Sorry for the delay getting back to you. My day job takes preference :)
I elected not to reinstall macOS on a new volume as the potential downtime wasn't worth risking.
Instead I unboxed my brand new MacBook Pro Max, upgraded Monterey to 12.2, installed SoftRAID and rebooted.
I then closed down the Mac mini 2018 that has the two Thunderbay Mini's attached (4x 8TB SSD, RAID 0, 32TB on each). I simply removed the two Thunderbolt cables from the Mac mini and attached them to the MacBook Pro and booted. Monterey found both 32TB arrays without any problems so I simply shutdown the MacBook Pro. The behaviour was a little different with one array blinking only one light for about 40 seconds before it switched to the second array where it blinked on one light for about the same time before it rebooted and reported a different panic (see below).
With Monterey loaded and both arrays mounted, I then dismounted both arrays and shutdown the Mac Book Pro. It then went through the same steps described above and rebooted with a similar panic (see below)
My guess would be that this panic is the M1 version of the panic that I have been receiving on the 2018 Mac Minis.
I look forward to your feedback.
PANIC generated from Shutdown with arrays mounted
panic(cpu 1 caller 0xfffffe002ea82684): Halt/Restart Timed Out @IOPlatformExpert.cpp:883
Debugger message: panic
Memory ID: 0x1
OS release type: User
OS version: 21D49
Kernel version: Darwin Kernel Version 21.3.0: Wed Jan 5 21:37:58 PST 2022; root:xnu-8019.80.24~20/RELEASE_ARM64_T6000
Fileset Kernelcache UUID: 6FE5ED520EAABAFE218814C92CA517B4
Kernel UUID: BADF56F4-2876-3FF4-AC12-F25E78B09AA1
iBoot version: iBoot-7429.81.3
secure boot?: YES
Paniclog version: 13
KernelCache slide: 0x00000000268f4000
KernelCache base: 0xfffffe002d8f8000
Kernel slide: 0x0000000027128000
Kernel text base: 0xfffffe002e12c000
Kernel text exec slide: 0x0000000027210000
Kernel text exec base: 0xfffffe002e214000
mach_absolute_time: 0x1951fef09f7
Epoch Time: sec usec
Boot : 0x61f1d6da 0x0008a705
Sleep : 0x61f33df9 0x000b503a
Wake : 0x61f33e0e 0x000ba332
Calendar: 0x61f33f00 0x000b95ce
Zone info:
Foreign : 0xfffffe00362e0000 - 0xfffffe00362f4000
Native : 0xfffffe1000724000 - 0xfffffe3000724000
Readonly : 0xfffffe14cd3f0000 - 0xfffffe1666d84000
Metadata : 0xfffffe7aa04dc000 - 0xfffffe7aac408000
Bitmaps : 0xfffffe7aac408000 - 0xfffffe7ab7e1c000
CORE 0 PVH locks held: None
CORE 1 PVH locks held: None
CORE 2 PVH locks held: None
CORE 3 PVH locks held: None
CORE 4 PVH locks held: None
CORE 5 PVH locks held: None
CORE 6 PVH locks held: None
CORE 7 PVH locks held: None
CORE 8 PVH locks held: None
CORE 9 PVH locks held: None
CORE 0: PC=0xfffffe002e29af4c, LR=0xfffffe002e29af4c, FP=0xfffffe60e47dbef0
CORE 1 is the one that panicked. Check the full backtrace for details.
