@stormi oh I see, I'll check the windows 10 vm's then, thank you

@stormi should I send you the full log?

@stormi The virtualization is done on the machine I sent the log and dmesg output to

@stormi We do not store the vm on the host but on a nas

@stormi this is the content

(XEN) [000006e9c3665212] Xen version 4.13.5-9.44 (mockbuild@[unknown]) (gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-28)) debug=n  Wed Sep 25 12:09:41 CEST 2024
(XEN) [000006e9c36666f6] Latest ChangeSet: 708e83f0e7d1, pq 00d9767f5a3e
(XEN) [000006e9c36680d6] build-id: 36e9b242256dab6caa821db6acc882a4b2ce750c
(XEN) [000006e9c3668b5e] Bootloader: GRUB 2.02
(XEN) [000006e9c366978e] Command line: dom0_mem=1648M,max:1648M watchdog ucode=scan dom0_max_vcpus=1-4 crashkernel=256M,below=4G console=vga vga=mode-0x0311
(XEN) [000006e9c366a892] Xen image load base address: 0x7d400000
(XEN) [000006e9c366b1ca] Video information:
(XEN) [000006e9c366beca]  VGA is graphics mode 640x480, 16 bpp
(XEN) [000006e9c366cb86]  VBE/DDC methods: none; EDID transfer time: 0 seconds
(XEN) [000006e9c366d866]  EDID info not retrieved because no DDC retrieval method detected
(XEN) [000006e9c366e52e] Disc information:
(XEN) [000006e9c366ee1e]  Found 1 MBR signatures
(XEN) [000006e9c366f79e]  Found 1 EDD information structures
(XEN) [000006e9c368619a] Xen-e820 RAM map:
(XEN) [000006e9c3686f12]  0000000000000000 - 000000000009ac00 (usable)
(XEN) [000006e9c3687da6]  000000000009ac00 - 00000000000a0000 (reserved)
(XEN) [000006e9c3688b4a]  00000000000e0000 - 0000000000100000 (reserved)
(XEN) [000006e9c368998e]  0000000000100000 - 000000007da71000 (usable)
(XEN) [000006e9c368a7ca]  000000007da71000 - 000000007dabf000 (reserved)
(XEN) [000006e9c368b506]  000000007dabf000 - 000000007db5a000 (ACPI data)
(XEN) [000006e9c368c29a]  000000007db5a000 - 000000007dd59000 (ACPI NVS)
(XEN) [000006e9c368d182]  000000007dd59000 - 000000007f364000 (reserved)
(XEN) [000006e9c368de6a]  000000007f364000 - 000000007f365000 (usable)
(XEN) [000006e9c368eb92]  000000007f365000 - 000000007f3eb000 (ACPI NVS)
(XEN) [000006e9c368f8d6]  000000007f3eb000 - 000000007f800000 (usable)
(XEN) [000006e9c36905d2]  0000000080000000 - 0000000090000000 (reserved)
(XEN) [000006e9c36912da]  00000000fed1c000 - 00000000fed20000 (reserved)
(XEN) [000006e9c3692096]  00000000ff000000 - 0000000100000000 (reserved)
(XEN) [000006e9c3692f5a]  0000000100000000 - 0000002080000000 (usable)
(XEN) [000006e9c58ee402] Kdump: 256MB (262144kB) at 0x6d600000
(XEN) [000006e9c634823a] ACPI: RSDP 000F0490, 0024 (r2 FTS   )
(XEN) [000006e9c634a78e] ACPI: XSDT 7DADD090, 009C (r1 FTS    D3032-A1  1072009 AMI     10013)
(XEN) [000006e9c634ccee] ACPI: FACP 7DAE8330, 00F4 (r4 FTS    D3032-A1  1072009 AMI     10013)
(XEN) [000006e9c634f50a] ACPI: DSDT 7DADD1B8, B176 (r2 FTS    D3032-A1       17 INTL 20091112)
(XEN) [000006e9c6350fe6] ACPI: FACS 7DD56F80, 0040
(XEN) [000006e9c63521a2] ACPI: APIC 7DAE8428, 00D4 (r3 FTS    D3032-A1  1072009 AMI     10013)
(XEN) [000006e9c63538f2] ACPI: FPDT 7DAE8500, 0044 (r1 FTS    D3032-A1  1072009 AMI     10013)
(XEN) [000006e9c6354f56] ACPI: MCFG 7DAE8548, 003C (r1 FTS    OEMMCFG.  1072009 MSFT       97)
(XEN) [000006e9c63565a6] ACPI: SRAT 7DAE8588, 0330 (r1 A M I  AMI SRAT        1 AMI.        0)
(XEN) [000006e9c6357db6] ACPI: SLIT 7DAE88B8, 0030 (r1 A M I  AMI SLIT        0 AMI.        0)
(XEN) [000006e9c6359286] ACPI: HPET 7DAE88E8, 0038 (r1 FTS    D3032-A1  1072009 AMI.        5)
(XEN) [000006e9c635a86e] ACPI: SPMI 7DAE8920, 0040 (r5 A M I   OEMSPMI        0 AMI.        0)
(XEN) [000006e9c635be22] ACPI: SSDT 7DAE8960, 70104 (r2  INTEL    CpuPm     4000 INTL 20051117)
(XEN) [000006e9c635d7da] ACPI: SPCR 7DB58A68, 0050 (r1  A M I   APTIO4  1072009 AMI.        5)
(XEN) [000006e9c635ee92] ACPI: EINJ 7DB58AB8, 0130 (r1    AMI AMI EINJ        0             0)
(XEN) [000006e9c63605d2] ACPI: ERST 7DB58BE8, 0230 (r1  AMIER AMI ERST        0             0)
(XEN) [000006e9c6361b5a] ACPI: HEST 7DB58E18, 00A8 (r1    AMI AMI HEST        0             0)
(XEN) [000006e9c6363046] ACPI: BERT 7DB58EC0, 0030 (r1    AMI AMI BERT        0             0)
(XEN) [000006e9c63644ca] ACPI: DMAR 7DB58EF0, 00F8 (r1 A M I   OEMDMAR        1 INTL        1)
(XEN) [000006e9c63cf5a6] System RAM: 131038MB (134183044kB)
(XEN) [000006e9de01dee2] SRAT: PXM 0 -> APIC 00 -> Node 0
(XEN) [000006e9de01ed26] SRAT: PXM 0 -> APIC 02 -> Node 0
(XEN) [000006e9de01f79a] SRAT: PXM 0 -> APIC 04 -> Node 0
(XEN) [000006e9de02025e] SRAT: PXM 0 -> APIC 06 -> Node 0
(XEN) [000006e9de020fb6] SRAT: PXM 1 -> APIC 20 -> Node 1
(XEN) [000006e9de021b1e] SRAT: PXM 1 -> APIC 22 -> Node 1
(XEN) [000006e9de022622] SRAT: PXM 1 -> APIC 24 -> Node 1
(XEN) [000006e9de0230e6] SRAT: PXM 1 -> APIC 26 -> Node 1
(XEN) [000006e9de024d3e] SRAT: Node 0 PXM 0 0-80000000
(XEN) [000006e9de025dee] SRAT: Node 0 PXM 0 100000000-1080000000
(XEN) [000006e9de026e62] SRAT: Node 1 PXM 1 1080000000-2080000000
(XEN) [000006ebea27b3fe] Domain heap initialised DMA width 32 bits
(XEN) [000006ec283a27fa] vesafb: framebuffer at 0x00000000de000000, mapped to 0xffff82c000201000, using 2048k, total 8128k
