Gitweb: https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=2cf0f90780bed64cb4062e... Commit: 2cf0f90780bed64cb4062eb6dfa714ed03eecfb7 Parent: 3bd9d81b29fb8ba490d87b3557861bf00047855d Author: Heinz Mauelshagen heinzm@redhat.com AuthorDate: Wed Jun 24 13:52:53 2020 +0200 Committer: Heinz Mauelshagen heinzm@redhat.com CommitterDate: Wed Jun 24 13:52:56 2020 +0200

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

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 --- lib/metadata/lv_manip.c | 7 +++++++ 1 file changed, 7 insertions(+)

diff --git a/lib/metadata/lv_manip.c b/lib/metadata/lv_manip.c index c1c86aa4c..142435bbb 100644 --- a/lib/metadata/lv_manip.c +++ b/lib/metadata/lv_manip.c @@ -5066,6 +5066,7 @@ static int _lvresize_check(struct logical_volume *lv, struct lvresize_params *lp) { struct volume_group *vg = lv->vg; + struct lv_segment *seg = first_seg(lv);

if (lv_is_external_origin(lv)) { /* @@ -5089,6 +5090,12 @@ static int _lvresize_check(struct logical_volume *lv, 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) && lp->resize == LV_REDUCE) { unsigned attrs;