`mount -a` command is not works for mdadm RAIDs

[hibi]

Hello.

I trying Ubuntu17.10 amd64 from 16.04.
I use mdadm raid array (two array of raid0, raid1).

My problem is `mount -a` command is not works for mdadm RAIDs.
This is issue? or new technical specification?



I setting to "/etc/fstab".
```
UUID=3b1ea9cc-4969-443f-b1f5-XXXX /home/ME/raid0 ext4 noatime     0 2
```

and mount -a command option is not work.(not mounted)
`sudo mount -a`

but, this command is work!
` sudo mount --uuid 3b1ea9cc-4969-443f-b1f5-XXXX /home/ME/raid0 `

I check "/var/log/syslog".
but nothing error message.



I know issue of mdadm RAID array is not mounted when boot.

https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1020032
and others.
https://bugs.launchpad.net/ubuntu/?field.searchtext=fstab+mdadm&search=Search&field.status%3Alist=NEW&field.status%3Alist=INCOMPLETE_WITH_RESPONSE&field.status%3Alist=INCOMPLETE_WITHOUT_RESPONSE&field.status%3Alist=CONFIRMED&field.status%3Alist=TRIAGED&field.status%3Alist=INPROGRESS&field.status%3Alist=FIXCOMMITTED&field.assignee=&field.bug_reporter=&field.omit_dupes=on&field.has_patch=&field.has_no_package=



What should I try?

Thanks.