CORE 2: PC=0xfffffe002e29af4c, LR=0xfffffe002e29af4c, FP=0xfffffe606e24bef0
CORE 3: PC=0xfffffe002e29af4c, LR=0xfffffe002e29af4c, FP=0xfffffe60e884bef0
CORE 4: PC=0xfffffe002e29af4c, LR=0xfffffe002e29af4c, FP=0xfffffe601e113ef0
CORE 5: PC=0xfffffe002e29af4c, LR=0xfffffe002e29af4c, FP=0xfffffe70956cbef0
CORE 6: PC=0xfffffe002e29af4c, LR=0xfffffe002e29af4c, FP=0xfffffe7094b53ef0
CORE 7: PC=0xfffffe002e29af4c, LR=0xfffffe002e29af4c, FP=0xfffffe70953ebef0
CORE 8: PC=0xfffffe002e29af4c, LR=0xfffffe002e29af4c, FP=0xfffffe709561bef0
CORE 9: PC=0xfffffe002e29af4c, LR=0xfffffe002e29af4c, FP=0xfffffe601e233ef0
Panicked task 0xfffffe1b33858678: 0 pages, 597 threads: pid 0: kernel_task
Panicked thread: 0xfffffe1b33f98000, backtrace: 0xfffffe60e7ccb710, tid: 327464
lr: 0xfffffe002e2664e8 fp: 0xfffffe60e7ccb780
lr: 0xfffffe002e2661b8 fp: 0xfffffe60e7ccb7f0
lr: 0xfffffe002e3a62bc fp: 0xfffffe60e7ccb810
lr: 0xfffffe002e3986c8 fp: 0xfffffe60e7ccb890
lr: 0xfffffe002e396118 fp: 0xfffffe60e7ccb950
lr: 0xfffffe002e21b7f8 fp: 0xfffffe60e7ccb960
lr: 0xfffffe002e265e2c fp: 0xfffffe60e7ccbd00
lr: 0xfffffe002e265e2c fp: 0xfffffe60e7ccbd70
lr: 0xfffffe002ea79738 fp: 0xfffffe60e7ccbd90
lr: 0xfffffe002ea82684 fp: 0xfffffe60e7ccbdb0
lr: 0xfffffe002e2b7ab4 fp: 0xfffffe60e7ccbe30
lr: 0xfffffe002e2b8b08 fp: 0xfffffe60e7ccbf20
lr: 0xfffffe002e224e78 fp: 0x0000000000000000
last started kext at 1735932556849: com.softraid.driver.SoftRAID 6.2 (addr 0xfffffe002d78c000, size 7197)
loaded kexts:
com.softraid.driver.SoftRAID 6.2
com.apple.driver.AppleAHCIPort 351
com.apple.filesystems.smbfs 4.0
com.apple.filesystems.autofs 3.0
com.apple.fileutil 20.036.15
com.apple.driver.AppleBiometricServices 1
com.apple.driver.CoreKDL 1
com.apple.driver.AppleTopCaseHIDEventDriver 5020.1
com.apple.driver.SEPHibernation 1
com.apple.driver.BCMWLANFirmware4387.Hashstore 1
com.apple.driver.DiskImages.ReadWriteDiskImage 493.0.0
com.apple.driver.DiskImages.UDIFDiskImage 493.0.0
com.apple.driver.DiskImages.RAMBackingStore 493.0.0
com.apple.driver.DiskImages.FileBackingStore 493.0.0
com.apple.filesystems.apfs 1933.80.3
com.apple.driver.AppleUSBDeviceNCM 5.0.0
com.apple.driver.AppleThunderboltIP 4.0.3
com.apple.driver.AppleFileSystemDriver 3.0.1
com.apple.nke.l2tp 1.9
com.apple.filesystems.tmpfs 1
com.apple.filesystems.lifs 1
com.apple.IOTextEncryptionFamily 1.0.0
com.apple.filesystems.hfs.kext 582.60.2
com.apple.security.BootPolicy 1
com.apple.BootCache 40
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleEmbeddedSimpleSPINORFlasher 1
com.apple.driver.AppleCS42L84Audio 530.2
com.apple.driver.ApplePMP 1
com.apple.driver.AppleSmartIO2 1
com.apple.driver.AppleSN012776Amp 530.2
com.apple.driver.AppleT6000SOCTuner 1
com.apple.driver.AppleT6000CLPCv3 1
com.apple.driver.AppleSmartBatteryManager 161.0.0
