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Fix alignment of 'last' in autofill.

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'last' is the sector number of the last usable sector. Sector
numbers start with 0. As such, 'last' is always 1 less than
the count of sectors and aligning 'last' down as-is means that
the number of free sectors is pessimized by 'alignment - 1' if
the number of usable sectors was already a multiple of the
alignment. Consequently, gpart(8) failed to create a partition
when the alignment and size were such that it would extend to
the end of the disk.
This commit is contained in:
Marcel Moolenaar 2017-10-06 16:38:00 +00:00
parent 845ed71645
commit b5dc98c049
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=324369
1 changed files with 1 additions and 1 deletions
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2
sbin/geom/class/part/geom_part.c
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@ -547,7 +547,7 @@ gpart_autofill(struct gctl_req *req)
last = (off_t)strtoimax(s, NULL, 0);
grade = ~0ULL;
a_first = ALIGNUP(first + offset, alignment);
last = ALIGNDOWN(last + offset, alignment);
last = ALIGNDOWN(last + offset + 1, alignment) - 1;
if (a_first < start)
a_first = start;
while ((pp = find_provider(gp, first)) != NULL) {