Kernel panics when mounting or unmounting zfs drive

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Kernel panics when mounting or unmounting zfs drive

Post by jdleider » Thu Oct 11, 2012 6:00 pm

I found a bunch of posts about kernel panics but none seemed to have the same thread name. That and searching for "kernel panic" on this board said it was too common of search terms, so I've created this post.

Please note, this is not the same issue as collegeitdept was having. I can boot with the drive connected to the USB and access the drive just fine. However there is an intermittent KP if the drive is mounted or unmounted while the OS is running. Also, this kernel panic seems to happen just before or just after returning from sleep mode. I have an external drive with (2) 3TB disks in a zfs mirror connected through USB 2.0. The kernel panic and other diagnostic information is below.


Code: Select all
$ zpool status
  pool: zfs-media
 state: ONLINE
 scan: none requested
config:

   NAME                                           STATE     READ WRITE CKSUM
   zfs-media                                      ONLINE       0     0     0
     mirror-0                                     ONLINE       0     0     0
       GPTE_5B6D31A0-766F-4E48-BBD8-EE631D3127DA  ONLINE       0     0     0  at disk2s2
       GPTE_1376B8FF-B8C2-408B-9C15-AB1D033F8BBD  ONLINE       0     0     0  at disk4s2

errors: No known data errors


Code: Select all
$ zpool get all zfs-media
NAME       PROPERTY       VALUE      SOURCE
zfs-media  size           2.73Ti     -
zfs-media  capacity       6%         -
zfs-media  altroot        -          default
zfs-media  health         ONLINE     -
zfs-media  guid           6358071128368857632  default
zfs-media  version        28         default
zfs-media  failmode       continue   default
zfs-media  listsnapshots  off        default
zfs-media  autoexpand     off        default
zfs-media  free           2.55Ti     -
zfs-media  allocated      183Gi      -
zfs-media  readonly       off        -
zfs-media  ashift         12         local


Code: Select all
$ zstat

 v2012.09.14     54 threads        1 mount         3334 vnodes     18:59:05


Code: Select all
Interval Since Last Panic Report:  28512 sec
Panics Since Last Report:          2
Anonymous UUID:                    8C7C94B5-3FED-5B10-2327-9376926B55FD

Thu Oct 11 18:45:12 2012
panic(cpu 1 caller 0xffffff80016b7bd5): Kernel trap at 0xffffff7f81b7fcf5, type 14=page fault, registers:
CR0: 0x000000008001003b, CR2: 0x0000000000000000, CR3: 0x000000006e27d000, CR4: 0x0000000000000660
RAX: 0x0000000000000000, RBX: 0xffffff8014249a00, RCX: 0xffffff8001ce0500, RDX: 0xffffff80142fdd00
RSP: 0xffffff810c97b060, RBP: 0xffffff810c97b080, RSI: 0x0000000020000001, RDI: 0x0000000000000000
R8:  0x0000000000000dfb, R9:  0x0000000000000000, R10: 0xffffff8018ef2ea0, R11: 0x0000000000000000
R12: 0xffffff8014235f00, R13: 0xffffff8014249a00, R14: 0x0000000000000001, R15: 0x0000000000000000
RFL: 0x0000000000010282, RIP: 0xffffff7f81b7fcf5, CS:  0x0000000000000008, SS:  0x0000000000000010
Fault CR2: 0x0000000000000000, Error code: 0x0000000000000000, Fault CPU: 0x1

