On Mon, Oct 11, 2021 at 5:42 PM Li Feng <fengli@xxxxxxxxxx> wrote: > > Xiao Ni <xni@xxxxxxxxxx> 于2021年10月11日周一 下午3:49写道： > > > > Hi all > > > > Now the per device sysfs interface file state can change failfast. Do > > we need a new file for failfast? > > > > I did a test. The steps are: > > > > mdadm -CR /dev/md0 -l1 -n2 /dev/sdb /dev/sdc --assume-clean > > cd /sys/block/md0/md/dev-sdb > > echo failfast > state > > cat state > > in_sync,failfast > > This works, will it be persisted to disk? > mdadm --detail /dev/md0 can show the failfast information. So it should be written in superblock. But I don't find how md does this. I'm looking at this. Regards Xiao
