> 2023年3月14日 22:58，Li Xiao Keng <lixiaokeng@xxxxxxxxxx> 写道：
>
> Hi,
> Here we meet a question. When we add a new disk to a raid, it may return
> -EBUSY.
> The main process of --add（for example md0, sdf):
> 1.dev_open(sdf)
> 2.add_to_super
> 3.write_init_super
> 4.fsync(fd)
> 5.close(fd)
> 6.ioctl(ADD_NEW_DISK).
> However, there will be some udev(change of sdf) event after step5. Then
> "/usr/sbin/mdadm --incremental --export $devnode --offroot $env{DEVLINKS}"
> will be run, and the sdf will be added to md0. After that, step6 will return
> -EBUSY.
> It is a problem to user. First time adding disk does not return success
> but disk is actually added. And I have no good idea to deal with it. Please
> give some great advice.
BTW, may I ask what is the mdadm version used in the above scenario?
Thanks.
Coly Li