(XEN) [000006ec283a394e] vesafb: mode is 640x480x16, linelength=1280, font 8x8
(XEN) [000006ec283a4aaa] vesafb: Truecolor: size=0:5:6:5, shift=0:11:5:0
(XEN) [000006ec283b53a2] CPU Vendor: Intel, Family 6 (0x6), Model 45 (0x2d), Stepping 7 (raw 000206d7)
(XEN) [000006ec4147336e] found SMP MP-table at 000fded0
(XEN) [000006ec415ae4de] DMI 2.7 present.
(XEN) [000006ec4169c57a] Using APIC driver default
(XEN) [000006ec417b0a12] XSM Framework v1.0.1 initialized
(XEN) [000006ec418ec5be] Initialising XSM SILO mode
(XEN) [000006ec41a18a16] ACPI: PM-Timer IO Port: 0x408 (24 bits)
(XEN) [000006ec41b71c06] ACPI: SLEEP INFO: pm1x_cnt[1:404,1:0], pm1x_evt[1:400,1:0]
(XEN) [000006ec41c724d2] ACPI: 32/64X FACS address mismatch in FADT - 7dd56f80/0000000000000000, using 32
(XEN) [000006ec41dc8476] ACPI:             wakeup_vec[7dd56f8c], vec_size[20]
(XEN) [000006ec41f966fa] ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
(XEN) [000006ec4212bc7a] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x02] enabled)
(XEN) [000006ec422c12f2] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x04] enabled)
(XEN) [000006ec42456a0e] ACPI: LAPIC (acpi_id[0x03] lapic_id[0x06] enabled)
(XEN) [000006ec425ec23e] ACPI: LAPIC (acpi_id[0x04] lapic_id[0x20] enabled)
(XEN) [000006ec42781f1e] ACPI: LAPIC (acpi_id[0x05] lapic_id[0x22] enabled)
(XEN) [000006ec429179a2] ACPI: LAPIC (acpi_id[0x06] lapic_id[0x24] enabled)
(XEN) [000006ec42aacf62] ACPI: LAPIC (acpi_id[0x07] lapic_id[0x26] enabled)
(XEN) [000006ec42c617ba] ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
(XEN) [000006ec42df983e] ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
(XEN) [000006ec42f9185a] ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1])
(XEN) [000006ec4312990a] ACPI: LAPIC_NMI (acpi_id[0x03] high edge lint[0x1])
(XEN) [000006ec432c1b16] ACPI: LAPIC_NMI (acpi_id[0x04] high edge lint[0x1])
(XEN) [000006ec43459b4e] ACPI: LAPIC_NMI (acpi_id[0x05] high edge lint[0x1])
(XEN) [000006ec435f1c9a] ACPI: LAPIC_NMI (acpi_id[0x06] high edge lint[0x1])
(XEN) [000006ec43789b2e] ACPI: LAPIC_NMI (acpi_id[0x07] high edge lint[0x1])
(XEN) [000006ec4393f1c6] ACPI: IOAPIC (id[0x00] address[0xfec00000] gsi_base[0])
(XEN) [000006ec43aed4ea] IOAPIC[0]: apic_id 0, version 32, address 0xfec00000, GSI 0-23
(XEN) [000006ec43bfcefa] ACPI: IOAPIC (id[0x02] address[0xfec01000] gsi_base[24])
(XEN) [000006ec43cf55b6] IOAPIC[1]: apic_id 2, version 32, address 0xfec01000, GSI 24-47
(XEN) [000006ec43e08ef6] ACPI: IOAPIC (id[0x03] address[0xfec40000] gsi_base[48])
(XEN) [000006ec43f0144a] IOAPIC[2]: apic_id 3, version 32, address 0xfec40000, GSI 48-71
(XEN) [000006ec44024032] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
(XEN) [000006ec4411d0b6] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
(XEN) [000006ec44233e42] Enabling APIC mode:  Flat.  Using 3 I/O APICs
(XEN) [000006ec443b5ca6] ACPI: HPET id: 0x8086a701 base: 0xfed00000
(XEN) [000006ec4452ad2a] PCI: MCFG configuration 0: base 80000000 segment 0000 buses 00 - ff
(XEN) [000006ec4464d3d2] PCI: MCFG area at 80000000 reserved in E820
(XEN) [000006ec447bd1ea] PCI: Using MCFG for segment 0000 bus 00-ff
(XEN) [000006ec449a496e] Xen ERST support is initialized.
(XEN) [000006ec44ae9e26] HEST: Table parsing has been initialized
(XEN) [000006ec44c4fb5a] Using ACPI (MADT) for SMP configuration information
(XEN) [000006ec44de6a56] SMP: Allowing 8 CPUs (0 hotplug CPUs)
(XEN) [000006ec44f467de] IRQ limits: 72 GSI, 1480 MSI/MSI-X
(XEN) [000006ec46e879c6] Switched to APIC driver x2apic_phys
(XEN) [000006ec4775c566] microcode: CPU0 updated from revision 0x710 to 0x71a, date = 2020-03-24
(XEN) [000006ec47898fca] xstate: size: 0x340 and states: 0x7
(XEN) [000006ec479f01d2] CPU0: Intel machine check reporting enabled
(XEN) [000006ec4a0b34d6] Speculative mitigation facilities:
(XEN) [000006ec4c73c43a]   Hardware hints:
(XEN) [000006ec4ed7726e]   Hardware features: IBPB IBRS STIBP SSBD L1D_FLUSH MD_CLEAR
(XEN) [000006ec5395be3e]   Compiled-in support: INDIRECT_THUNK SHADOW_PAGING HARDEN_LOCK
(XEN) [000006ec58607fa2]   Xen settings: BTI-Thunk RETPOLINE, SPEC_CTRL: IBRS- STIBP- SSBD- PSFD-, Other: IBPB-ctxt L1D_FLUSH VERW BRANCH_HARDEN
(XEN) [000006ec5d3e765a]   L1TF: believed vulnerable, maxphysaddr L1D 46, CPUID 46, Safe address 300000000000
(XEN) [000006ec6213eede]   Support for HVM VMs: MSR_SPEC_CTRL RSB EAGER_FPU
(XEN) [000006ec649116ba]   Support for PV VMs: MSR_SPEC_CTRL RSB EAGER_FPU VERW
(XEN) [000006ec670f8862]   XPTI (64-bit PV only): Dom0 enabled, DomU enabled (without PCID)
(XEN) [000006ec6be28b0e]   PV L1TF shadowing: Dom0 disabled, DomU enabled
(XEN) [000006ec6e5ecf52] Using scheduler: SMP Credit Scheduler (credit)
(XEN) [000006ec763880da] Platform timer is 14.318MHz HPET
(XEN) [    7.126199] Detected 1800.007 MHz processor.
(XEN) [    7.151548] alt table ffff82d080459fd8 -> ffff82d08046ce7c
(XEN) [    7.167580] Intel VT-d iommu 0 supported page sizes: 4kB
(XEN) [    7.174121] Intel VT-d iommu 1 supported page sizes: 4kB
(XEN) [    7.180648] Intel VT-d Snoop Control enabled.
(XEN) [    7.187087] Intel VT-d Dom0 DMA Passthrough not enabled.
