ZEVO Community Edition 1.1.1 on OS X 10.8.2, MacBookPro5,2 with 8 GB memory and one USB device alone for a single pool (dataset with one child).
Repeatedly in Console:
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… kernel[0]: still waiting on znode 15740167 (0xffffff81792fab00) REG ZIL
GUIs, including the Force Quit Applications window of loginwindow, were unresponsive. I keyed the chord for sysdiagnose but before it completed, a kernel panic.
FWIW before the panic I recall attempting
gpt show …
or
gpt show -l
for at least that one USB device, which I thought was recently ejected, but eventually I realised it was present in Finder.
AFAIR I used Finder to eject/unmount both file systems. Initially those actions seemed to succeed (both disappeared from Finder) but the system began feeling sluggish in an I/O way and sure enough I observed strings of peculiarities in Console.
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panic(cpu 0 caller 0xffffff8012cb7bd5): Kernel trap at 0xffffff8013088d4f, type 14=page fault, registers:
CR0: 0x000000008001003b, CR2: 0x00000000000000e8, CR3: 0x0000000020c54000, CR4: 0x0000000000000660
RAX: 0x0000000000000003, RBX: 0x0000000000000001, RCX: 0xffffff7f9341aa3f, RDX: 0xffffff8024bd8000
RSP: 0xffffff80fddcbec0, RBP: 0xffffff80fddcbef0, RSI: 0x0000000000000000, RDI: 0xffffff8031c1b260
R8: 0x0000000000000001, R9: 0x0000000000000000, R10: 0x0000000000000001, R11: 0x0000000000000000
R12: 0x0000000000000000, R13: 0xffffff80132e1f58, R14: 0x0000000000000000, R15: 0xffffff8028859e60
RFL: 0x0000000000010286, RIP: 0xffffff8013088d4f, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0x00000000000000e8, Error code: 0x0000000000000000, Fault CPU: 0x0
Backtrace (CPU 0), Frame : Return Address
0xffffff80fddcbb60 : 0xffffff8012c1d626
0xffffff80fddcbbd0 : 0xffffff8012cb7bd5
0xffffff80fddcbda0 : 0xffffff8012cce4ed
0xffffff80fddcbdc0 : 0xffffff8013088d4f
0xffffff80fddcbef0 : 0xffffff8012d04e10
0xffffff80fddcbf50 : 0xffffff8012fe182a
0xffffff80fddcbfb0 : 0xffffff8012cced33
BSD process name corresponding to current thread: mds
Boot args: -v
Mac OS version:
12C54
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: 0x0000000012a00000
Kernel text base: 0xffffff8012c00000
System model name: MacBookPro5,2 (Mac-F2268EC8)
System uptime in nanoseconds: 27106633911957
last loaded kext at 15103583380236: com.apple.driver.AppleBluetoothMultitouch 75.15 (addr 0xffffff7f951fc000, size 73728)
last unloaded kext at 27039917029456: com.apple.iokit.IOUSBMassStorageClass 3.5.0 (addr 0xffffff7f93d68000, size 69632)
For the .panic file in full, and other files (to follow maybe later today): http://www.wuala.com/grahamperrin/public/2012/10/04/a/