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Fix up analysis of reshape from RAID1 to RAID5. 

Need to allow raid-disks to change at the same time.

NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2011-01-21 09:13:44 +11:00
parent e7a71c6b77
commit 446d2a5ad4
1 changed files with 4 additions and 6 deletions
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10
Grow.c
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@ -928,14 +928,12 @@ char *analyse_change(struct mdinfo *info, struct reshape *re)
return NULL; return NULL;
} }
if (info->array.raid_disks == 2 && if (info->array.raid_disks == 2 &&
info->array.raid_disks == 5) { info->new_level == 5) {
/* simple in-place conversion */
re->level = 5; re->level = 5;
re->parity = 1;
re->before.data_disks = 1; re->before.data_disks = 1;
re->before.layout = ALGORITHM_LEFT_SYMMETRIC; re->before.layout = ALGORITHM_LEFT_SYMMETRIC;
re->backup_blocks = 0; info->array.chunk_size = 65536;
return NULL; break;
} }
/* Could do some multi-stage conversions, but leave that to /* Could do some multi-stage conversions, but leave that to
* later. * later.
@ -1224,7 +1222,7 @@ char *analyse_change(struct mdinfo *info, struct reshape *re)
return NULL; return NULL;
} }
if (re->after.data_disks == 1 && re->before.data_disks == 1) { if (re->after.data_disks == 1 && re->before.data_disks == 1) {
/* chunks can layout changes make no difference */ /* chunk and layout changes make no difference */
re->backup_blocks = 0; re->backup_blocks = 0;
return NULL; return NULL;
} }