(XEN) [    7.193554] Intel VT-d Queued Invalidation enabled.
(XEN) [    7.199982] Intel VT-d Interrupt Remapping enabled.
(XEN) [    7.206369] Intel VT-d Posted Interrupt not enabled.
(XEN) [    7.212749] Intel VT-d Shared EPT tables not enabled.
(XEN) [    7.220568] I/O virtualisation enabled
(XEN) [    7.226900]  - Dom0 mode: Relaxed
(XEN) [    7.233151] Interrupt remapping enabled
(XEN) [    7.239384] Enabled directed EOI with ioapic_ack_old on!
(XEN) [    7.246738] ENABLING IO-APIC IRQs
(XEN) [    7.252916]  -> Using old ACK method
(XEN) [    7.259317] ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=-1 pin2=-1
(XEN) [    8.301418] Allocated console ring of 64 KiB.
(XEN) [    8.307664] VMX: Supported advanced features:
(XEN) [    8.313836]  - APIC MMIO access virtualisation
(XEN) [    8.320040]  - APIC TPR shadow
(XEN) [    8.326131]  - Extended Page Tables (EPT)
(XEN) [    8.332268]  - Virtual-Processor Identifiers (VPID)
(XEN) [    8.338398]  - Virtual NMI
(XEN) [    8.344457]  - MSR direct-access bitmap
(XEN) [    8.350495]  - Unrestricted Guest
(XEN) [    8.356528] HVM: ASIDs enabled.
(XEN) [    8.362466] HVM: VMX enabled
(XEN) [    8.368337] HVM: Hardware Assisted Paging (HAP) detected
(XEN) [    8.374258] HVM: HAP page sizes: 4kB, 2MB, 1GB
(XEN) [    8.380435] alt table ffff82d080459fd8 -> ffff82d08046ce7c
(XEN) [000006ecfe4c3f5c] microcode: CPU1 updated from revision 0x710 to 0x71a, date = 2020-03-24
(XEN) [000006ecffb9db7a] microcode: CPU2 updated from revision 0x710 to 0x71a, date = 2020-03-24
(XEN) [000006ed0124c632] microcode: CPU3 updated from revision 0x710 to 0x71a, date = 2020-03-24
(XEN) [000006ed029e3d68] microcode: CPU4 updated from revision 0x710 to 0x71a, date = 2020-03-24
(XEN) [000006ed040d575a] microcode: CPU5 updated from revision 0x710 to 0x71a, date = 2020-03-24
(XEN) [000006ed057dc280] microcode: CPU6 updated from revision 0x710 to 0x71a, date = 2020-03-24
(XEN) [000006ed06ece4b4] microcode: CPU7 updated from revision 0x710 to 0x71a, date = 2020-03-24
(XEN) [    8.480221] Brought up 8 CPUs
(XEN) [    8.486073] Testing NMI watchdog on all CPUs: ok
(XEN) [    8.523748] Scheduling granularity: cpu, 1 CPU per sched-resource
(XEN) [    8.549842] mcheck_poll: Machine check polling timer started.
(XEN) [    8.555766] Dom0 has maximum 840 PIRQs
(XEN) [    8.561687] csched_alloc_domdata: setting dom 0 as the privileged domain
(XEN) [    8.573043] NX (Execute Disable) protection active
(XEN) [    8.578901] *** Building a PV Dom0 ***
(XEN) [    8.984955]  Xen  kernel: 64-bit, lsb, compat32
(XEN) [    8.990711]  Dom0 kernel: 64-bit, PAE, lsb, paddr 0x1000000 -> 0x302c000
(XEN) [    9.003000] PHYSICAL MEMORY ARRANGEMENT:
(XEN) [    9.008713]  Dom0 alloc.:   000000202c000000->0000002030000000 (400385 pages to be allocated)
(XEN) [    9.020137]  Init. ramdisk: 000000207ec01000->000000207ffff460
(XEN) [    9.026051] VIRTUAL MEMORY ARRANGEMENT:
(XEN) [    9.031758]  Loaded kernel: ffffffff81000000->ffffffff8302c000
(XEN) [    9.037532]  Init. ramdisk: 0000000000000000->0000000000000000
(XEN) [    9.043334]  Phys-Mach map: 0000008000000000->0000008000338000
(XEN) [    9.049146]  Start info:    ffffffff8302c000->ffffffff8302c4b8
(XEN) [    9.054975]  Xenstore ring: 0000000000000000->0000000000000000
(XEN) [    9.060822]  Console ring:  0000000000000000->0000000000000000
(XEN) [    9.066686]  Page tables:   ffffffff8302d000->ffffffff8304a000
(XEN) [    9.072566]  Boot stack:    ffffffff8304a000->ffffffff8304b000
(XEN) [    9.078485]  TOTAL:         ffffffff80000000->ffffffff83400000
(XEN) [    9.084450]  ENTRY ADDRESS: ffffffff8242b180
(XEN) [    9.092453] Dom0 has maximum 4 VCPUs
(XEN) [    9.138264] Found masked UR signaling on 0000:00:00.0
(XEN) [    9.144233] Found masked UR signaling on 0000:00:01.0
(XEN) [    9.150226] Found masked UR signaling on 0000:00:02.0
(XEN) [    9.156198] Found masked UR signaling on 0000:00:02.2
(XEN) [    9.162181] Found masked UR signaling on 0000:00:03.0
(XEN) [    9.168220] Masked VT-d error signaling on 0000:00:05.0
(XEN) [    9.188107] Found masked UR signaling on 0000:80:00.0
(XEN) [    9.194173] Masked VT-d error signaling on 0000:80:05.0
(XEN) [   21.603659] Initial low memory virq threshold set at 0x4000 pages.
(XEN) [   21.609780] Scrubbing Free RAM in background
(XEN) [   21.615876] Std. Loglevel: Errors, warnings and info
(XEN) [   21.622112] Guest Loglevel: Nothing (Rate-limited: Errors and warnings)
(XEN) [   21.628563] Xen is relinquishing VGA console.
(XEN) [   21.641216] *** Serial input to DOM0 (type 'CTRL-a' three times to switch input)
(XEN) [   21.641466] Freed 628kB init memory
(XEN) [   27.908847] Found masked UR signaling on 0000:00:00.0
(XEN) [   27.909744] Found masked UR signaling on 0000:00:01.0
(XEN) [   27.910672] Found masked UR signaling on 0000:00:02.0
(XEN) [   27.911581] Found masked UR signaling on 0000:00:02.2
(XEN) [   27.912512] Found masked UR signaling on 0000:00:03.0
(XEN) [   27.913203] Masked VT-d error signaling on 0000:00:05.0
(XEN) [   27.984018] Found masked UR signaling on 0000:80:00.0
(XEN) [   27.984671] Masked VT-d error signaling on 0000:80:05.0

Hello, some VMs occasionally reboot with the log saying that the vm is deactivated, but I don't understand why the few vms do this or what should be changed?
I have attached the content of the SMlog at the time of the event.

xcp-companyname ~]# xl info
host                   : xcp-companyname
release                : 4.19.0+1
version                : #1 SMP Tue Jan 23 14:12:55 CET 2024
machine                : x86_64
nr_cpus                : 8
max_cpu_id             : 7
nr_nodes               : 2
cores_per_socket       : 4
threads_per_core       : 1
cpu_mhz                : 1800.007
hw_caps                : bfebfbff:1fbee3ff:2c100800:00000001:00000001:00000000:00000000:00000100
virt_caps              : pv hvm hvm_directio pv_directio hap shadow
total_memory           : 131038
free_memory            : 71696
sharing_freed_memory   : 0
sharing_used_memory    : 0
outstanding_claims     : 0
free_cpus              : 
xen_major              : 4
xen_minor              : 13
xen_extra              : .5-9.44
xen_version            : 4.13.5-9.44
xen_caps               : xen-3.0-x86_64 hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : 708e83f0e7d1, pq 00d9767f5a3e
xen_commandline        : dom0_mem=1648M,max:1648M watchdog ucode=scan dom0_max_vcpus=1-4 crashkernel=256M,below=4G console=vga vga=mode-0x0311
cc_compiler            : gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-28)
cc_compile_by          : mockbuild
cc_compile_domain      : [unknown]
cc_compile_date        : Wed Sep 25 12:09:41 CEST 2024
build_id               : 36e9b242256dab6caa821db6acc882a4b2ce750c
xend_config_format     : 4

