Re: raid1 becoming raid0 when device is removed before reboot

[Niklas Hambüchen <mail@xxxxxx>]

On 05/12/2018 9:07 AM, Guoqing Jiang wrote:> Pls re-compile mdadm with this, and see if it works.
> diff --git a/util.c b/util.c
> index c26cf5f3f78b..bd00ebde06a9 100644
> --- a/util.c
> +++ b/util.c
> @@ -1919,6 +1919,7 @@ int set_array_info(int mdfd, struct supertype *st, struct mdinfo *info)
>           * and older kernels
>           */
>          mdu_array_info_t inf;
> +       struct mdinfo info1;
>          int rv;
>
>          if (st->ss->external)
> @@ -1927,6 +1928,11 @@ int set_array_info(int mdfd, struct supertype *st, struct mdinfo *info)
>          memset(&inf, 0, sizeof(inf));
>          inf.major_version = info->array.major_version;
>          inf.minor_version = info->array.minor_version;
> +
> +       /* set the correct level based on sb */
> +       st->ss->getinfo_super(st, &info1, NULL);
> +       inf.level = info1.array.level;
> +
>          rv = md_set_array_info(mdfd, &inf);
>
>          return rv;

I tried this just now, but it doesn't seem to have any effect.