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From 07f2604aeeb20d187e7243007fc5ab1a0560a4b7 Mon Sep 17 00:00:00 2001
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From: "Brian C. Lane" <bcl@redhat.com>
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Date: Wed, 4 Feb 2015 16:46:07 -0800
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Subject: [PATCH 32/32] libparted: device mapper uses 512b sectors (#1188431)
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device mapper doesn't use the device's sector size when creating a
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table. It always uses 512b units. This causes partitions to be created
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8x smaller than expected on devices with 4906b sectors.
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Resolves: rhbz#1188431
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---
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libparted/arch/linux.c | 7 +++++--
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1 file changed, 5 insertions(+), 2 deletions(-)
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diff --git a/libparted/arch/linux.c b/libparted/arch/linux.c
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index 788cdc3..1d11f58 100644
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--- a/libparted/arch/linux.c
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+++ b/libparted/arch/linux.c
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@@ -2849,8 +2849,10 @@ _dm_add_partition (PedDisk* disk, PedPartition* part)
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dm_task_destroy (task);
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task = NULL;
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+ /* device-mapper uses 512b units, not the device's sector size */
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if ( ! (params = zasprintf ("%d:%d %lld", arch_specific->major,
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- arch_specific->minor, part->geom.start)))
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+ arch_specific->minor,
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+ part->geom.start * (disk->dev->sector_size / PED_SECTOR_SIZE_DEFAULT))))
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goto err;
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task = dm_task_create (DM_DEVICE_CREATE);
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@@ -2860,7 +2862,8 @@ _dm_add_partition (PedDisk* disk, PedPartition* part)
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dm_task_set_name (task, vol_name);
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if (vol_uuid)
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dm_task_set_uuid (task, vol_uuid);
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- dm_task_add_target (task, 0, part->geom.length,
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+ /* device-mapper uses 512b units, not the device's sector size */
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+ dm_task_add_target (task, 0, part->geom.length * (disk->dev->sector_size / PED_SECTOR_SIZE_DEFAULT),
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"linear", params);
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if (!dm_task_set_cookie(task, &cookie, 0))
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goto err;
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--
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2.1.0
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