After update to 5.12 auto deploy of new VM not working

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After update to 5.12 auto deploy of new VM not working

Hi,
as the title says, I need to manually deploy new VMs since the update from 5.10 to 5.12.
I have read that this could be due to the scheduler doesn’t deploy when there are not enough ressources.

The hosts are overcommited and I can’t see a bottleneck there:

  MEMORY
   TOTAL               : 251.5G
   TOTAL +/- RESERVED  : 251.5G
   USED (REAL)         : 163.5G
   USED (ALLOCATED)    : 166G
  CPU
   TOTAL               : 3200
   TOTAL +/- RESERVED  : 9600
   USED (REAL)         : 320
   USED (ALLOCATED)    : 5750

I don’t see any errors in oned.log and also the sched.log doesn’t give me anything:

root@sun01: /var/log/one # cat sched.log

Wed Nov 25 11:55:58 2020 [Z0][SCHED][I]: Init Scheduler Log system
Wed Nov 25 11:55:58 2020 [Z0][SCHED][I]: Starting Scheduler Daemon

     Scheduler Configuration File

DEFAULT_DS_SCHED=POLICY=1
DEFAULT_NIC_SCHED=POLICY=1
DEFAULT_SCHED=POLICY=1
DIFFERENT_VNETS=YES
LIVE_RESCHEDS=0
LOG=DEBUG_LEVEL=3,SYSTEM=file
MAX_DISPATCH=30
MAX_HOST=1
MAX_VM=5000
MEMORY_SYSTEM_DS_SCALE=0
MESSAGE_SIZE=1073741824
ONE_XMLRPC=http://localhost:2633/RPC2
SCHED_INTERVAL=30
TIMEOUT=60

Wed Nov 25 11:55:58 2020 [Z0][SCHED][I]: XML-RPC client using 1073741824 bytes for response buffer.

Wed Nov 25 11:55:59 2020 [Z0][SCHED][I]: oned successfully contacted.
Wed Nov 25 11:55:59 2020 [Z0][SCHED][I]: Configuring scheduler for Zone ID: 0
Wed Nov 25 11:55:59 2020 [Z0][SCHED][I]: Starting scheduler loop...
Wed Nov 25 11:55:59 2020 [Z0][SCHED][I]: Scheduler loop started.

I would be grateful for any help.

Edit: I just realised that there are tons of files created in the /tmp directory of the leader:

-rw-------   1 oneadmin oneadmin  19M 25. Nov 13:39 core-mm_sched-sig6-user9869-group9869-pid3708-time1606307993
-rw-------   1 oneadmin oneadmin  19M 25. Nov 13:39 core-mm_sched-sig6-user9869-group9869-pid3665-time1606307957
-rw-------   1 oneadmin oneadmin  19M 25. Nov 13:38 core-mm_sched-sig6-user9869-group9869-pid3572-time1606307922
-rw-------   1 oneadmin oneadmin  19M 25. Nov 13:38 core-mm_sched-sig6-user9869-group9869-pid3531-time1606307887

I can’t read these files. Does this has anything to do with the problem?