com.apple.driver.AppleALSColorSensor 1.0.0d1
com.apple.driver.AppleAOPVoiceTrigger 100.1
com.apple.driver.ApplePMPFirmware 1
com.apple.driver.AppleDPDisplayTCON 1
com.apple.driver.usb.AppleSynopsysUSB40XHCI 1
com.apple.driver.AppleSPMIPMU 1.0.1
com.apple.driver.AppleAVD 555
com.apple.driver.AppleMCDP29XXUpdateSupport 1
com.apple.AGXG13X 188.10
com.apple.driver.AppleAVE2 530.3.0
com.apple.driver.AppleProResHW 128.2.0
com.apple.driver.AppleJPEGDriver 4.7.9
com.apple.driver.AppleSDXC 3.1.1
com.apple.driver.AppleSamsungSerial 1.0.0d1
com.apple.driver.AppleSerialShim 1
com.apple.driver.AppleMobileDispT600X-DCP 140.0
com.apple.driver.AppleM68Buttons 1.0.0d1
com.apple.driver.AppleT6001PMGR 1
com.apple.driver.AppleEventLogHandler 1
com.apple.driver.AppleS5L8960XNCO 1
com.apple.driver.AppleS8000AES 1
com.apple.driver.AppleS8000DWI 1.0.0d1
com.apple.driver.AppleInterruptControllerV2 1.0.0d1
com.apple.driver.AppleT8110DART 1
com.apple.driver.AppleBluetoothModule 1
com.apple.driver.AppleBCMWLANBusInterfacePCIe 1
com.apple.driver.AppleS5L8920XPWM 1.0.0d1
com.apple.driver.AudioDMAController-T600x 100.51
com.apple.driver.AppleT6000DART 1
com.apple.driver.AppleSPIMC 1
com.apple.driver.AppleS5L8940XI2C 1.0.0d2
com.apple.driver.AppleT6000 1
com.apple.iokit.IOUserEthernet 1.0.1
com.apple.driver.usb.AppleUSBUserHCI 1
com.apple.iokit.IOKitRegistryCompatibility 1
com.apple.iokit.EndpointSecurity 1
com.apple.driver.AppleDiskImages2 126.60.3
com.apple.AppleSystemPolicy 2.0.0
com.apple.nke.applicationfirewall 402
com.apple.kec.InvalidateHmac 1
com.apple.kec.AppleEncryptedArchive 1
com.apple.iokit.IOAHCIBlockStorage 333
com.apple.iokit.IOAHCIFamily 295
com.apple.driver.AppleThunderboltPCIUpAdapter 4.1.1
com.apple.driver.AppleThunderboltDPOutAdapter 8.5.1
com.apple.driver.driverkit.serial 6.0.0
com.apple.iokit.IOAVBFamily 1010.2
com.apple.plugin.IOgPTPPlugin 1000.11
com.apple.iokit.IOEthernetAVBController 1.1.0
com.apple.kext.triggers 1.0
com.apple.driver.AppleMesaSEPDriver 100.99
com.apple.iokit.IOBiometricFamily 1
com.apple.driver.AppleHSBluetoothDriver 5020.1
com.apple.driver.IOBluetoothHIDDriver 9.0.0
com.apple.driver.AppleHIDKeyboard 228
com.apple.driver.AppleActuatorDriver 5430.21
com.apple.driver.AppleMultitouchDriver 5430.21
com.apple.driver.AppleTrustedAccessory 1
com.apple.iokit.AppleSEPGenericTransfer 1
com.apple.driver.AppleSEPHDCPManager 1.0.1
com.apple.driver.DiskImages.KernelBacked 493.0.0
com.apple.driver.AppleXsanScheme 3
com.apple.driver.usb.networking 5.0.0
com.apple.driver.AppleThunderboltPCIDownAdapter 4.1.1
com.apple.driver.AppleThunderboltDPInAdapter 8.5.1
com.apple.driver.AppleThunderboltDPAdapterFamily 8.5.1
com.apple.driver.AppleThunderboltUSBDownAdapter 1.0.4
com.apple.nke.ppp 1.9
com.apple.driver.AppleHIDTransportSPI 5400.30
com.apple.driver.AppleHIDTransport 5400.30
