An incident this morning around 08:00.
In the .panic file at
http://www.wuala.com/grahamperrin/public/2013/03/29/b/ the
BSD process name corresponding to current thread:
- is not kernel_task
- is cookied
– but I reckon that it belongs under this
kernel_task kernel panic topic. There was a comparable panic in January. In both incidents the running apps included Safari and a VirtualBoxVM.
This morning: one VirtualBoxVM running Windows 7 with 1536 MB memory, another VirtualBoxVM running Ubuntu with 1024 MB memory. If I recall correctly, the panic occurred shortly after a restart of Ubuntu. Amongst the messages that were logged in the five minutes before the panic:
- Code: Select all
2013-03-29 07:55:04.000 kernel[0]: aio_queue_async_request(): too many in flight for proc: 16.
2013-03-29 07:57:41.000 kernel[0]: aio_queue_async_request(): too many in flight for proc: 16.
StoreJet Transcend TS640GSJ25M2 (similar to the
25M2 range, but a different capacity).
Until yesterday, my habit was to connect the StoreJet to the MacBookPro5,2. This morning's incident was different:
Also unusual this morning: whilst each VirtualBoxVM ran, I throttled its processor from 100% to 40%.
Of all my topics, this is the only one where I'd like either a resolution, or an authoritative explanation for the kernel panics.
PostscriptFor the record, I don't use the USB Y-cable originally supplied with the drive. It was discarded or set aside after unexpected disconnections made me suspect an issue with the cable.
From the web page for the 25M2:
StoreJet external hard drives are powered directly via your computer’s USB port. However, some computers may not be able to supply enough power by using just one USB port. If your StoreJet drive does not function properly, connect both ends of the USB Y-cable to two USB ports on your computer to ensure the StoreJet drive receives sufficient power. Please also avoid using a USB HUB when connecting the StoreJet drive to your computer to avoid the possibility of insufficient power supply.
I use a standard cable (not Y-), connected to just one port. The hub is powered. I believe that the drive functions properly with the given power.