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lvconvert: add segtype raid5_n and conversions to/from it

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Add:
- support for segment type raid5_n (striped raid with dedicated last parity SubLVs)
- conversion support from striped/raid0/raid0_meta/raid4 to/from raid5_n
- related tests to lvconvert-raid-takeover.sh

Related: rhbz1366296
This commit is contained in:
Heinz Mauelshagen
2017-02-03 20:39:40 +01:00
parent 875ce04c61
commit 60ddd05f16
5 changed files with 259 additions and 85 deletions
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7
libdm/libdm-deptree.c
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@ -1,5 +1,5 @@
/*
* Copyright (C) 2005-2016 Red Hat, Inc. All rights reserved.
* Copyright (C) 2005-2017 Red Hat, Inc. All rights reserved.
*
* This file is part of the device-mapper userspace tools.
*
@ -47,6 +47,7 @@ enum {
SEG_RAID1,
SEG_RAID10,
SEG_RAID4,
SEG_RAID5_N,
SEG_RAID5_LA,
SEG_RAID5_RA,
SEG_RAID5_LS,
@ -81,6 +82,7 @@ static const struct {
{ SEG_RAID1, "raid1"},
{ SEG_RAID10, "raid10"},
{ SEG_RAID4, "raid4"},
{ SEG_RAID5_N, "raid5_n"},
{ SEG_RAID5_LA, "raid5_la"},
{ SEG_RAID5_RA, "raid5_ra"},
{ SEG_RAID5_LS, "raid5_ls"},
@ -2140,6 +2142,7 @@ static int _emit_areas_line(struct dm_task *dmt __attribute__((unused)),
case SEG_RAID1:
case SEG_RAID10:
case SEG_RAID4:
case SEG_RAID5_N:
case SEG_RAID5_LA:
case SEG_RAID5_RA:
case SEG_RAID5_LS:
@ -2588,6 +2591,7 @@ static int _emit_segment_line(struct dm_task *dmt, uint32_t major,
case SEG_RAID1:
case SEG_RAID10:
case SEG_RAID4:
case SEG_RAID5_N:
case SEG_RAID5_LA:
case SEG_RAID5_RA:
case SEG_RAID5_LS:
@ -3869,6 +3873,7 @@ int dm_tree_node_add_null_area(struct dm_tree_node *node, uint64_t offset)
case SEG_RAID0_META:
case SEG_RAID1:
case SEG_RAID4:
case SEG_RAID5_N:
case SEG_RAID5_LA:
case SEG_RAID5_RA:
case SEG_RAID5_LS: