Grow: Frozen array can't be idle

When array is frozen but there is no recovery/reshape in mdstat,
check_idle() will not return error but grow countinue can still working.

Check is array frozen. Do not use sysfs sync_action parameter because it
doesn't exist for Raid0, simply check metadata_version in mdstat.

Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
1 file changed