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lvconvert: avoid superfluous interim raid type

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When converting striped/raid0*/raid6_n_6 <-> raid4,
avoid superfluous interim raid5_n layout.

Related: rhbz1447809
(cherry picked from commit 22a13043683a5647e8cc4e3aead911e5269ffd2f)
This commit is contained in:
Heinz Mauelshagen 2018-08-31 19:03:52 +02:00 committed by Marian Csontos
parent 3374a59250
commit 0e03c68619
1 changed files with 4 additions and 5 deletions
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9
lib/metadata/raid_manip.c
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@ -6140,7 +6140,7 @@ static int _set_convenient_raid145610_segtype_to(const struct lv_segment *seg_fr
seg_flag = SEG_RAID6_N_6;
if (segtype_is_linear(*segtype) ||
(!segtype_is_raid10(*segtype) && !segtype_is_striped(*segtype)))
(!segtype_is_raid4(*segtype) && !segtype_is_raid10(*segtype) && !segtype_is_striped(*segtype)))
seg_flag = SEG_RAID5_N;
/* raid1 -> */
@ -6209,10 +6209,9 @@ static int _set_convenient_raid145610_segtype_to(const struct lv_segment *seg_fr
lvseg_name(seg_from), display_lvname(seg_from->lv), *new_image_count);
}
/* raid4 -> !raid4/raid5* */
} else if (seg_is_raid4(seg_from) &&
!segtype_is_raid4(*segtype) && !segtype_is_any_raid5(*segtype)) {
seg_flag = SEG_RAID5_N;
/* raid4 -> * */
} else if (seg_is_raid4(seg_from) && !segtype_is_raid4(*segtype) && !segtype_is_striped(*segtype)) {
seg_flag = segtype_is_any_raid6(*segtype) ? SEG_RAID6_N_6 : SEG_RAID5_N;
/* raid6 -> striped/raid0/raid5/raid10 */
} else if (seg_is_any_raid6(seg_from)) {