OS 5 seems to have broken my RAID

My RAID won’t mount, it would seem, as a result of the 5.x update.

The rc.local should force the RAID’s creation, but doesn’t.

# /etc/rc.local

# Disable NCQ (fix RAID issue)
echo 1 > /sys/block/sda/device/queue_depth
echo 1 > /sys/block/sdb/device/queue_depth
# /fix

# https://linux.die.net/man/8/hdparm
# set HD sleep to 15 minutes (180 intervals of 5 seconds/60 seconds/minute)
hdparm -S 180 /dev/sda
hdparm -S 180 /dev/sdb

# start RAID array
mdadm --assemble --force /dev/md0 /dev/sda /dev/sdb

exit 0

If I run mdadm --assemble --force /dev/md0 /dev/sda /dev/sdb manually, the device appears to be mounted:

# lsblk -o NAME,SIZE,MOUNTPOINT,STATE,FSTYPE,MODEL,SERIAL,UUID,LABEL
NAME          SIZE MOUNTPOINT STATE   FSTYPE            MODEL            SERIAL     UUID                                 LABEL
sda           1.8T            running linux_raid_member ST32000542AS                218644db-21b7-7817-36c7-653d201f9ed5 turris:0
└─md0         1.8T                                                                                                       
sdb           1.8T            running linux_raid_member ST32000542AS                218644db-21b7-7817-36c7-653d201f9ed5 turris:0
└─md0         1.8T                                                                                                       
mtdblock0       1M                                                                                                       
mtdblock1       7M                                                                                                       
mmcblk0       7.3G                                                       0x0ea2ec8d                                      
└─mmcblk0p1   7.3G /                  btrfs                                         03e745f9-b279-4219-bca9-45ff92000aec 
mmcblk0boot0    4M                                                                                                       
mmcblk0boot1    4M                                                                                                       

For some reason, /dev/md0 isn’t listed in the mount points:

I was hoping to mount it to /mnt/raid, which still exists.

I have a separate, external SSD drive that I’m mapping to /srv. I disconnected it to ensure that the two, RAID devices were seen as /dev/sda and /dev/sdb.

Is this relevant?

etc/config/storage

config srv 'srv'
	option raid 'custom'
	option uuid ''
	option old_uuid ''

#config srv 'srv'
#	option raid 'custom'
#	option uuid '6b22cea8-8369-4983-b9fc-ae1fddce71f1'

Any suggestion would be appreciated.