Re: Why aren't partitions limited to fit within the device?

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On Oct 15, 2006, at 20:08:50, Neil Brown wrote:
Hmmm.. So Alan things a partially-outside-this-disk partition
shouldn't show up at all, and Andries thinks it should.
And both give reasonably believable justifications.

Maybe we need a kernel parameter?  How about this?

[...snip...]
So provide a kernel-parameter which a 'safe' default.

   partitions=strict
is the default
   partitions=relaxed
means that partitions are clipped rather than rejected.
This kernel parameters only applies to auto-detected partitions,
not those set by ioctl.

Perhaps it should also support partitions=none; so that those of us who want to use a small userspace program and device-mapper to do the partition discovery and access may do so without worrying about how the kernel perceives the partitions (if at all). It also makes it fairly trivial to add support for entirely new parition types without having to modify the kernel at all.

Cheers,
Kyle Moffett
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