Blame SOURCES/lvm2-2_02_187-raid-disallow-reshape-of-stacked-LVs.patch

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 WHATS_NEW                 | 1 +
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 lib/metadata/raid_manip.c | 6 ++++++
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 2 files changed, 7 insertions(+)
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diff --git a/WHATS_NEW b/WHATS_NEW
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index ac70074..01d0bc6 100644
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--- a/WHATS_NEW
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+++ b/WHATS_NEW
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@@ -1,5 +1,6 @@
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 Version 2.02.187 - 
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 ===================================
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+  Prevent raid reshaping of stacked volumes.
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   Fix lvmetad shutdown and avoid lenghty timeouts when rebooting system.
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   Prevent creating VGs with PVs with different logical block sizes.
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   Pvmove runs in exlusively activating mode for exclusively active LVs.
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diff --git a/lib/metadata/raid_manip.c b/lib/metadata/raid_manip.c
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index bffae60..768f261 100644
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--- a/lib/metadata/raid_manip.c
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+++ b/lib/metadata/raid_manip.c
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@@ -6445,6 +6445,12 @@ int lv_raid_convert(struct logical_volume *lv,
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 	uint32_t available_slvs, removed_slvs;
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 	takeover_fn_t takeover_fn;
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+	/* FIXME Can't reshape volume in use - aka not toplevel devices */
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+	if (!dm_list_empty(&lv->segs_using_this_lv)) {
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+		log_error("Can't reshape stacked volume %s.", display_lvname(lv));
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+		return 0;
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+	}
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+
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 	/* FIXME If not active, prompt and activate */
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 	/* FIXME Some operations do not require the LV to be active */
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 	/* LV must be active to perform raid conversion operations */