['/usr/sbin/td-util', 'query', 'vhd', '-vpfb', '/var/run/sr-mount/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/554525a9-b40d-4f44-abb0-057a59af00c4.vhd']
Oct  9 01:08:53 xcp-companyname SM: [23137]   pread SUCCESS
Oct  9 01:08:53 xcp-companyname SM: [23137] lock: released /var/lock/sm/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/sr
Oct  9 01:08:53 xcp-companyname SM: [23137] vdi_deactivate {'sr_uuid': 'e6e79fdc-8ca9-e89f-b3a5-68d79810cda1', 'subtask_of': 'DummyRef:|4214a67c-1800-440e-8e63-8007ed005d00|VDI.deactivate', 'vdi_ref': 'OpaqueRef:72039b18-8df3-4231-ae2b-e2fa4c045e72', 'vdi_on_boot': 'persist', 'args': [], 'o_direct': False, 'vdi_location': '554525a9-b40d-4f44-abb0-057a59af00c4', 'host_ref': 'OpaqueRef:e94dd9a5-d723-44b9-860d-ce60d886af67', 'session_ref': 'OpaqueRef:e08cb7d8-9fd5-42f0-a70a-413b07773912', 'device_config': {'nfsversion': '4.1', 'server': '10.0.1.7', 'SRmaster': 'false', 'serverpath': '/volume1/XCP_SSD_V2', 'options': ''}, 'command': 'vdi_deactivate', 'vdi_allow_caching': 'false', 'sr_ref': 'OpaqueRef:b5500def-7982-4c5d-9c48-fe744cf61313', 'vdi_uuid': '554525a9-b40d-4f44-abb0-057a59af00c4'}
Oct  9 01:08:53 xcp-companyname SM: [23137] lock: opening lock file /var/lock/sm/554525a9-b40d-4f44-abb0-057a59af00c4/vdi
Oct  9 01:08:53 xcp-companyname SM: [23137] blktap2.deactivate
Oct  9 01:08:53 xcp-companyname SM: [23137] lock: acquired /var/lock/sm/554525a9-b40d-4f44-abb0-057a59af00c4/vdi
Oct  9 01:08:53 xcp-companyname SM: [23137] ['/usr/sbin/tap-ctl', 'close', '-p', '21225', '-m', '6', '-t', '30']
Oct  9 01:08:53 xcp-companyname SM: [23137]  = 0
Oct  9 01:08:53 xcp-companyname SM: [23137] ['/usr/sbin/tap-ctl', 'detach', '-p', '21225', '-m', '6']
Oct  9 01:08:54 xcp-companyname SM: [23137]  = 0
Oct  9 01:08:54 xcp-companyname SM: [23137] ['/usr/sbin/tap-ctl', 'free', '-m', '6']
Oct  9 01:08:54 xcp-companyname SM: [23137]  = 0
Oct  9 01:08:54 xcp-companyname SM: [23137] tap.deactivate: Shut down Tapdisk(vhd:/var/run/sr-mount/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/554525a9-b40d-4f44-abb0-057a59af00c4.vhd, pid=21225, minor=6, state=R)
Oct  9 01:08:54 xcp-companyname SM: [23137] ['/usr/sbin/td-util', 'query', 'vhd', '-vpfb', '/var/run/sr-mount/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/554525a9-b40d-4f44-abb0-057a59af00c4.vhd']
Oct  9 01:08:54 xcp-companyname SM: [23137]   pread SUCCESS
Oct  9 01:08:54 xcp-companyname SM: [23137] Removed host key host_OpaqueRef:e94dd9a5-d723-44b9-860d-ce60d886af67 for 554525a9-b40d-4f44-abb0-057a59af00c4
Oct  9 01:08:54 xcp-companyname SM: [23137] lock: released /var/lock/sm/554525a9-b40d-4f44-abb0-057a59af00c4/vdi
Oct  9 01:08:54 xcp-companyname SM: [23203] lock: opening lock file /var/lock/sm/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/sr
Oct  9 01:08:54 xcp-companyname SM: [23203] lock: acquired /var/lock/sm/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/sr
Oct  9 01:08:54 xcp-companyname SM: [23203] ['/usr/sbin/td-util', 'query', 'vhd', '-vpfb', '/var/run/sr-mount/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/554525a9-b40d-4f44-abb0-057a59af00c4.vhd']
Oct  9 01:08:54 xcp-companyname SM: [23203]   pread SUCCESS
Oct  9 01:08:54 xcp-companyname SM: [23203] vdi_detach {'sr_uuid': 'e6e79fdc-8ca9-e89f-b3a5-68d79810cda1', 'subtask_of': 'DummyRef:|92293dc9-7b8f-4ee1-94fd-07af7ae0334e|VDI.detach', 'vdi_ref': 'OpaqueRef:72039b18-8df3-4231-ae2b-e2fa4c045e72', 'vdi_on_boot': 'persist', 'args': [], 'o_direct': False, 'vdi_location': '554525a9-b40d-4f44-abb0-057a59af00c4', 'host_ref': 'OpaqueRef:e94dd9a5-d723-44b9-860d-ce60d886af67', 'session_ref': 'OpaqueRef:183ccc76-b6d1-44af-9154-a89d65e7bb25', 'device_config': {'nfsversion': '4.1', 'server': '10.0.1.7', 'SRmaster': 'false', 'serverpath': '/volume1/XCP_SSD_V2', 'options': ''}, 'command': 'vdi_detach', 'vdi_allow_caching': 'false', 'sr_ref': 'OpaqueRef:b5500def-7982-4c5d-9c48-fe744cf61313', 'vdi_uuid': '554525a9-b40d-4f44-abb0-057a59af00c4'}
Oct  9 01:08:54 xcp-companyname SM: [23203] lock: opening lock file /var/lock/sm/554525a9-b40d-4f44-abb0-057a59af00c4/vdi
Oct  9 01:08:54 xcp-companyname SM: [23203] lock: released /var/lock/sm/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/sr
Oct  9 01:08:57 xcp-companyname SM: [23368] lock: opening lock file /var/lock/sm/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/sr
Oct  9 01:08:57 xcp-companyname SM: [23368] lock: acquired /var/lock/sm/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/sr
Oct  9 01:08:57 xcp-companyname SM: [23368] ['/usr/sbin/td-util', 'query', 'vhd', '-vpfb', '/var/run/sr-mount/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/554525a9-b40d-4f44-abb0-057a59af00c4.vhd']
Oct  9 01:08:57 xcp-companyname SM: [23368]   pread SUCCESS
Oct  9 01:08:57 xcp-companyname SM: [23368] lock: released /var/lock/sm/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/sr
