On 11/18/11 17:09, nev...@tx.net wrote:
If you are performating a manual partion in 9.0-RC2 bsdinstall and you
delete any created partition except the most recently created one, the
total remaining space will be miscalculated. Reproducable as shown
below.
Workaround: if you delete a partition that is not the last partition
that was created, delete all partitions created after that partition
before continuing. Order does not seem to be important.
The results are similar with other hard drive sizes, with the i386 or
amd64 distributions, and with either 9.0-RC2 or 9.0-RC1 (I did not go
back and check install discs prior to RC1)
Reproducing the miscount:
A 114 GB drive is used for this example:
Select Manual Partitioning
Perform the first Create on the drive and select GPT
Creating the first partition: "Add Partition" "size" shows 114GB
Change size to 4GB, set mountpoint to / and tab to OK
(agree to the boot partition creation)
Create a second partition: "Add Partition" "size" shows 110GB
Adjust size to 10GB, set mountpoint to /usr and tab to OK
Create a third partition: "Add Partition" "size" shows 100GB
Adjust size to 20GB, set mountpoint to /var, and tab to OK
Create a 4th partition: "size" shows 80GB remaining
Adjust size to 40GB, set mountpoint to /data, and tab to OK.
There is 40 GB remaining on the drive. Now change the size of /var.
First, delete the currently configured /var partition.
In the Partition Editor, adding up all the lines on the screen shows
54GB (plus a 64K boot) as allocated, so there should now be 60GB
remaining. But the deleted /var space has not been added back into
the total.
Select Create again: "Add Partition" "size" shows 40GB
Adjust size to 30GB, set mountpoint as /var, tab to OK
A subsequent "Create" will show that 20GB is remaining, rather than
the actual remaining 30GB. Selecting any size 20GB or larger for
/home will give you a 20GB partition, and then an additional create
will show the 10GB.
This isn't a bug. The partitions are laid out on disk already, and,
because you deleted one in the middle, the largest *contiguous* block of
free space is 20GB, which is what is shown and the maximum it is
possible to create. That's why you can make one 20 GB partition and one
10 GB partition, but not a single 30 GB one.
-Nathan
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