revert-reshape: only impose reshape_position tests on raid[456]
This test is irrelevant for RAID10, so restrict it to those levels in which it is meaningful. Signed-off-by: NeilBrown <neilb@suse.de>
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5
super0.c
5
super0.c
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@ -650,14 +650,15 @@ static int update_super0(struct supertype *st, struct mdinfo *info,
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pr_err("No active reshape to revert on %s\n",
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devname);
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else if (sb->delta_disks == 0)
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pr_err("%s: Can on revert reshape which changes number of devices\n",
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pr_err("%s: Can only revert reshape which changes number of devices\n",
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devname);
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else {
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int tmp;
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int parity = sb->level == 6 ? 2 : 1;
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rv = 0;
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if (sb->reshape_position % (
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if (sb->level >= 4 && sb->level <= 6 &&
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sb->reshape_position % (
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sb->new_chunk/512 *
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(sb->raid_disks - sb->delta_disks - parity))) {
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pr_err("Reshape position is not suitably aligned.\n");
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19
super1.c
19
super1.c
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@ -1276,14 +1276,17 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
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* So we reject a revert-reshape unless the
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* alignment is good.
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*/
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reshape_sectors = __le64_to_cpu(sb->reshape_position);
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reshape_chunk = __le32_to_cpu(sb->new_chunk);
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reshape_chunk *= __le32_to_cpu(sb->raid_disks) - __le32_to_cpu(sb->delta_disks) -
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(__le32_to_cpu(sb->level)==6 ? 2 : 1);
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if (reshape_sectors % reshape_chunk) {
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pr_err("Reshape position is not suitably aligned.\n");
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pr_err("Try normal assembly as stop again\n");
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return -2;
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if (__le32_to_cpu(sb->level) >= 4 &&
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__le32_to_cpu(sb->level) <= 6) {
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reshape_sectors = __le64_to_cpu(sb->reshape_position);
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reshape_chunk = __le32_to_cpu(sb->new_chunk);
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reshape_chunk *= __le32_to_cpu(sb->raid_disks) - __le32_to_cpu(sb->delta_disks) -
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(__le32_to_cpu(sb->level)==6 ? 2 : 1);
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if (reshape_sectors % reshape_chunk) {
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pr_err("Reshape position is not suitably aligned.\n");
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pr_err("Try normal assembly as stop again\n");
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return -2;
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}
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}
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sb->raid_disks = __cpu_to_le32(__le32_to_cpu(sb->raid_disks) -
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__le32_to_cpu(sb->delta_disks));
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