_io+0x18/0x20 [spl]
[Thu Jan 12 08:57:38 2023] txg_wait_synced_impl+0xda/0x130 [zfs]
[Thu Jan 12 08:57:38 2023] txg_wait_synced+0x10/0x50 [zfs]
[Thu Jan 12 08:57:38 2023] dsl_sync_task_common+0x1c6/0x2a0 [zfs]
[Thu Jan 12 08:57:38 2023] ? dmu_recv_end_sync+0x580/0x580 [zfs]
[Thu Jan 12 08:57:38 2023] ? dmu_recv_cleanup_ds+0x150/0x150 [zfs]
[Thu Jan 12 08:57:38 2023] ? dmu_recv_end_sync+0x580/0x580 [zfs]
[Thu Jan 12 08:57:38 2023] ? dmu_recv_cleanup_ds+0x150/0x150 [zfs]
[Thu Jan 12 08:57:38 2023] dsl_sync_task+0x1a/0x20 [zfs]
[Thu Jan 12 08:57:38 2023] dmu_recv_existing_end+0x63/0x90 [zfs]
[Thu Jan 12 08:57:38 2023] ? down_write+0x13/0x60
[Thu Jan 12 08:57:38 2023] ? dnode_evict_bonus+0xb2/0xc0 [zfs]
[Thu Jan 12 08:57:38 2023] ? dnode_evict_dbufs+0x19d/0x1b0 [zfs]
[Thu Jan 12 08:57:38 2023] ? __cond_resched+0x1a/0x50
[Thu Jan 12 08:57:38 2023] ? mutex_lock+0x13/0x50
[Thu Jan 12 08:57:38 2023] ? dsl_dir_cancel_waiters+0x8a/0xa0 [zfs]
[Thu Jan 12 08:57:38 2023] dmu_recv_end+0x96/0xc0 [zfs]
[Thu Jan 12 08:57:38 2023] zfs_ioc_recv_impl+0x5fa/0x1290 [zfs]
[Thu Jan 12 08:57:38 2023] zfs_ioc_recv+0x1ac/0x360 [zfs]
[Thu Jan 12 08:57:38 2023] ? __kmalloc_node+0x166/0x3a0
[Thu Jan 12 08:57:38 2023] ? spl_kmem_alloc_impl+0xb9/0x100 [spl]
[Thu Jan 12 08:57:38 2023] zfsdev_ioctl_common+0x767/0x9e0 [zfs]
[Thu Jan 12 08:57:38 2023] ? _copy_from_user+0x2e/0x70
[Thu Jan 12 08:57:38 2023] zfsdev_ioctl+0x57/0xf0 [zfs]
[Thu Jan 12 08:57:38 2023] __x64_sys_ioctl+0x95/0xd0
[Thu Jan 12 08:57:38 2023] do_syscall_64+0x5c/0xc0
[Thu Jan 12 08:57:38 2023] entry_SYSCALL_64_after_hwframe+0x61/0xcb
[Thu Jan 12 08:57:38 2023] RIP: 0033:0x7f7ffc5965f7
[Thu Jan 12 08:57:38 2023] RSP: 002b:00007ffe189df068 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[Thu Jan 12 08:57:38 2023] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7ffc5965f7
[Thu Jan 12 08:57:38 2023] RDX: 00007ffe189df210 RSI: 0000000000005a1b RDI: 0000000000000006
[Thu Jan 12 08:57:38 2023] RBP: 00007ffe189e3800 R08: 0000563a386cf940 R09: 00007f7ffc673be0
[Thu Jan 12 08:57:38 2023] R10: 0000000000100000 R11: 0000000000000246 R12: 00007ffe189df210
[Thu Jan 12 08:57:38 2023] R13: 00007ffe189e27c0 R14: 00007ffe189e9660 R15: 0000563a3868eda0
[Thu Jan 12 08:57:38 2023] </TASK>

Some advice?

Thanks!