Add option controlling whether gpt expand expands the last partition (needs testing)
Just today I needed a version of the "gpt expand" command that doesn't extend the last partition. The attached patch adds a -x option; the last partition is only expanded if -x is specified.
I have done minimal testing:
- I successfully used it without
x after copying my laptop's data to a larger SSD, leaving plenty of space at the end for me to install DragonflyBSD on top of the two existing OSs :)
- I did a really quick test with the -x option on a hastily created vnode disk initialized with gpt init. I just verified that after expanding with -x, the Dfly partition got bigger.
I'm happy to do more testing if requested, though I'm not sure exactly what to try.
(This patch changes the default behaviour. I suppose it could be reversed, but a "don't expand the last partition option" seems a bit more convoluted conceptually.)
Patch is vs. commit 42a874b478.
Updated by falsifian over 1 year ago
It looks like the new GPT partition table doesn't cover the whole disk. E.g. the the "Usable LBA" reported by OpenBSD's fdisk showed the old disk's size.
I was able to fix it by running parted on Linux. It noticed the problem and offered to fix it automatically.
I don't know if this was already a problem with Dfly's gpt or if my patch introduces the problem.