lvm2/0006-lvreduce-make-_lvseg_get_stripes-handle-integrity-la.patch

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From 7702262444a5af924d0fc94ff956663aab3505df Mon Sep 17 00:00:00 2001
From: David Teigland <teigland@redhat.com>
Date: Tue, 2 May 2023 16:12:23 -0500
Subject: [PATCH 6/8] lvreduce: make _lvseg_get_stripes handle integrity layer
lvreduce uses _lvseg_get_stripes() which was unable to get raid stripe
info with an integrity layer present. This caused lvreduce on a
raid+integrity LV to fail prematurely when checking stripe parameters.
An unhelpful error message about stripe size would be printed.
(cherry picked from commit 368381fd4022dc99ffe551b30ed75c3ddbc5c5c8)
---
lib/metadata/lv_manip.c | 35 ++++++++++++++++++++++++++---------
1 file changed, 26 insertions(+), 9 deletions(-)
diff --git a/lib/metadata/lv_manip.c b/lib/metadata/lv_manip.c
index 2a4e0e88a..add9512ff 100644
--- a/lib/metadata/lv_manip.c
+++ b/lib/metadata/lv_manip.c
@@ -5144,22 +5144,39 @@ int lv_extend_policy_calculate_percent(struct logical_volume *lv,
static uint32_t _lvseg_get_stripes(struct lv_segment *seg, uint32_t *stripesize)
{
- uint32_t s;
- struct lv_segment *seg_mirr;
+ uint32_t s, a;
+ struct lv_segment *seg_get, *seg_image, *seg_iorig;
+ struct logical_volume *lv_image, *lv_iorig;
/* If segment mirrored, check if images are striped */
- if (seg_is_mirrored(seg))
+ if (seg_is_mirrored(seg)) {
for (s = 0; s < seg->area_count; s++) {
if (seg_type(seg, s) != AREA_LV)
continue;
- seg_mirr = first_seg(seg_lv(seg, s));
- if (seg_is_striped(seg_mirr)) {
- seg = seg_mirr;
+ lv_image = seg_lv(seg, s);
+ seg_image = first_seg(lv_image);
+ seg_get = NULL;
+
+ if (seg_is_integrity(seg_image)) {
+ /* Get stripe values from the iorig layer. */
+ for (a = 0; a < seg_image->area_count; a++) {
+ lv_iorig = seg_lv(seg_image, a);
+ seg_iorig = first_seg(lv_iorig);
+ seg_get = seg_iorig;
+ break;
+ }
+ } else {
+ /* Get stripe values from the image layer. */
+ seg_get = seg_image;
+ }
+
+ if (seg_get && seg_is_striped(seg_get)) {
+ seg = seg_get;
break;
}
}
-
+ }
if (seg_is_striped(seg)) {
*stripesize = seg->stripe_size;
@@ -5168,7 +5185,7 @@ static uint32_t _lvseg_get_stripes(struct lv_segment *seg, uint32_t *stripesize)
if (seg_is_raid(seg)) {
*stripesize = seg->stripe_size;
- return _raid_stripes_count(seg);
+ return _raid_stripes_count(seg);
}
*stripesize = 0;
@@ -5593,7 +5610,7 @@ static int _lvresize_adjust_extents(struct logical_volume *lv,
seg_size /= seg_mirrors;
lp->extents = logical_extents_used + seg_size;
break;
- }
+ }
} else if (new_extents <= logical_extents_used + seg_logical_extents) {
seg_size = new_extents - logical_extents_used;
lp->extents = new_extents;
--
2.40.1