On Feb 16, 2007, at 5:10 PM, Robert Hancock wrote:
Kumar Gala wrote:
I'm seeing an issue with a stock 2.6.20 kernel running on an
embedded PPC. I've got a usb flash drive plugged in and the
filesystem on the drive is vfat. Running with 64M and no swap.
If I execute a series of large (100M+) ftruncate() on the disk the
kernel will hang and never return. It seems to be stuck in the
idle loop().
On FAT filesystems this forces the entire file contents of that
size to be written out with zeros. Are you sure the kernel just
isn't busy writing out all that data to the disk?
I'm pretty sure, seeing as if I run the test it takes maybe 20-30
seconds to create the file if it succeeds. However, I've weighted 10
minutes and still no prompt.
I'm also able to break in with a HW debugger and am always in the
idle loop.
- k
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