com.apple.driver.AppleInputDeviceSupport 5400.30
com.apple.driver.AppleBSDKextStarter 3
com.apple.filesystems.hfs.encodings.kext 1
com.apple.driver.AppleConvergedIPCOLYBTControl 1
com.apple.driver.AppleConvergedPCI 1
com.apple.driver.AppleBluetoothDebug 1
com.apple.driver.AppleBTM 1.0.1
com.apple.driver.AppleDiagnosticDataAccessReadOnly 1.0.0
com.apple.driver.AppleCSEmbeddedAudio 530.2
com.apple.driver.AppleDCPDPTXProxy 1.0.0
com.apple.driver.DCPDPFamilyProxy 1
com.apple.driver.ApplePassthroughPPM 3.0
com.apple.driver.AppleAOPAudio 102.2
com.apple.driver.AppleEmbeddedAudio 530.2
com.apple.iokit.AppleARMIISAudio 100.1
com.apple.driver.AppleUSBXDCIARM 1.0
com.apple.driver.AppleUSBXDCI 1.0
com.apple.iokit.IOUSBDeviceFamily 2.0.0
com.apple.driver.usb.AppleSynopsysUSBXHCI 1
com.apple.driver.usb.AppleUSBXHCI 1.2
com.apple.driver.AppleEmbeddedUSBHost 1
com.apple.driver.usb.AppleUSBHub 1.2
com.apple.driver.usb.AppleUSBHostCompositeDevice 1.2
com.apple.driver.AppleStockholmControl 1.0.0
com.apple.driver.AppleSPU 1
com.apple.driver.AppleDialogPMU 1.0.1
com.apple.driver.AppleSPMI 1.0.1
com.apple.iokit.IONVMeFamily 2.1.0
com.apple.driver.AppleNANDConfigAccess 1.0.0
com.apple.driver.AppleHPM 3.4.4
com.apple.AGXFirmwareKextG13XRTBuddy 188.10
com.apple.AGXFirmwareKextRTBuddy64 188.10
com.apple.iokit.IOGPUFamily 35.11
com.apple.driver.DCPAVFamilyProxy 1
com.apple.iokit.IOMobileGraphicsFamily-DCP 343.0.0
com.apple.iokit.IOMobileGraphicsFamily 343.0.0
com.apple.driver.AppleSART 1
com.apple.driver.AppleT6000TypeCPhy 1
com.apple.driver.AppleT8103TypeCPhy 1
com.apple.driver.AppleDCP 1
com.apple.driver.AppleFirmwareKit 1
com.apple.driver.ApplePMGR 1
com.apple.driver.usb.AppleUSBHostPacketFilter 1.0
com.apple.driver.AppleARMWatchdogTimer 1
com.apple.driver.AppleDisplayCrossbar 1.0.0
com.apple.iokit.IODisplayPortFamily 1.0.0
com.apple.driver.AppleTypeCPhy 1
com.apple.driver.AppleThunderboltNHI 7.2.8
com.apple.driver.AppleT6000PCIeC 1
com.apple.iokit.IOThunderboltFamily 9.3.3
com.apple.driver.ApplePIODMA 1
com.apple.driver.AppleT600xPCIe 1
com.apple.driver.AppleMultiFunctionManager 1
com.apple.driver.AppleBluetoothDebugService 1
com.apple.driver.AppleBCMWLANCore 1.0.0
com.apple.iokit.IO80211Family 1200.12.2b1
com.apple.driver.IOImageLoader 1.0.0
com.apple.driver.AppleOLYHAL 1
com.apple.driver.corecapture 1.0.4
com.apple.driver.AppleEmbeddedPCIE 1
com.apple.driver.AppleMCA2-T600x 600.95
com.apple.driver.AppleEmbeddedAudioLibs 100.9.1
com.apple.driver.AppleFirmwareUpdateKext 1
com.apple.driver.AppleH13CameraInterface 4.87.0
com.apple.driver.AppleH10PearlCameraInterface 17.0.3
com.apple.driver.AppleGPIOICController 1.0.2
com.apple.driver.AppleFireStormErrorHandler 1
com.apple.driver.AppleMobileApNonce 1
com.apple.iokit.IOTimeSyncFamily 1000.11
com.apple.driver.DiskImages 493.0.0
