Commit 2d92a3c2 authored by Heinz Mauelshagen's avatar Heinz Mauelshagen Committed by Mike Snitzer
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dm raid: prohibit 'nosync' on new raid6 and reject resize during reshape

Signed-off-by: default avatarHeinz Mauelshagen <>
Signed-off-by: default avatarMike Snitzer <>
parent 4dff2f1e
......@@ -2752,9 +2752,21 @@ static int raid_ctr(struct dm_target *ti, unsigned argc, char **argv)
if (test_bit(MD_ARRAY_FIRST_USE, &rs->md.flags)) {
set_bit(RT_FLAG_UPDATE_SBS, &rs->runtime_flags);
} else if (rs_is_reshaping(rs))
; /* skip rs setup */
else if (rs_takeover_requested(rs)) {
/* A new raid6 set has to be recovered to ensure proper parity and Q-Syndrome */
if (rs_is_raid6(rs) &&
test_bit(__CTR_FLAG_NOSYNC, &rs->ctr_flags)) {
ti->error = "'nosync' not allowed for new raid6 set";
return -EINVAL;
rs_setup_recovery(rs, 0);
} else if (rs_is_reshaping(rs)) {
/* Have to reject size change request during reshape */
if (calculated_dev_sectors != rs->dev[0].rdev.sectors) {
ti->error = "Can't resize a reshaping raid set";
return -EPERM;
/* skip setup rs */
} else if (rs_takeover_requested(rs)) {
if (rs_is_reshaping(rs)) {
ti->error = "Can't takeover a reshaping raid set";
return -EPERM;
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