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From 40270928ff4ac2a87825f47e53c680ffb18b5bc4 Mon Sep 17 00:00:00 2001
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From: Wang Dong <dongdwdw@linux.vnet.ibm.com>
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Date: Tue, 14 Jun 2016 12:19:40 +0200
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Subject: [PATCH 41/53] libparted/dasd: correct the offset where the first
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partition begins
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The start point of first partition must start at least from the third
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track of DASD, due to the existence of metadata in the first two track.
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The previous constraint just sets all the device to be partitioned.
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So when the start point of the first partition start before the third
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track, (For example if it starts from.0) parted will exit abruptly.
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And this kind of job must be done with constraint explicitly.
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Then the constraint is modified to exclude the first two tracks and
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to make the first partition start from the third track by default.
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Signed-off-by: Wang Dong <dongdwdw@linux.vnet.ibm.com>
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Reviewed-by: Viktor Mihajlovski <mihajlov@linux.vnet.ibm.com>
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Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
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Signed-off-by: Brian C. Lane <bcl@redhat.com>
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(cherry picked from commit 4126d0292c75cf7d50a2f4e9d485a52b5beafccc)
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---
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libparted/labels/dasd.c | 8 +++++++-
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1 file changed, 7 insertions(+), 1 deletion(-)
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diff --git a/libparted/labels/dasd.c b/libparted/labels/dasd.c
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index f79a867..4e68512 100644
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--- a/libparted/labels/dasd.c
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+++ b/libparted/labels/dasd.c
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@@ -829,6 +829,7 @@ _primary_constraint (PedDisk* disk)
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PedSector sector_size;
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LinuxSpecific* arch_specific;
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DasdDiskSpecific* disk_specific;
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+ PedSector start;
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PDEBUG;
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@@ -842,7 +843,12 @@ _primary_constraint (PedDisk* disk)
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if (!ped_alignment_init (&end_align, -1,
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disk->dev->hw_geom.sectors * sector_size))
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return NULL;
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- if (!ped_geometry_init (&max_geom, disk->dev, 0, disk->dev->length))
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+
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+ start = (FIRST_USABLE_TRK * (long long) disk->dev->hw_geom.sectors
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+ * (long long) arch_specific->real_sector_size
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+ / (long long) disk->dev->sector_size);
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+
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+ if (!ped_geometry_init (&max_geom, disk->dev, start, disk->dev->length))
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return NULL;
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return ped_constraint_new(&start_align, &end_align, &max_geom,
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--
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2.7.4
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