com.apple.iokit.IOGraphicsFamily 593
com.apple.iokit.IOBluetoothSerialManager 9.0.0
com.apple.iokit.IOBluetoothHostControllerUSBTransport 9.0.0
com.apple.iokit.IOBluetoothHostControllerUARTTransport 9.0.0
com.apple.iokit.IOBluetoothHostControllerTransport 9.0.0
com.apple.driver.IOBluetoothHostControllerPCIeTransport 9.0.0
com.apple.iokit.IOBluetoothFamily 9.0.0
com.apple.driver.FairPlayIOKit 68.13.1
com.apple.iokit.CSRBluetoothHostControllerUSBTransport 9.0.0
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 9.0.0
com.apple.driver.AppleSSE 1.0
com.apple.driver.AppleSEPKeyStore 2
com.apple.driver.AppleUSBTDM 532.40.7
com.apple.iokit.IOUSBMassStorageDriver 209.40.6
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOSCSIBlockCommandsDevice 452.60.2
com.apple.iokit.IOSCSIArchitectureModelFamily 452.60.2
com.apple.driver.AppleIPAppender 1.0
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleEffaceableStorage 1.0
com.apple.driver.AppleCredentialManager 1.0
com.apple.driver.KernelRelayHost 1
com.apple.iokit.IOUSBHostFamily 1.2
com.apple.driver.AppleUSBHostMergeProperties 1.2
com.apple.driver.usb.AppleUSBCommon 1.0
com.apple.driver.AppleSMC 3.1.9
com.apple.driver.RTBuddy 1.0.0
com.apple.driver.AppleEmbeddedTempSensor 1.0.0
com.apple.driver.AppleARMPMU 1.0
com.apple.iokit.IOAccessoryManager 1.0.0
com.apple.driver.AppleOnboardSerial 1.0
com.apple.iokit.IOSkywalkFamily 1.0
com.apple.driver.mDNSOffloadUserClient 1.0.1b8
com.apple.iokit.IONetworkingFamily 3.4
com.apple.iokit.IOSerialFamily 11
com.apple.driver.AppleSEPManager 1.0.1
com.apple.driver.AppleA7IOP 1.0.2
com.apple.driver.IOSlaveProcessor 1
com.apple.driver.AppleBiometricSensor 2
com.apple.iokit.IOHIDFamily 2.0.0
com.apple.iokit.CoreAnalyticsFamily 1
com.apple.driver.AppleANELoadBalancer 5.35.2
com.apple.driver.AppleH11ANEInterface 5.35.0
com.apple.AUC 1.0
com.apple.iokit.IOAVFamily 1.0.0
com.apple.iokit.IOHDCPFamily 1.0.0
com.apple.iokit.IOCECFamily 1
com.apple.iokit.IOAudio2Family 1.0
com.apple.driver.AppleIISController 100.1
com.apple.driver.AppleAudioClockLibs 100.9.1
com.apple.driver.AppleM2ScalerCSCDriver 265.0.0
com.apple.iokit.IOSurface 302.11.1
com.apple.driver.IODARTFamily 1
com.apple.security.quarantine 4
com.apple.security.sandbox 300.0
com.apple.kext.AppleMatch 1.0.0d1
com.apple.driver.AppleMobileFileIntegrity 1.0.5
com.apple.security.AppleImage4 4.2.0
com.apple.kext.CoreTrust 1
com.apple.iokit.IOCryptoAcceleratorFamily 1.0.1
com.apple.driver.AppleARMPlatform 1.0.2
com.apple.iokit.IOStorageFamily 2.1
com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0
com.apple.iokit.IOReportFamily 47
com.apple.kec.pthread 1
com.apple.kec.Libm 1
com.apple.kec.corecrypto 12.0
** Stackshot Succeeded ** Bytes Traced 52720 (Uncompressed 196432) **
Panic generated from Shutdown with arrays unmounted but still attached
