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lv{resize,extend,reduce}: reject size change on 2-legged raid5*

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Reject size changing request in to avoid 'Bus error' and
display hint to convert to more stripes.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1784351
This commit is contained in:
Heinz Mauelshagen 2020-06-24 13:52:53 +02:00
parent 3bd9d81b29
commit 2cf0f90780
1 changed files with 7 additions and 0 deletions
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7
lib/metadata/lv_manip.c
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@ -5066,6 +5066,7 @@ static int _lvresize_check(struct logical_volume *lv,
struct lvresize_params *lp) struct lvresize_params *lp)
{ {
struct volume_group *vg = lv->vg; struct volume_group *vg = lv->vg;
struct lv_segment *seg = first_seg(lv);
if (lv_is_external_origin(lv)) { if (lv_is_external_origin(lv)) {
/* /*
@ -5089,6 +5090,12 @@ static int _lvresize_check(struct logical_volume *lv,
return 0; return 0;
} }
if (seg && seg_is_any_raid5(seg) && seg->area_count < 3) {
log_error("Cannot resize %s LV %s. Convert to more stripes first.",
lvseg_name(seg), display_lvname(lv));
return 0;
}
if (lv_is_raid(lv) && if (lv_is_raid(lv) &&
lp->resize == LV_REDUCE) { lp->resize == LV_REDUCE) {
unsigned attrs; unsigned attrs;