| /* |
| * Copyright (C) 2016 Red Hat, Inc. All rights reserved. |
| * |
| * This file is part of LVM2. |
| * |
| * This copyrighted material is made available to anyone wishing to use, |
| * modify, copy, or redistribute it subject to the terms and conditions |
| * of the GNU Lesser General Public License v.2.1. |
| * |
| * You should have received a copy of the GNU Lesser General Public License |
| * along with this program; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #define N _takeover_noop |
| #define X _takeover_unsupported |
| |
| #define lin_r0 _takeover_from_linear_to_raid0 |
| #define lin_r0 _takeover_from_linear_to_raid0 |
| #define lin_r1 _takeover_from_linear_to_raid1 |
| #define lin_r10 _takeover_from_linear_to_raid10 |
| #define lin_r45 _takeover_from_linear_to_raid45 |
| #define mir_r0 _takeover_from_mirrored_to_raid0 |
| #define mir_r0m _takeover_from_mirrored_to_raid0_meta |
| #define mir_r1 _takeover_from_mirrored_to_raid1 |
| #define mir_r10 _takeover_from_mirrored_to_raid10 |
| #define mir_r45 _takeover_from_mirrored_to_raid45 |
| #define r01_r01 _takeover_from_raid01_to_raid01 |
| #define r01_r10 _takeover_from_raid01_to_raid10 |
| #define r01_str _takeover_from_raid01_to_striped |
| #define r0__lin _takeover_from_raid0_to_linear |
| #define r0__mir _takeover_from_raid0_to_mirrored |
| #define r0m_lin _takeover_from_raid0_meta_to_linear |
| #define r0m_mir _takeover_from_raid0_meta_to_mirrored |
| #define r0m_r0 _takeover_from_raid0_meta_to_raid0 |
| #define r0m_r1 _takeover_from_raid0_meta_to_raid1 |
| #define r0m_r10 _takeover_from_raid0_meta_to_raid10 |
| #define r0m_r45 _takeover_from_raid0_meta_to_raid45 |
| #define r0m_r6 _takeover_from_raid0_meta_to_raid6 |
| #define r0m_str _takeover_from_raid0_meta_to_striped |
| #define r0__r0m _takeover_from_raid0_to_raid0_meta |
| #define r0__r1 _takeover_from_raid0_to_raid1 |
| #define r0__r10 _takeover_from_raid0_to_raid10 |
| #define r0__r45 _takeover_from_raid0_to_raid45 |
| #define r0__r6 _takeover_from_raid0_to_raid6 |
| #define r0__str _takeover_from_raid0_to_striped |
| #define r10_lin _takeover_from_raid10_to_linear |
| #define r10_mir _takeover_from_raid10_to_mirrored |
| #define r10_r0 _takeover_from_raid10_to_raid0 |
| #define r10_r01 _takeover_from_raid10_to_raid01 |
| #define r10_r0m _takeover_from_raid10_to_raid0_meta |
| #define r10_r1 _takeover_from_raid10_to_raid1 |
| #define r10_r10 _takeover_from_raid10_to_raid10 |
| #define r10_str _takeover_from_raid10_to_striped |
| #define r1__lin _takeover_from_raid1_to_linear |
| #define r1__mir _takeover_from_raid1_to_mirrored |
| #define r1__r0 _takeover_from_raid1_to_raid0 |
| #define r1__r0m _takeover_from_raid1_to_raid0_meta |
| #define r1__r1 _takeover_from_raid1_to_raid1 |
| #define r1__r10 _takeover_from_raid1_to_raid10 |
| #define r1__r45 _takeover_from_raid1_to_raid45 |
| #define r1__str _takeover_from_raid1_to_striped |