panic(cpu 0 caller 0xfffffe002d492684): Halt/Restart Timed Out @IOPlatformExpert.cpp:883
Debugger message: panic
Memory ID: 0x1
OS release type: User
OS version: 21D49
Kernel version: Darwin Kernel Version 21.3.0: Wed Jan 5 21:37:58 PST 2022; root:xnu-8019.80.24~20/RELEASE_ARM64_T6000
Fileset Kernelcache UUID: 6FE5ED520EAABAFE218814C92CA517B4
Kernel UUID: BADF56F4-2876-3FF4-AC12-F25E78B09AA1
iBoot version: iBoot-7429.81.3
secure boot?: YES
Paniclog version: 13
KernelCache slide: 0x0000000025304000
KernelCache base: 0xfffffe002c308000
Kernel slide: 0x0000000025b38000
Kernel text base: 0xfffffe002cb3c000
Kernel text exec slide: 0x0000000025c20000
Kernel text exec base: 0xfffffe002cc24000
mach_absolute_time: 0x13f02c77c
Epoch Time: sec usec
Boot : 0x61f33f0c 0x0007b542
Sleep : 0x00000000 0x00000000
Wake : 0x00000000 0x00000000
Calendar: 0x61f33fe4 0x000b3628
Zone info:
Foreign : 0xfffffe00362e0000 - 0xfffffe00362f4000
Native : 0xfffffe1000660000 - 0xfffffe3000660000
Readonly : 0xfffffe14cd32c000 - 0xfffffe1666cc0000
Metadata : 0xfffffe7749598000 - 0xfffffe77554c4000
Bitmaps : 0xfffffe77554c4000 - 0xfffffe7760ec8000
CORE 0 PVH locks held: None
CORE 1 PVH locks held: None
CORE 2 PVH locks held: None
CORE 3 PVH locks held: None
CORE 4 PVH locks held: None
CORE 5 PVH locks held: None
CORE 6 PVH locks held: None
CORE 7 PVH locks held: None
CORE 8 PVH locks held: None
CORE 9 PVH locks held: None
CORE 0 is the one that panicked. Check the full backtrace for details.
CORE 1: PC=0xfffffe002ccaaf4c, LR=0xfffffe002ccaaf4c, FP=0xfffffe60d7e9bef0
CORE 2: PC=0xfffffe002ccaaf4c, LR=0xfffffe002ccaaf4c, FP=0xfffffe601e3bbef0
CORE 3: PC=0xfffffe002ccaaf4c, LR=0xfffffe002ccaaf4c, FP=0xfffffe601dd4bef0
CORE 4: PC=0xfffffe002cdab4c8, LR=0xfffffe002cdab4c4, FP=0xfffffe60ff403e80
CORE 5: PC=0xfffffe002ccaaf4c, LR=0xfffffe002ccaaf4c, FP=0xfffffe7094e43ef0
CORE 6: PC=0xfffffe002ccaaf50, LR=0xfffffe002ccaaf4c, FP=0xfffffe60e8463ef0
CORE 7: PC=0xfffffe002ccaaf4c, LR=0xfffffe002ccaaf4c, FP=0xfffffe60feef3ef0
CORE 8: PC=0xfffffe002ccaaf4c, LR=0xfffffe002ccaaf4c, FP=0xfffffe60ff36bef0
CORE 9: PC=0xfffffe002ccaaf4c, LR=0xfffffe002ccaaf4c, FP=0xfffffe601e16bef0
Panicked task 0xfffffe1666d90678: 0 pages, 597 threads: pid 0: kernel_task
Panicked thread: 0xfffffe24cb9e29a0, backtrace: 0xfffffe60e7e33710, tid: 9431
lr: 0xfffffe002cc764e8 fp: 0xfffffe60e7e33780
lr: 0xfffffe002cc761b8 fp: 0xfffffe60e7e337f0
lr: 0xfffffe002cdb62bc fp: 0xfffffe60e7e33810
lr: 0xfffffe002cda86c8 fp: 0xfffffe60e7e33890
lr: 0xfffffe002cda6118 fp: 0xfffffe60e7e33950
lr: 0xfffffe002cc2b7f8 fp: 0xfffffe60e7e33960
lr: 0xfffffe002cc75e2c fp: 0xfffffe60e7e33d00
lr: 0xfffffe002cc75e2c fp: 0xfffffe60e7e33d70
lr: 0xfffffe002d489738 fp: 0xfffffe60e7e33d90
lr: 0xfffffe002d492684 fp: 0xfffffe60e7e33db0