Backtrace (CPU 1), Frame : Return Address
0xffffff810c97ad00 : 0xffffff800161d626
0xffffff810c97ad70 : 0xffffff80016b7bd5
0xffffff810c97af40 : 0xffffff80016ce4ed
0xffffff810c97af60 : 0xffffff7f81b7fcf5
0xffffff810c97b080 : 0xffffff8001a3072b
0xffffff810c97b0e0 : 0xffffff7f81b87395
0xffffff810c97b0f0 : 0xffffff7f81b816d1
0xffffff810c97b150 : 0xffffff8001a3072b
0xffffff810c97b1b0 : 0xffffff7f81b87395
0xffffff810c97b1c0 : 0xffffff7f81b8275f
0xffffff810c97b230 : 0xffffff800171fb5c
0xffffff810c97b2a0 : 0xffffff8001711c46
0xffffff810c97b2e0 : 0xffffff800170936c
0xffffff810c97b390 : 0xffffff8001708acb
0xffffff810c97b4f0 : 0xffffff80016f3f40
0xffffff810c97b6c0 : 0xffffff7f81c34438
0xffffff810c97b790 : 0xffffff80016f8aee
0xffffff810c97bae0 : 0xffffff80016f97fa
0xffffff810c97bf10 : 0xffffff80016f8fd9
0xffffff810c97bf50 : 0xffffff80019e182a
0xffffff810c97bfb0 : 0xffffff80016ced33
      Kernel Extensions in backtrace:
         com.apple.iokit.IOStorageFamily(1.8)[A3CC4E44-8E10-3D9A-BA8E-95743E79D125]@0xffffff7f81b78000->0xffffff7f81b9cfff
         com.getgreenbytes.filesystem.zfs(2012.9.14)[8241F82D-269B-30AD-86AB-AB7C3D520F2B]@0xffffff7f81ba5000->0xffffff7f81d41fff
            dependency: com.apple.iokit.IOStorageFamily(1.8)[A3CC4E44-8E10-3D9A-BA8E-95743E79D125]@0xffffff7f81b78000

BSD process name corresponding to current thread: zpool

Mac OS version:
12C60

Kernel version:
Darwin Kernel Version 12.2.0: Sat Aug 25 00:48:52 PDT 2012; root:xnu-2050.18.24~1/RELEASE_X86_64
Kernel UUID: 69A5853F-375A-3EF4-9247-478FD0247333
Kernel slide:     0x0000000001400000
Kernel text base: 0xffffff8001600000
System model name: MacBook5,1 (Mac-F42D89C8)

System uptime in nanoseconds: 8777647699150
last loaded kext at 8620617873065: com.apple.iokit.SCSITaskUserClient   3.5.1 (addr 0xffffff7f83b26000, size 36864)
last unloaded kext at 165468964141: com.apple.driver.AppleUSBTCKeyEventDriver   235.4 (addr 0xffffff7f8349b000, size 8192)
loaded kexts:
com.parallels.kext.prl_vnic   7.0 15107.796624
com.parallels.kext.prl_netbridge   7.0 15107.796624
com.parallels.kext.prl_hid_hook   7.0 15107.796624
com.parallels.kext.prl_hypervisor   7.0 15107.796624
com.parallels.kext.prl_usb_connect   7.0 15107.796624
com.getgreenbytes.driver.zfs   2012.09.14
com.getgreenbytes.filesystem.zfs   2012.09.14
at.obdev.nke.LittleSnitch   3871
com.apple.iokit.SCSITaskUserClient   3.5.1
com.apple.driver.AppleUSBCDC   4.1.22
com.apple.filesystems.afpfs   10.0
com.apple.nke.asp_tcp   7.0.0
com.apple.filesystems.smbfs   1.8
com.apple.driver.AudioAUUC   1.60
com.apple.driver.AppleHWSensor   1.9.5d0
com.apple.filesystems.autofs   3.0
com.apple.iokit.IOBluetoothSerialManager   4.0.9f33
com.apple.driver.AGPM   100.12.69
com.apple.driver.AppleMikeyHIDDriver   122
com.apple.driver.AppleHDA   2.3.1f2
com.apple.driver.AppleMikeyDriver   2.3.1f2
com.apple.iokit.IOUserEthernet   1.0.0d1
com.apple.Dont_Steal_Mac_OS_X   7.0.0
com.apple.driver.ApplePolicyControl   3.2.11
com.apple.driver.ACPI_SMC_PlatformPlugin   1.0.0
com.apple.driver.AppleLPC   1.6.0
com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport   4.0.9f33
com.apple.driver.AppleUpstreamUserClient   3.5.10
com.apple.driver.AppleSMCLMU   2.0.2d0
com.apple.driver.AppleBacklight   170.2.3
com.apple.driver.AppleMCCSControl   1.0.33
com.apple.GeForce   8.0.0
com.apple.driver.SMCMotionSensor   3.0.2d6
com.apple.driver.AppleUSBTCButtons   235.4
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless   1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib   1.0.0d1
com.apple.BootCache   34
com.apple.driver.AppleUSBTCKeyboard   235.4
com.apple.driver.AppleIRController   320.15
com.apple.driver.XsanFilter   404
com.apple.iokit.IOAHCIBlockStorage   2.2.2
com.apple.driver.AppleAHCIPort   2.4.1
com.apple.nvenet   2.0.19
com.apple.driver.AppleUSBHub   5.2.5
com.apple.driver.AirPort.Brcm4331   602.15.22
com.apple.driver.AppleUSBOHCI   5.2.5
com.apple.driver.AppleUSBEHCI   5.4.0
com.apple.driver.AppleEFINVRAM   1.6.1
com.apple.driver.AppleSmartBatteryManager   161.0.0
com.apple.driver.AppleRTC   1.5
com.apple.driver.AppleHPET   1.7
com.apple.driver.AppleACPIButtons   1.6
com.apple.driver.AppleSMBIOS   1.9
com.apple.driver.AppleACPIEC   1.6
com.apple.driver.AppleAPIC   1.6
com.apple.driver.AppleIntelCPUPowerManagementClient   196.0.0
com.apple.nke.applicationfirewall   4.0.39
com.apple.security.quarantine   2
com.apple.driver.AppleIntelCPUPowerManagement   196.0.0
com.apple.security.SecureRemotePassword   1.0
com.apple.kext.triggers   1.0
com.apple.iokit.IOSerialFamily   10.0.6
com.apple.driver.DspFuncLib   2.3.1f2
com.apple.iokit.IOAudioFamily   1.8.9fc10
com.apple.kext.OSvKernDSPLib   1.6
com.apple.iokit.IOSurface   86.0.3
com.apple.iokit.IOBluetoothFamily   4.0.9f33
com.apple.driver.IOPlatformPluginLegacy   1.0.0
com.apple.driver.AppleSMBus
Model: MacBook5,1, BootROM MB51.007D.B03, 2 processors, Intel Core 2 Duo, 2 GHz, 8 GB, SMC 1.32f8
Graphics: NVIDIA GeForce 9400M, NVIDIA GeForce 9400M, PCI, 256 MB
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1067 MHz, 0x859B, 0x435435313236344243313036372E4D313646
Memory Module: BANK 0/DIMM1, 4 GB, DDR3, 1067 MHz, 0x857F, 0x483634353155363446373036364700000000
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8D), Broadcom BCM43xx 1.0 (5.106.98.81.22)
Bluetooth: Version 4.0.9f33 10885, 2 service, 11 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: M4-CT128M4SSD2, 128.04 GB
Serial ATA Device: Hitachi HTS543216L9SA02, 160.04 GB
USB Device: USB to ATA/ATAPI Bridge, 0x152d  (JMicron Technology Corp.), 0x0539, 0x26200000 / 2
USB Device: Built-in iSight, apple_vendor_id, 0x8507, 0x24400000 / 2
USB Device: BRCM2046 Hub, 0x0a5c  (Broadcom Corp.), 0x4500, 0x06100000 / 2
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8213, 0x06110000 / 3
USB Device: Apple Internal Keyboard / Trackpad, apple_vendor_id, 0x0236, 0x04600000 / 3
USB Device: IR Receiver, apple_vendor_id, 0x8242, 0x04500000 / 2