| #define r45_lin _takeover_from_raid45_to_linear |
| #define r45_mir _takeover_from_raid45_to_mirrored |
| #define r45_r0 _takeover_from_raid45_to_raid0 |
| #define r45_r0m _takeover_from_raid45_to_raid0_meta |
| #define r45_r1 _takeover_from_raid45_to_raid1 |
| #define r45_r54 _takeover_from_raid45_to_raid54 |
| #define r45_r6 _takeover_from_raid45_to_raid6 |
| #define r45_str _takeover_from_raid45_to_striped |
| #define r6__r0 _takeover_from_raid6_to_raid0 |
| #define r6__r0m _takeover_from_raid6_to_raid0_meta |
| #define r6__r45 _takeover_from_raid6_to_raid45 |
| #define r6__str _takeover_from_raid6_to_striped |
| #define str_r0 _takeover_from_striped_to_raid0 |
| #define str_r01 _takeover_from_striped_to_raid01 |
| #define str_r0m _takeover_from_striped_to_raid0_meta |
| #define str_r10 _takeover_from_striped_to_raid10 |
| #define str_r45 _takeover_from_striped_to_raid45 |
| #define str_r6 _takeover_from_striped_to_raid6 |
| |
| static uint64_t _segtype_index[] = { |
| 1, /* linear */ |
| 1, /* striped */ |
| SEG_MIRROR, |
| SEG_RAID0, |
| SEG_RAID0_META, |
| SEG_RAID1, |
| SEG_RAID4 | SEG_RAID5_LS | SEG_RAID5_LA | SEG_RAID5_LS | SEG_RAID5_RS | SEG_RAID5_RA | SEG_RAID5_N, |
| SEG_RAID6_LS_6 | SEG_RAID6_LA_6 | SEG_RAID6_RS_6 | SEG_RAID6_RA_6 | SEG_RAID6_NC | SEG_RAID6_NR | SEG_RAID6_ZR | SEG_RAID6_N_6, |
| 0, // SEG_RAID10_NEAR | SEG_RAID10_FAR | SEG_RAID10_OFFSET, |
| 0, // SEG_RAID01, |
| 0 |
| }; |
| |
| /* |
| * Matrix of takeover functions. |
| * Row corresponds to original segment type. |
| * Column corresponds to new segment type. |
| * N represents a combination that has no effect (no-op). |
| * X represents a combination that is unsupported. |
| */ |
| static takeover_fn_t _takeover_fns[][11] = { |
| /* from, to -> linear striped mirror raid0 raid0_meta raid1 raid4/5 raid6 raid10 raid01 other*/ |
| /* | */ |
| /* v */ |
| /* linear */ { N , X , X , lin_r0, lin_r0 , lin_r1, lin_r45, X , lin_r10, X , X }, |
| /* striped */ { X , N , X , str_r0, str_r0m, lin_r1, str_r45, str_r6, str_r10, str_r01, X }, |
| /* mirror */ { X , X , N , mir_r0, mir_r0m, mir_r1, mir_r45, X , mir_r10, X , X }, |
| /* raid0 */ { r0__lin, r0__str, r0__mir, N , r0__r0m, r0__r1, r0__r45, r0__r6, r0__r10, X , X }, |
| /* raid0_meta */ { r0m_lin, r0m_str, r0m_mir, r0m_r0, N , r0m_r1, r0m_r45, r0m_r6, r0m_r10, X , X }, |
| /* raid1 */ { r1__lin, r1__str, r1__mir, r1__r0, r1__r0m, r1__r1, r1__r45, X , r1__r10, X , X }, |
| /* raid4/5 */ { r45_lin, r45_str, r45_mir, r45_r0, r45_r0m, r45_r1, r45_r54, r45_r6, X , X , X }, |
| /* raid6 */ { X , r6__str, X , r6__r0, r6__r0m, X , r6__r45, X , X , X , X }, |
| /* raid10 */ // { r10_lin, r10_str, r10_mir, r10_r0, r10_r0m, r10_r1, X , X , r10_r10, r10_r01, X }, |
| /* raid01 */ // { X , r01_str, X , X , X , X , X , X , r01_r10, r01_r01, X }, |
| /* other */ { X , X , X , X , X , X , X , X , X , X , X }, |
| }; |
| #undef X |
| #undef N |