lr: 0xfffffe002ccc7ab4 fp: 0xfffffe60e7e33e30
lr: 0xfffffe002ccc8b08 fp: 0xfffffe60e7e33f20
lr: 0xfffffe002cc34e78 fp: 0x0000000000000000
last started kext at 3444520844: com.apple.filesystems.smbfs 4.0 (addr 0xfffffe002cb20c70, size 64483)
loaded kexts:
com.softraid.driver.SoftRAID 6.2
com.apple.filesystems.smbfs 4.0
com.apple.filesystems.autofs 3.0
com.apple.fileutil 20.036.15
com.apple.driver.AppleAHCIPort 351
com.apple.driver.AppleTopCaseHIDEventDriver 5020.1
com.apple.driver.AppleBiometricServices 1
com.apple.driver.CoreKDL 1
com.apple.driver.DiskImages.ReadWriteDiskImage 493.0.0
com.apple.driver.DiskImages.UDIFDiskImage 493.0.0
com.apple.driver.DiskImages.RAMBackingStore 493.0.0
com.apple.driver.DiskImages.FileBackingStore 493.0.0
com.apple.driver.BCMWLANFirmware4387.Hashstore 1
com.apple.driver.SEPHibernation 1
com.apple.filesystems.apfs 1933.80.3
com.apple.driver.AppleUSBDeviceNCM 5.0.0
com.apple.driver.AppleThunderboltIP 4.0.3
com.apple.driver.AppleFileSystemDriver 3.0.1
com.apple.nke.l2tp 1.9
com.apple.filesystems.tmpfs 1
com.apple.filesystems.lifs 1
com.apple.IOTextEncryptionFamily 1.0.0
com.apple.filesystems.hfs.kext 582.60.2
com.apple.security.BootPolicy 1
com.apple.BootCache 40
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.driver.ApplePMP 1
com.apple.driver.AppleSmartIO2 1
com.apple.AppleEmbeddedSimpleSPINORFlasher 1
com.apple.driver.AppleCS42L84Audio 530.2
com.apple.driver.AppleSN012776Amp 530.2
com.apple.driver.AppleT6000SOCTuner 1
com.apple.driver.AppleT6000CLPCv3 1
com.apple.driver.AppleSmartBatteryManager 161.0.0
com.apple.driver.AppleALSColorSensor 1.0.0d1
com.apple.driver.AppleAOPVoiceTrigger 100.1
com.apple.driver.ApplePMPFirmware 1
com.apple.driver.AppleDPDisplayTCON 1
com.apple.driver.usb.AppleSynopsysUSB40XHCI 1
com.apple.driver.AppleSPMIPMU 1.0.1
com.apple.driver.AppleAVD 555
com.apple.driver.AppleMCDP29XXUpdateSupport 1
com.apple.AGXG13X 188.10
com.apple.driver.AppleAVE2 530.3.0
com.apple.driver.AppleProResHW 128.2.0
com.apple.driver.AppleJPEGDriver 4.7.9
com.apple.driver.AppleSDXC 3.1.1
com.apple.driver.AppleSamsungSerial 1.0.0d1
com.apple.driver.AppleSerialShim 1
com.apple.driver.AppleMobileDispT600X-DCP 140.0
com.apple.driver.AppleM68Buttons 1.0.0d1
com.apple.driver.AppleT6001PMGR 1
com.apple.driver.AppleEventLogHandler 1
com.apple.driver.AppleS5L8960XNCO 1
com.apple.driver.AppleS8000AES 1
com.apple.driver.AppleS8000DWI 1.0.0d1
com.apple.driver.AppleInterruptControllerV2 1.0.0d1
com.apple.driver.AppleT8110DART 1
com.apple.driver.AppleBluetoothModule 1
com.apple.driver.AppleBCMWLANBusInterfacePCIe 1
com.apple.driver.AppleS5L8920XPWM 1.0.0d1
com.apple.driver.AudioDMAController-T600x 100.51
com.apple.driver.AppleT6000DART 1
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No rush in reporting back!
