Created attachment 745673 [details]
Complete boot log (journalctl -b) after logging in

Our home directory and mail server runs Leap42.2, with both the system and the
homedirectories on a mirrored RAID each.

Already for the second time after booting the system, neither postfix nor the
nfs-server were running.  They had not been started because they depend on the
/home directory (nfs obvious, postfix delivers to Maildir in the home
directories).

Inspecting the boot log (full version attached) the kernel properly detects
both disks of the RAID (/dev/sd[ab]1), the RAID is started with 2 out of 2
disks, and /home gets mounted once the device file is found:

Oct 23 07:44:09 royac6 kernel:  sdb: sdb1
Oct 23 07:44:09 royac6 kernel:  sda: sda1
Oct 23 07:44:12 royac6 kernel: md: bind<sda1>
Oct 23 07:44:13 royac6 kernel: md: bind<sdb1>
Oct 23 07:44:13 royac6 kernel: md/raid1:md1: active with 2 out of 2 mirrors
Oct 23 07:44:13 royac6 kernel: created bitmap (8 pages) for device md1
Oct 23 07:44:13 royac6 kernel: md1: detected capacity change from 0 to
1024061145088
Oct 23 07:44:13 royac6 systemd[1]: Found device
/dev/disk/by-uuid/133b616a-1100-4278-86a7-9eb677783e9b.
Oct 23 07:44:13 royac6 systemd[1]: Started Timer to wait for more drives before
activating degraded array..
Oct 23 07:44:13 royac6 systemd[1]: Mounting /home...
Oct 23 07:44:13 royac6 kernel: EXT4-fs (md1): 1 orphan inode deleted
Oct 23 07:44:13 royac6 kernel: EXT4-fs (md1): recovery complete
Oct 23 07:44:13 royac6 kernel: EXT4-fs (md1): mounted filesystem with ordered
data mode. Opts: discard
Oct 23 07:44:13 royac6 systemd[1]: Mounted /home.

But after 30s systemd decides that there are missing disks, unmounts /home (and
stops postfix/nfs-server before they even got started), only to immediately
find things OK again, and mount /home a second time.

Oct 23 07:44:43 royac6 systemd[1]: Stopped Postfix Mail Transport Agent.
Oct 23 07:44:43 royac6 systemd[1]: Created slice
system-mdadm\x2dlast\x2dresort.slice.
Oct 23 07:44:43 royac6 systemd[1]: Starting Activate md array even though
degraded...
Oct 23 07:44:43 royac6 systemd[1]: Stopped NFS server and services.
Oct 23 07:44:43 royac6 systemd[1]: Stopping NFSv4 ID-name mapping service...
Oct 23 07:44:43 royac6 systemd[1]: Stopped NFS Mount Daemon.
Oct 23 07:44:43 royac6 systemd[1]: Stopped NFSv4 ID-name mapping service.
Oct 23 07:44:43 royac6 systemd[1]: Started Activate md array even though
degraded.
Oct 23 07:44:43 royac6 systemd[1]: Stopped target Local File Systems.
Oct 23 07:44:43 royac6 systemd[1]: Unmounting /home...
Oct 23 07:44:43 royac6 systemd[1]: Stopped (with error) /dev/md1.
Oct 23 07:44:43 royac6 systemd[1]: Unmounted /home.

Oct 23 07:44:44 royac6 systemd[1]: Stopped Timer to wait for more drives before
activating degraded array..
Oct 23 07:44:44 royac6 systemd[1]: Found device
/dev/disk/by-uuid/133b616a-1100-4278-86a7-9eb677783e9b.
Oct 23 07:44:44 royac6 systemd[1]: Mounting /home...

However, the dependent services (postfix, nfs-server) do not get started after
this.

There is nothing in the logs that would suggest a problem with the RAID or any
of it's disks.  /home is mounted, the RAID is active and clean.

Here's the fstab entry for /home:
UUID=133b616a-1100-4278-86a7-9eb677783e9b /home ext4 defaults,discard 0 0


(Note that the later start of postfix at 08:07:15 was triggered manually)