These were the last lines in system.log before the reboot:
Code: Select all
Oct 11 18:43:56 Justins-MacBook kernel[0]: USBMSC Identifier (non-unique): 1F1192FFFFFF 0x152d 0x539 0x100
Oct 11 18:43:59 Justins-MacBook kernel[0]: ZFSLabelScheme:probe: label 'zfs-media', vdev 4280818869508384004
Oct 11 18:43:59 Justins-MacBook kernel[0]: ZFSLabelScheme:start: 'zfs-media' critical mass with 1 vdev(s) (importing)
Oct 11 18:44:00 Justins-MacBook kernel[0]: zfsx_kev_importpool:'zfs-media' (6358071128368857632)
Oct 11 18:44:01 Justins-MacBook kernel[0]: ZFSLabelScheme:probe: label 'zfs-media', vdev 7814524605878006111
jdleider Offline


 
Posts: 8
Joined: Fri Oct 05, 2012 9:00 am

forum search issues

Post by grahamperrin » Thu Oct 11, 2012 11:42 pm

jdleider wrote:… searching for "kernel panic" on this board said it was too common of search terms …


For a workaround that's good in most cases:

General advice for newcomers to this phpBB-powered forum
grahamperrin Offline

User avatar
 
Posts: 1596
Joined: Fri Sep 14, 2012 10:21 pm
Location: Brighton and Hove, United Kingdom

Re: Kernel panics when mounting or unmounting zfs drive

Post by grahamperrin » Thu Oct 11, 2012 11:51 pm

com.getgreenbytes.filesystem.zfs 2012.09.14

– that's from outdated ZEVO Community Edition 1.1, which was associated with kernel panics on Mountain Lion with some approaches to mount.