Oct  9 01:08:57 xcp-companyname SM: [23368] vdi_epoch_end {'sr_uuid': 'e6e79fdc-8ca9-e89f-b3a5-68d79810cda1', 'subtask_of': 'DummyRef:|56484b88-c543-490f-9190-0effe9a0e9fb|VDI.epoch_end', 'vdi_ref': 'OpaqueRef:72039b18-8df3-4231-ae2b-e2fa4c045e72', 'vdi_on_boot': 'persist', 'args': [], 'o_direct': False, 'vdi_location': '554525a9-b40d-4f44-abb0-057a59af00c4', 'host_ref': 'OpaqueRef:e94dd9a5-d723-44b9-860d-ce60d886af67', 'session_ref': 'OpaqueRef:487c5469-ac45-4ad3-a903-b7f6b19e9477', 'device_config': {'nfsversion': '4.1', 'server': '10.0.1.7', 'SRmaster': 'false', 'serverpath': '/volume1/XCP_SSD_V2', 'options': ''}, 'command': 'vdi_epoch_end', 'vdi_allow_caching': 'false', 'sr_ref': 'OpaqueRef:b5500def-7982-4c5d-9c48-fe744cf61313', 'vdi_uuid': '554525a9-b40d-4f44-abb0-057a59af00c4'}
Oct  9 01:08:59 xcp-companyname SM: [23399] lock: opening lock file /var/lock/sm/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/sr
Oct  9 01:08:59 xcp-companyname SM: [23399] lock: acquired /var/lock/sm/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/sr
Oct  9 01:08:59 xcp-companyname SM: [23399] ['/usr/sbin/td-util', 'query', 'vhd', '-vpfb', '/var/run/sr-mount/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/554525a9-b40d-4f44-abb0-057a59af00c4.vhd']
Oct  9 01:08:59 xcp-companyname SM: [23399]   pread SUCCESS
Oct  9 01:08:59 xcp-companyname SM: [23399] lock: released /var/lock/sm/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/sr
Oct  9 01:08:59 xcp-companyname SM: [23399] vdi_epoch_begin {'sr_uuid': 'e6e79fdc-8ca9-e89f-b3a5-68d79810cda1', 'subtask_of': 'DummyRef:|ceb6e2be-9968-49b0-8e6b-64c54563e6c0|VDI.epoch_begin', 'vdi_ref': 'OpaqueRef:72039b18-8df3-4231-ae2b-e2fa4c045e72', 'vdi_on_boot': 'persist', 'args': [], 'o_direct': False, 'vdi_location': '554525a9-b40d-4f44-abb0-057a59af00c4', 'host_ref': 'OpaqueRef:e94dd9a5-d723-44b9-860d-ce60d886af67', 'session_ref': 'OpaqueRef:17a62452-4515-4218-b6ec-e14e29e4ccc8', 'device_config': {'nfsversion': '4.1', 'server': '10.0.1.7', 'SRmaster': 'false', 'serverpath': '/volume1/XCP_SSD_V2', 'options': ''}, 'command': 'vdi_epoch_begin', 'vdi_allow_caching': 'false', 'sr_ref': 'OpaqueRef:b5500def-7982-4c5d-9c48-fe744cf61313', 'vdi_uuid': '554525a9-b40d-4f44-abb0-057a59af00c4'}
Oct  9 01:08:59 xcp-companyname SM: [23414] lock: opening lock file /var/lock/sm/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/sr
Oct  9 01:08:59 xcp-companyname SM: [23414] lock: acquired /var/lock/sm/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/sr
Oct  9 01:08:59 xcp-companyname SM: [23414] ['/usr/sbin/td-util', 'query', 'vhd', '-vpfb', '/var/run/sr-mount/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/554525a9-b40d-4f44-abb0-057a59af00c4.vhd']
Oct  9 01:08:59 xcp-companyname SM: [23414]   pread SUCCESS
Oct  9 01:08:59 xcp-companyname SM: [23414] vdi_attach {'sr_uuid': 'e6e79fdc-8ca9-e89f-b3a5-68d79810cda1', 'subtask_of': 'DummyRef:|e10c1fa5-0179-468f-b930-e170b982f5eb|VDI.attach2', 'vdi_ref': 'OpaqueRef:72039b18-8df3-4231-ae2b-e2fa4c045e72', 'vdi_on_boot': 'persist', 'args': ['true'], 'o_direct': False, 'vdi_location': '554525a9-b40d-4f44-abb0-057a59af00c4', 'host_ref': 'OpaqueRef:e94dd9a5-d723-44b9-860d-ce60d886af67', 'session_ref': 'OpaqueRef:80bb0eda-8a55-4f05-b044-f7b7d487428e', 'device_config': {'nfsversion': '4.1', 'server': '10.0.1.7', 'SRmaster': 'false', 'serverpath': '/volume1/XCP_SSD_V2', 'options': ''}, 'command': 'vdi_attach', 'vdi_allow_caching': 'false', 'sr_ref': 'OpaqueRef:b5500def-7982-4c5d-9c48-fe744cf61313', 'vdi_uuid': '554525a9-b40d-4f44-abb0-057a59af00c4'}
Oct  9 01:08:59 xcp-companyname SM: [23414] lock: opening lock file /var/lock/sm/554525a9-b40d-4f44-abb0-057a59af00c4/vdi
Oct  9 01:08:59 xcp-companyname SM: [23414] <__main__.NFSFileVDI object at 0x7f994301db90>
Oct  9 01:08:59 xcp-companyname SM: [23414] result: {'params_nbd': 'nbd:unix:/run/blktap-control/nbd/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/554525a9-b40d-4f44-abb0-057a59af00c4', 'o_direct_reason': 'NO_RO_IMAGE', 'params': '/dev/sm/backend/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/554525a9-b40d-4f44-abb0-057a59af00c4', 'o_direct': True, 'xenstore_data': {'scsi/0x12/0x80': 'AIAAEjU1NDUyNWE5LWI0MGQtNGYgIA==', 'scsi/0x12/0x83': 'AIMAMQIBAC1YRU5TUkMgIDU1NDUyNWE5LWI0MGQtNGY0NC1hYmIwLTA1N2E1OWFmMDBjNCA=', 'vdi-uuid': '554525a9-b40d-4f44-abb0-057a59af00c4', 'mem-pool': 'e6e79fdc-8ca9-e89f-b3a5-68d79810cda1'}}
Oct  9 01:08:59 xcp-companyname SM: [23414] lock: released /var/lock/sm/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/sr
Oct  9 01:08:59 xcp-companyname SM: [23443] lock: opening lock file /var/lock/sm/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/sr
Oct  9 01:08:59 xcp-companyname SM: [23443] lock: acquired /var/lock/sm/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/sr
Oct  9 01:09:00 xcp-companyname SM: [23443] ['/usr/sbin/td-util', 'query', 'vhd', '-vpfb', '/var/run/sr-mount/e6e79fdc-8ca9-e89f-b3a5-68d79810cda1/554525a9-b40d-4f44-abb0-057a59af00c4.vhd']
Oct  9 01:09:00 xcp-companyname SM: [23443]   pread SUCCESS

