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o Contiguous allocation

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This commit is contained in:
Joe Thornber 2001-11-06 10:55:01 +00:00
parent dd4e3f9efc
commit ed0502e98b
1 changed files with 40 additions and 2 deletions
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42
lib/metadata/lv_manip.c
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@ -50,12 +50,50 @@ static int _alloc_striped(struct logical_volume *lv, struct list *pvms)
return 0;
}
/*
* Only one area per pv is allowed, so we search
* for the biggest area, or the first area that
* can complete the allocation.
*/
static int _alloc_contiguous(struct logical_volume *lv, struct list *pvms)
{
log_err("contiguous allocation not implemented yet.");
return 0;
struct list *tmp1, *tmp2;
struct pv_map *pvm;
struct pv_area *pva, *biggest;
uint32_t allocated = 0;
list_iterate (tmp1, pvms) {
pvm = list_item(tmp1, struct pv_map);
biggest = NULL;
list_iterate (tmp2, &pvm->areas) {
pva = list_item(tmp2, struct pv_area);
if (!biggest || (pva->count > biggest->count))
biggest = pva;
if (biggest->count >= (lv->le_count - allocated))
break;
}
allocated += _alloc_area(lv, allocated, pvm->pv, pva);
if (allocated == lv->le_count)
break;
}
if (allocated != lv->le_count) {
log_err("insufficient free extents to "
"allocate logical volume");
return 0;
}
return 1;
}
/*
* Areas just get allocated in order until the lv
* is full.
*/
static int _alloc_simple(struct logical_volume *lv, struct list *pvms)
{
struct list *tmp1, *tmp2;