Please see the Announcements sub-forum, and use the update feature in the ZEVO pane of System Preferences.

Postscript: current download routine delivers an outdated installer
grahamperrin Offline

User avatar
 
Posts: 1596
Joined: Fri Sep 14, 2012 10:21 pm
Location: Brighton and Hove, United Kingdom

Re: Kernel panics when mounting or unmounting zfs drive

Post by jdleider » Sat Oct 13, 2012 9:43 am

Thank you. It didn't occur to me to update the zfs package since I had downloaded what I thought was the most recent version the day prior. However, now that I am running the latest 1.1.1 (2012.9.23). I still have kernel panics.

Code: Select all
Sat Oct 13 10:39:32 2012
panic(cpu 0 caller 0xffffff80012b7bd5): Kernel trap at 0xffffff7f8177fcf5, type 14=page fault, registers:
CR0: 0x000000008001003b, CR2: 0x0000000000000000, CR3: 0x000000003d859000, CR4: 0x0000000000000660
RAX: 0x0000000000000000, RBX: 0xffffff8013720300, RCX: 0xffffff80018e0500, RDX: 0xffffff8013f28f00
RSP: 0xffffff80e9333060, RBP: 0xffffff80e9333080, RSI: 0x0000000020000001, RDI: 0x0000000000000000
R8:  0x0000000000000cf0, R9:  0x0000000000000000, R10: 0xffffff8020593ea0, R11: 0x0000000000000206
R12: 0xffffff801371e000, R13: 0xffffff8013720300, R14: 0x0000000000000001, R15: 0x0000000000000000
RFL: 0x0000000000010282, RIP: 0xffffff7f8177fcf5, CS:  0x0000000000000008, SS:  0x0000000000000010
Fault CR2: 0x0000000000000000, Error code: 0x0000000000000000, Fault CPU: 0x0

Backtrace (CPU 0), Frame : Return Address
0xffffff80e9332d00 : 0xffffff800121d626
0xffffff80e9332d70 : 0xffffff80012b7bd5
0xffffff80e9332f40 : 0xffffff80012ce4ed
0xffffff80e9332f60 : 0xffffff7f8177fcf5
0xffffff80e9333080 : 0xffffff800163072b
0xffffff80e93330e0 : 0xffffff7f81787395
0xffffff80e93330f0 : 0xffffff7f817816d1
0xffffff80e9333150 : 0xffffff800163072b
0xffffff80e93331b0 : 0xffffff7f81787395
0xffffff80e93331c0 : 0xffffff7f8178275f
0xffffff80e9333230 : 0xffffff800131fb5c
0xffffff80e93332a0 : 0xffffff8001311c46
0xffffff80e93332e0 : 0xffffff800130936c
0xffffff80e9333390 : 0xffffff8001308acb
0xffffff80e93334f0 : 0xffffff80012f3f40
0xffffff80e93336c0 : 0xffffff7f81833d6a
0xffffff80e9333790 : 0xffffff80012f8aee
0xffffff80e9333ae0 : 0xffffff80012f97fa
0xffffff80e9333f10 : 0xffffff80012f8fd9
0xffffff80e9333f50 : 0xffffff80015e182a
0xffffff80e9333fb0 : 0xffffff80012ced33
      Kernel Extensions in backtrace:
         com.apple.iokit.IOStorageFamily(1.8)[A3CC4E44-8E10-3D9A-BA8E-95743E79D125]@0xffffff7f81778000->0xffffff7f8179cfff
         com.getgreenbytes.filesystem.zfs(2012.9.23)[04497DBB-8849-31D8-8496-BE10E5711C53]@0xffffff7f817a5000->0xffffff7f8193ffff
            dependency: com.apple.iokit.IOStorageFamily(1.8)[A3CC4E44-8E10-3D9A-BA8E-95743E79D125]@0xffffff7f81778000

BSD process name corresponding to current thread: zpool

Mac OS version:
12C60

Kernel version:
Darwin Kernel Version 12.2.0: Sat Aug 25 00:48:52 PDT 2012; root:xnu-2050.18.24~1/RELEASE_X86_64
Kernel UUID: 69A5853F-375A-3EF4-9247-478FD0247333
Kernel slide:     0x0000000001000000
Kernel text base: 0xffffff8001200000
System model name: MacBook5,1 (Mac-F42D89C8)

