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Code Releases Activity

stripes: Introduce _round_to_stripe_boundary.

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This commit is contained in:
Alasdair G Kergon 2015-09-24 17:50:53 +01:00
parent 39a97d86f0
commit e773e71910
1 changed files with 22 additions and 7 deletions
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29
lib/metadata/lv_manip.c
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@ -941,6 +941,26 @@ dm_percent_t copy_percent(const struct logical_volume *lv)
return denominator ? dm_make_percent(numerator, denominator) : 100.0;
}
/* Round up extents to next stripe boundary for number of stripes */
static uint32_t _round_to_stripe_boundary(struct volume_group *vg, uint32_t extents,
uint32_t stripes, int extend)
{
uint32_t size_rest, new_extents = extents;
if (!stripes)
return extents;
/* Round up extents to stripe divisible amount */
if ((size_rest = extents % stripes)) {
new_extents += extend ? stripes - size_rest : -size_rest;
log_print_unless_silent("Rounding size %s (%d extents) up to stripe boundary size %s (%d extents).",
display_size(vg->cmd, extents * vg->extent_size), extents,
display_size(vg->cmd, new_extents * vg->extent_size), new_extents);
}
return new_extents;
}
/*
* All lv_segments get created here.
*/
@ -6933,7 +6953,7 @@ static struct logical_volume *_lv_create_an_lv(struct volume_group *vg,
const char *new_lv_name)
{
struct cmd_context *cmd = vg->cmd;
uint32_t size_rest, size;
uint32_t size;
uint64_t status = lp->permission | VISIBLE_LV;
const struct segment_type *create_segtype = lp->segtype;
struct logical_volume *lv, *origin_lv = NULL;
@ -6998,12 +7018,7 @@ static struct logical_volume *_lv_create_an_lv(struct volume_group *vg,
lp->stripe_size = vg->extent_size;
}
if ((size_rest = lp->extents % lp->stripes)) {
log_print_unless_silent("Rounding size (%d extents) up to stripe boundary "
"size (%d extents).", lp->extents,
lp->extents - size_rest + lp->stripes);
lp->extents = lp->extents - size_rest + lp->stripes;
}
lp->extents = _round_to_stripe_boundary(vg, lp->extents, lp->stripes, 1);
if (!lp->extents && !seg_is_thin_volume(lp)) {
log_error(INTERNAL_ERROR "Unable to create new logical volume with no extents.");