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Fix lvreduce pv extents calculations.

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This commit is contained in:
Alasdair Kergon 2004-03-19 16:19:41 +00:00
parent c9f25410c9
commit 68df28296d
1 changed files with 11 additions and 0 deletions
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11
lib/metadata/lv_manip.c
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@ -595,6 +595,7 @@ int lv_reduce(struct format_instance *fi,
struct list *segh;
struct lv_segment *seg;
uint32_t count = extents;
int striped;
for (segh = lv->segments.p;
(segh != &lv->segments) && count; segh = segh->p) {
@ -609,6 +610,16 @@ int lv_reduce(struct format_instance *fi,
/* reduce this segment */
_put_extents(seg);
seg->len -= count;
striped = (seg->type == SEG_STRIPED);
/* Caller must ensure exact divisibility */
if (striped && (count % seg->area_count)) {
log_error("Segment extent reduction %" PRIu32
"not divisible by #stripes %" PRIu32,
count, seg->area_count);
return 0;
}
seg->area_len -=
count / (striped ? seg->area_count : 1);
_get_extents(seg);
count = 0;
}