System uptime in nanoseconds: 3035293960476
last loaded kext at 3025367895201: com.apple.iokit.SCSITaskUserClient   3.5.1 (addr 0xffffff7f836b3000, size 36864)
last unloaded kext at 111367618969: com.apple.driver.AppleFileSystemDriver   3.0.1 (addr 0xffffff7f8354c000, size 8192)
loaded kexts:
com.parallels.kext.prl_vnic   7.0 15107.796624
com.parallels.kext.prl_netbridge   7.0 15107.796624
com.parallels.kext.prl_hid_hook   7.0 15107.796624
com.parallels.kext.prl_hypervisor   7.0 15107.796624
com.parallels.kext.prl_usb_connect   7.0 15107.796624
com.getgreenbytes.driver.zfs   2012.09.14
com.getgreenbytes.filesystem.zfs   2012.09.23
at.obdev.nke.LittleSnitch   3871
com.apple.iokit.SCSITaskUserClient   3.5.1
com.apple.driver.AppleUSBCDC   4.1.22
com.apple.driver.AudioAUUC   1.60
com.apple.driver.AppleHWSensor   1.9.5d0
com.apple.filesystems.autofs   3.0
com.apple.iokit.IOBluetoothSerialManager   4.0.9f33
com.apple.driver.AGPM   100.12.69
com.apple.driver.AppleMikeyHIDDriver   122
com.apple.driver.AppleHDA   2.3.1f2
com.apple.iokit.IOUserEthernet   1.0.0d1
com.apple.Dont_Steal_Mac_OS_X   7.0.0
com.apple.driver.ApplePolicyControl   3.2.11
com.apple.driver.ACPI_SMC_PlatformPlugin   1.0.0
com.apple.driver.AppleSMCLMU   2.0.2d0
com.apple.driver.AppleLPC   1.6.0
com.apple.driver.AppleMikeyDriver   2.3.1f2
com.apple.driver.AppleBacklight   170.2.3
com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport   4.0.9f33
com.apple.driver.AppleUpstreamUserClient   3.5.10
com.apple.driver.AppleMCCSControl   1.0.33
com.apple.GeForce   8.0.0
com.apple.driver.SMCMotionSensor   3.0.2d6
com.apple.driver.AppleUSBTCButtons   235.4
com.apple.driver.AppleIRController   320.15
com.apple.driver.AppleUSBTCKeyboard   235.4
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless   1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib   1.0.0d1
com.apple.BootCache   34
com.apple.driver.XsanFilter   404
com.apple.iokit.IOAHCIBlockStorage   2.2.2
com.apple.driver.AppleSmartBatteryManager   161.0.0
com.apple.driver.AppleUSBHub   5.2.5
com.apple.driver.AirPort.Brcm4331   602.15.22
com.apple.driver.AppleAHCIPort   2.4.1
com.apple.nvenet   2.0.19
com.apple.driver.AppleUSBEHCI   5.4.0
com.apple.driver.AppleUSBOHCI   5.2.5
com.apple.driver.AppleEFINVRAM   1.6.1
com.apple.driver.AppleRTC   1.5
com.apple.driver.AppleHPET   1.7
com.apple.driver.AppleACPIButtons   1.6
com.apple.driver.AppleSMBIOS   1.9
com.apple.driver.AppleACPIEC   1.6
com.apple.driver.AppleAPIC   1.6
com.apple.driver.AppleIntelCPUPowerManagementClient   196.0.0
com.apple.nke.applicationfirewall   4.0.39
com.apple.security.quarantine   2
com.apple.driver.AppleIntelCPUPowerManagement   196.0.0
com.apple.kext.triggers   1.0
com.apple.iokit.IOSerialFamily   10.0.6
com.apple.driver.DspFuncLib   2.3.1f2
com.apple.iokit.IOAudioFamily   1.8.9fc10
com.apple.kext.OSvKernDSPLib   1.6
com.apple.iokit.IOSurface   86.0.3
com.apple.iokit.IOBluetoothFamily   4.0.9f33
com.apple.driver.IOPlatformPluginLegacy   1.0.0
com.apple.driver.IOPlatformPluginFamily   5.2.0d16
com.apple.driver.AppleHDAController   2.3.1f2
com.apple.iokit.IOHDAFamily   2.3.1f2
com.apple.driver.AppleSMBusPCI   1.0.10d0
com.apple.driver.AppleGraphicsControl   3.2.11
com.apple.driver.AppleBacklightExpert   1.0.4
com.apple.iokit.AppleBluetoothHCIControllerUSBTransport   4.0.9f33
com.apple.driver.AppleSMBusController   1.0.10d0
com.apple.nvidia.nv50hal   8.0.0
com.apple.NVDAResman   8.0.0
com.apple.iokit.IONDRVSupport   2.3.5
com.apple.iokit.IOGraphicsFamily   2.3.5
com.apple.driver.AppleSMC   3.1.4d2
com.apple.iokit.IOSCSIBlockCommandsDevice   3.5.1
com.apple.iokit.IOUSBMassStorageClass   3.5.0
com.apple.iokit.IOSCSIArchitectureModelFamily   3.5.1
com.apple.driver.AppleUSBMultitouch   235.7
com.apple.iokit.IOUSBHIDDriver   5.2.5
com.apple.driver.AppleUSBMergeNub   5.2.5
com.apple.driver.AppleUSBComposite   5.2.5
com.apple.iokit.IOUSBUserClient   5.2.5
com.apple.iokit.IO80211Family   500.15
com.apple.iokit.IOAHCIFamily   2.2.1
com.apple.iokit.IONetworkingFamily   3.0
com.apple.driver.NVSMU   2.2.9
com.apple.iokit.IOUSBFamily   5.4.0
com.apple.driver.AppleEFIRuntime   1.6.1
com.apple.iokit.IOHIDFamily   1.8.0
com.apple.iokit.IOSMBusFamily   1.1
com.apple.security.sandbox   220
com.apple.kext.AppleMatch   1.0.0d1
com.apple.security.TMSafetyNet   7
com.apple.driver.DiskImages   344
com.apple.iokit.IOStorageFamily   1.8
com.apple.driver.AppleKeyStore   28.21
com.apple.driver.AppleACPIPlatform   1.6
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Re: Kernel panics when mounting or unmounting zfs drive

