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46 lines
1.6 KiB
46 lines
1.6 KiB
1 year ago
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From d07e561810a2e33b667a8a9476edaff42eb119b9 Mon Sep 17 00:00:00 2001
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From: Heming Zhao <heming.zhao@suse.com>
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Date: Thu, 23 Feb 2023 22:39:39 +0800
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Subject: [PATCH 085/125] Grow: fix can't change bitmap type from none to
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clustered.
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Commit a042210648ed ("disallow create or grow clustered bitmap with
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writemostly set") introduced this bug. We should use 'true' logic not
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'== 0' to deny setting up clustered array under WRITEMOSTLY condition.
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How to trigger
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```
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~/mdadm # ./mdadm -Ss && ./mdadm --zero-superblock /dev/sd{a,b}
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~/mdadm # ./mdadm -C /dev/md0 -l mirror -b clustered -e 1.2 -n 2 \
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/dev/sda /dev/sdb --assume-clean
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mdadm: array /dev/md0 started.
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~/mdadm # ./mdadm --grow /dev/md0 --bitmap=none
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~/mdadm # ./mdadm --grow /dev/md0 --bitmap=clustered
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mdadm: /dev/md0 disks marked write-mostly are not supported with clustered bitmap
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```
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Signed-off-by: Heming Zhao <heming.zhao@suse.com>
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Acked-by: Coly Li <colyli@suse.de>
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Signed-off-by: Jes Sorensen <jes@trained-monkey.org>
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---
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Grow.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/Grow.c b/Grow.c
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index 8f5cf07d..bb5fe45c 100644
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--- a/Grow.c
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+++ b/Grow.c
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@@ -429,7 +429,7 @@ int Grow_addbitmap(char *devname, int fd, struct context *c, struct shape *s)
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dv = map_dev(disk.major, disk.minor, 1);
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if (!dv)
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continue;
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- if (((disk.state & (1 << MD_DISK_WRITEMOSTLY)) == 0) &&
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+ if ((disk.state & (1 << MD_DISK_WRITEMOSTLY)) &&
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(strcmp(s->bitmap_file, "clustered") == 0)) {
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pr_err("%s disks marked write-mostly are not supported with clustered bitmap\n",devname);
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free(mdi);
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--
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2.38.1
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