It does appear as the same issue. If, in 12.2, you unmount your volumes, then shutdown, same panic? Or does it shut down correctly, if you unmount first?
In both cases (ie Mac Mini and MacBook Pro) it does not shutdown properly when the arrays are unmounted. The only way I can have a successful shutdown is to unmount both arrays and then either disconnect the power or disconnect the thunderbolt cable from both arrays.
Is it worthwhile starting a new thread with the topic of this particular "known problem" - Crash on shutdowns with too many disks connected
It could start with the results of what I have discovered so far in this thread:-
- This problem can occur with as few as 4 disks attached (Monterey 12.2, Mac Mini 2018, Thunderbay Mini with 4x 8TB 2.5" in RAID 0)
- The same problem was replicated on a brand new M1 system (Monterey 12.2, MacBook Pro Max, Thunderbay Mini with 4x 8TB 2.5" in RAID 0)
- It is not related to any suspected RAID 5 panics
- Unmounting the arrays before shut down does NOT solve the problem
- The only way to avoid the problem is by unmounting all the array(s) and then either disconnecting the Thunderbolt cable(s) or removing the power from each array before shut down
- It is not limited to OWC devices (eg LaCie 5big Thunderbolt 2 in JBOD mode)
- The suspected "flush cache" to each disk causing a timeout panic does not appear to apply to the Thunderbay Mini RAID 0 array where only one disk light flashes during the shutdown process
I had a long phone call from an Apple support supervisor who believed that SoftRAID was not correctly releasing (ie ejecting) the drives during the shutdown process which led to the eventual timeout panic. I asked him if I should raise a case and he advised that he would send me a link to a current case rather than wasting everybody's time. It's been 3 days since I made the phone call and I still have not received any link.
We do have an open case on this with Apple.
We demonstrated a failure scenario with all Apple formatted drives in a bug report. I am not sure the status, except it is open.
Generally it happens with around 10 disks connected, because of the pattern you detected. the disk caches are flushed one at a time (synchronously), and if the total process takes more than 2 minutes, the system panics. I hypothesize your disks are slow to flush their caches.
Can you clarify number 7? Do you mean a RAID 0 in Apple format?
The RAID 0 is SoftRAID 0 (item 7.)
"hypothesize your disks are slow to flush their caches"
I doubt that an SSD drive would have slower cache than spinning disks
The drive could be very slow to "TRIM" itself.
A watchdog panic is definitely a timer issue for some process somewhere that takes longer than expected. And this bug has existed for years.
Recently upgraded one of my 2018 Mac Mini's to a new M1 Mac mini. Installation went unbelievably smoothly with two OWC Thunderbay 4 Mini's attached. Both have 4x 8TB SSD's running RAID 0 with great performance (don't worry, its all read only with backup elsewhere on RAID5). The biggest surprise was that I could now shutdown the M1 Mac mini (very quickly) without the usual timeout panic I have been living with on both 2018 Mac Mini's for what seems like forever.
Yesterday we had a power failure. When the power came back on the M1 Mac mini and both RAID 0 arrays loaded without any problems. The bad news is that the timeout panic is back when I try to shutdown and then it subsequently reboots. I tried all the usual combinations of ejecting drives, powering off drives etc until I discovered that if I ejected both drives and powered off one of them I could now successfully shutdown even though it took substantially longer (70 seconds) than before the power failure with both drives mounted (10 seconds). Yes, I now see the telltale blinking lights on each of the 8TB SSD's during the shutdown process which I didn't see before the power failure.
Wasted 2 hours on the phone with Apple. Long story short, Apple is not aware of the "known timeout bug" and they suggested I contact you. 🤨
The tech you talked to may not have been aware, but Apple engineering is and it is going to be fixed, eventually.
Sorry you are still getting this, interesting it restarted after a crash.