Post by grahamperrin » Sat Oct 13, 2012 5:40 pm

Thanks.

Can you get reproducible steps to the panic?

Whilst a search for current thread zpool did not find this topic, I don't recall seeing any other reports of kernel panic with

BSD process name corresponding to current thread: zpool
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Re: Kernel panics when mounting or unmounting zfs drive

Post by jdleider » Sun Oct 14, 2012 10:12 am

Yes, this appears to happen any time the device is plugged in via usb or when the device powers back up and the OS attempts to mount it. Although, sometimes, maybe about 1/3 of the time it mounts properly.
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Re: Kernel panics when mounting or unmounting zfs drive

Post by jdleider » Sat Oct 20, 2012 12:43 pm

Any update on this?
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Re: Kernel panics when mounting or unmounting zfs drive

Post by grahamperrin » Sat Oct 20, 2012 1:26 pm

jdleider wrote:… mounted or unmounted while the OS is running … just before or just after returning from sleep mode. …


… the device powers back up and the OS attempts to mount it. …


I can't visualise the scenario(s) –sorry.

Do you mean that the file system is unmounted by you, before both the MacBook5,1 and the external drives sleep?

What makes and models are the two disks in the enclosure, and the enclosure? Maybe paste from the USB section of System Information – thanks.
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Re: Kernel panics when mounting or unmounting zfs drive

Post by jdleider » Wed Oct 24, 2012 6:17 pm

This is what happens frequently:

- The MacBook5,1 is currently running and the external filesystem is mounted and operating correctly on the MacBook5,1.
- After a period of time the drives in the external filesystem spin down
- Periodically the external drives will spin back up for some back end finder activity or something
- Every couple of times this spin up happens the MacBook5,1 experiences a kernel panic and is forced to reboot

Sometimes just plugging the external drive into the usb sockets on the MacBook5,1 is enough to induce a kernel panic

There must be something going wrong with the mounting of the zfs filesystem.
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Re: Kernel panics when mounting or unmounting zfs drive

Post by grahamperrin » Wed Oct 24, 2012 10:14 pm

Thanks – nicely described there. Hopefully the .panic file information already provided is enough for Don and colleagues to work with. Still, I'm interested to know more.

Please, what makes and models are:

  • the two disks in the enclosure
  • the enclosure
  • (if separate) the power supply to the enclosure?

(I see some USB device information in the opening post, but not enough to identify those three things.)

If all panics in this topic occur around the time of spin up of one or both of the disks in the one enclosure, then my thoughts turn to some other topics, some of which do not involve panics …
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