59 lines
1.9 KiB
Diff
59 lines
1.9 KiB
Diff
From 169430559462d162c6e44157f97126a1e75f1aed Mon Sep 17 00:00:00 2001
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From: Peter Rajnoha <prajnoha@redhat.com>
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Date: Thu, 3 Oct 2024 09:38:11 +0200
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Subject: [PATCH] dev-type: detect mixed dos partition with gpt's PMBR
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Detect when we have mixed dos partition with gpt's PMBR partition.
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This is not a sane configuration, but detect it anyway, just in case
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someone configures such partition layout manually and forcefully and
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incorrectly defines one of the partition types to be the GPT's PMBR.
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For example:
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❯ fdisk -l /dev/sdc
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Device Boot Start End Sectors Size Id Type
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/dev/sdc1 2048 67583 65536 32M 83 Linux
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/dev/sdc2 67584 262143 194560 95M ee GPT
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Before:
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(The partition filter passes even though there's real existing dos
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partition - the empty GPT PMBR overrides it.)
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❯ pvcreate /dev/sdc
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WARNING: PMBR signature detected on /dev/sdc at offset 510. Wipe it? [y/n]:
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Wiping PMBR signature on /dev/sdc.
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Physical volume "/dev/sdc" successfully created.
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With this patch applied:
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(The GPT PMBR does not override the existence of the dos partition.)
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❯ pvcreate /dev/sdc
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Cannot use /dev/sdc: device is partitioned
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(cherry picked from commit 317fae4024d9a2a114cf30496500501bdf41ba20)
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---
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lib/device/dev-type.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/lib/device/dev-type.c b/lib/device/dev-type.c
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index e89ed82c8..e3504e2b7 100644
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--- a/lib/device/dev-type.c
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+++ b/lib/device/dev-type.c
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@@ -663,7 +663,7 @@ static int _has_partition_table(struct device *dev)
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* If this is GPT's PMBR, then also
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* check for gpt partition table.
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*/
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- if (buf.part[p].sys_ind == PART_MSDOS_TYPE_GPT_PMBR)
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+ if (buf.part[p].sys_ind == PART_MSDOS_TYPE_GPT_PMBR && !ret)
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ret = _has_gpt_partition_table(dev);
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else
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ret = 1;
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--
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2.46.2
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