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42 lines
1.1 KiB
42 lines
1.1 KiB
From 20e114e334ed6ed3280c37a9a08fb95578393d1a Mon Sep 17 00:00:00 2001
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From: Mateusz Kusiak <mateusz.kusiak@intel.com>
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Date: Thu, 19 May 2022 09:16:08 +0200
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Subject: [PATCH 14/83] Grow: block -n on external volumes.
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Performing --raid-devices on external metadata volume should be blocked
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as it causes unwanted behaviour.
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Eg. Performing
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mdadm -G /dev/md/volume -l10 -n4
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on r0_d2 inside 4 disk container, returns
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mdadm: Need 2 spares to avoid degraded array, only have 0.
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Signed-off-by: Mateusz Kusiak <mateusz.kusiak@intel.com>
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Signed-off-by: Jes Sorensen <jsorensen@fb.com>
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---
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Grow.c | 8 ++++++++
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1 file changed, 8 insertions(+)
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diff --git a/Grow.c b/Grow.c
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index 8a242b0f..f6efbc48 100644
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--- a/Grow.c
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+++ b/Grow.c
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@@ -1892,6 +1892,14 @@ int Grow_reshape(char *devname, int fd,
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if (retval) {
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pr_err("Cannot read superblock for %s\n", devname);
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+ close(cfd);
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+ free(subarray);
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+ return 1;
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+ }
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+
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+ if (s->raiddisks && subarray) {
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+ pr_err("--raid-devices operation can be performed on a container only\n");
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+ close(cfd);
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free(subarray);
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return 1;
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}
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--
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2.38.1
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