These are repeated in yesterday's log when it fixed itself, but I'd like to know what happened.

Sep 30 19:15:17 xcpng-Companyxyz SM: [4116] lock: released /var/lock/sm/xyID1/vdi
Sep 30 19:15:18 xcpng-Companyxyz SM: [4160] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID3.vhd)
Sep 30 19:15:20 xcpng-Companyxyz SM: [4184] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID4.vhd)
Sep 30 19:15:21 xcpng-Companyxyz SM: [4191] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID5.vhd)
Sep 30 19:15:21 xcpng-Companyxyz SM: [4200] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID6.vhd)
Sep 30 19:15:22 xcpng-Companyxyz SM: [4207] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID7.vhd)
Sep 30 19:15:23 xcpng-Companyxyz SM: [4220] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID8.vhd)
Sep 30 19:15:24 xcpng-Companyxyz SM: [4243] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID9.vhd)
Sep 30 19:15:25 xcpng-Companyxyz SM: [4250] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID10.vhd)
Sep 30 19:15:25 xcpng-Companyxyz SM: [4257] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID11.vhd)
Sep 30 19:15:26 xcpng-Companyxyz SM: [4264] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID12.vhd)
Sep 30 19:15:27 xcpng-Companyxyz SM: [4271] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID13.vhd)
Sep 30 19:15:27 xcpng-Companyxyz SM: [4287] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID14.vhd)
Sep 30 19:15:28 xcpng-Companyxyz SM: [4309] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID15.vhd)
Sep 30 19:15:29 xcpng-Companyxyz SM: [4323] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID16.vhd)
Sep 30 19:15:30 xcpng-Companyxyz SM: [4330] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID17.vhd)
Sep 30 19:15:30 xcpng-Companyxyz SM: [4339] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID18.vhd)
Sep 30 19:15:31 xcpng-Companyxyz SM: [4346] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID19.vhd)
Sep 30 19:15:32 xcpng-Companyxyz SM: [4353] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID20.vhd)
Sep 30 19:15:32 xcpng-Companyxyz SM: [4360] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID21.vhd)
Sep 30 19:15:33 xcpng-Companyxyz SM: [4373] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID22.vhd)
Sep 30 19:15:33 xcpng-Companyxyz SM: [4396] nfs-on-slave.check(/var/run/sr-mount/xyID2/xyID23.vhd)
Sep 30 19:19:56 xcpng-Companyxyz SM: [5749] lock: opening lock file /var/lock/sm/xyID24/vdi
Sep 30 19:19:56 xcpng-Companyxyz SM: [5749] lock: acquired /var/lock/sm/xyID25/vdi
Sep 30 19:19:56 xcpng-Companyxyz SM: [5749] Pause for xyID26
Sep 30 19:19:56 xcpng-Companyxyz SM: [5749] Calling tap pause with minor 8
Sep 30 19:19:56 xcpng-Companyxyz SM: [5749] ['/usr/sbin/tap-ctl', 'pause', '-p', '26306', '-m', '8']
Sep 30 19:19:56 xcpng-Companyxyz SM: [5749]  = 0
Sep 30 19:19:56 xcpng-Companyxyz SM: [5749] lock: released /var/lock/sm/xyID27/vdi
Sep 30 19:19:56 xcpng-Companyxyz SM: [5749] lock: acquired /var/lock/sm/xyID27/vdi
Sep 30 19:19:56 xcpng-Companyxyz SM: [5749] Unpause for xyID27
Sep 30 19:19:56 xcpng-Companyxyz SM: [5749] Realpath: /var/run/sr-mount/xyID2/xyID27.vhd
Sep 30 19:19:57 xcpng-Companyxyz SM: [5749] lock: opening lock file /var/lock/sm/xyID2/sr
Sep 30 19:19:57 xcpng-Companyxyz SM: [5749] ['/usr/sbin/td-util', 'query', 'vhd', '-vpfb', '/var/run/sr-mount/xyID2/xyID27.vhd']
Sep 30 19:19:57 xcpng-Companyxyz SM: [5749]   pread SUCCESS
Sep 30 19:19:57 xcpng-Companyxyz SM: [5749] Calling tap unpause with minor 8
Sep 30 19:19:57 xcpng-Companyxyz SM: [5749] ['/usr/sbin/tap-ctl', 'unpause', '-p', '26306', '-m', '8', '-a', 'vhd:/var/run/sr-mount/xyID2/xyID27.vhd']
Sep 30 19:19:57 xcpng-Companyxyz SM: [5749]  = 0
Sep 30 19:19:57 xcpng-Companyxyz SM: [5749] lock: released /var/lock/sm/xyID27/vdi

