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

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From: "Alan Cox" <[email protected]>

Ar Gwe, 2006-10-13 am 09:50 +1000, ysgrifennodd Neil Brown:
So:  Is there any good reason to not clip the partitions to fit
within the device - and discard those that are completely beyond
the end of the device??

Its close but not quite the right approach

The patch at the end of the mail does that.  Is it OK to submit this
to mainline?

No I think not. Any partition which is partly outside the disk should be
ignored entirely, that ensures it doesn't accidentally get mounted and
trashed by an HPA or similar mixup.

This is also a risk for users who have a partition that was poorly
setup with an earlier version that allowed it to almost work. If there
is data on that partition refusing to mount it can lead to massive
data loss akin to a broken disk drive.

<<jdow>> I'd propose allowing it to mount read-only and forcing
read-only mode when attempts to mount read-write are made. That way
the user never perceives a data loss situation and can take the
appropriate steps to repair the partitioning error.

{^_^}   Joanne Dow
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