Sep 30 19:43:51 xcpng-Companyxyz SM: [13851] lock: released /var/lock/sm/xyID28/vdi
Sep 30 19:43:51 xcpng-Companyxyz SM: [13851] lock: acquired /var/lock/sm/xyID28/vdi
Sep 30 19:43:51 xcpng-Companyxyz SM: [13851] Unpause for xyID28
Sep 30 19:43:51 xcpng-Companyxyz SM: [13851] Realpath: /var/run/sr-mount/xyID2/xyID28.vhd
Sep 30 19:43:51 xcpng-Companyxyz SM: [13851] lock: opening lock file /var/lock/sm/xyID2/sr
Sep 30 19:43:51 xcpng-Companyxyz SM: [13851] ['/usr/sbin/td-util', 'query', 'vhd', '-vpfb', '/var/run/sr-mount/xyID2/xyID28.vhd']
Sep 30 19:43:51 xcpng-Companyxyz SM: [13851]   pread SUCCESS
Sep 30 19:43:51 xcpng-Companyxyz SM: [13851] Calling tap unpause with minor 7
Sep 30 19:43:51 xcpng-Companyxyz SM: [13851] ['/usr/sbin/tap-ctl', 'unpause', '-p', '13585', '-m', '7', '-a', 'vhd:/var/run/sr-mount/xyID2/xyID28.vhd']
Sep 30 19:43:51 xcpng-Companyxyz SM: [13851]  = 0

Sep 30 20:16:26 xcpng-Companyxyz SM: [24489] lock: released /var/lock/sm/IDxz1/vdi
Sep 30 20:16:27 xcpng-Companyxyz SM: [24522] nfs-on-slave.check(/var/run/sr-mount/xyID2/OLD_IDxz1.vhd)
Sep 30 20:16:59 xcpng-Companyxyz SM: [24695] nfs-on-slave.check(/var/run/sr-mount/xyID2/IDxz2.vhd)
Sep 30 20:17:02 xcpng-Companyxyz SM: [24706] nfs-on-slave.check(/var/run/sr-mount/xyID2/OLD_IDxz3.vhd)
Sep 30 20:29:07 xcpng-Companyxyz SM: [28403] nfs-on-slave.check(/var/run/sr-mount/xyID2/IDxz4.vhd)
Sep 30 20:29:15 xcpng-Companyxyz SM: [28437] nfs-on-slave.check(/var/run/sr-mount/xyID2/IDxz.vhd)
Sep 30 20:29:17 xcpng-Companyxyz SM: [28466] nfs-on-slave.check(/var/run/sr-mount/xyID2/OLD_IDxz6.vhd)
Sep 30 20:29:19 xcpng-Companyxyz SM: [28473] lock: opening lock file /var/lock/sm/xyID27/vdi
Sep 30 20:29:19 xcpng-Companyxyz SM: [28473] lock: acquired /var/lock/sm/xyID27/vdi
Sep 30 20:29:19 xcpng-Companyxyz SM: [28473] Pause for xyID27
Sep 30 20:29:19 xcpng-Companyxyz SM: [28473] Calling tap pause with minor 8
Sep 30 20:29:19 xcpng-Companyxyz SM: [28473] ['/usr/sbin/tap-ctl', 'pause', '-p', '26306', '-m', '8']

And They are repeated in today's log:

Oct  1 09:50:10 xcpng-xycompany SM: [17232] lock: released /var/lock/sm/xyzID1/vdi
Oct  1 09:50:11 xcpng-xycompany SM: [17241] lock: opening lock file /var/lock/sm/xyzID1/vdi
Oct  1 09:50:11 xcpng-xycompany SM: [17241] lock: acquired /var/lock/sm/xyzID1/vdi
Oct  1 09:50:11 xcpng-xycompany SM: [17241] Unpause for xyzID1
Oct  1 09:50:11 xcpng-xycompany SM: [17241] Realpath: /var/run/sr-mount/xyzID2/xyzID1.vhd
Oct  1 09:50:11 xcpng-xycompany SM: [17241] lock: opening lock file /var/lock/sm/xyzID3/sr
Oct  1 09:50:11 xcpng-xycompany SM: [17241] ['/usr/sbin/td-util', 'query', 'vhd', '-vpfb', '/var/run/sr-mount/xyzID3/xyzID1.vhd']
Oct  1 09:50:11 xcpng-xycompany SM: [17241]   pread SUCCESS
Oct  1 09:50:11 xcpng-xycompany SM: [17241] Calling tap unpause with minor 8
Oct  1 09:50:11 xcpng-xycompany SM: [17241] ['/usr/sbin/tap-ctl', 'unpause', '-p', '26306', '-m', '8', '-a', 'vhd:/var/run/sr-mount/xyzID3/xyzID1.vhd']
Oct  1 09:50:11 xcpng-xycompany SM: [17241]  = 0

But this is still wrong. What can I do with this?

@Danp grep does not return anything

@olivierlambert Yes