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Re: dmg pool operation stuck

Nabarro, Tom
 

Hello,

 

In your server log file there are some error messages about requested huge pages, to start off with I would recommend setting nr_hugepages: 4096 and targets: 8 in the server config file (daos_server.yml). you will need to reformat (umount /mnt/daos then restart daos_server and run dmg storage format in another terminal). Instructions can be found in the admin guide: https://docs.daos.io/admin/deployment/

 

Regards,

Tom

 

From: daos@daos.groups.io <daos@daos.groups.io> On Behalf Of allen.zhuo@...
Sent: Monday, November 29, 2021 11:23 AM
To: daos@daos.groups.io
Subject: [daos] dmg pool operation stuck

 

Hi All:
I installed DAOS from Scratch on ubuntu 20.04. When creating a pool after storage format, the create operation is stuck. 
The "dmg" terminal only printed this message:

$ dmg -i storage format

Format Summary:

  Hosts SCM Devices NVMe Devices

  ----- ----------- ------------

  sw2   1           1

$ dmg -i storage scan

Hosts SCM Total       NVMe Total

----- ---------       ----------

sw2   0 B (0 modules) 4.0 TB (1 controller)

$ dmg -i storage query usage

Hosts SCM-Total SCM-Free SCM-Used NVMe-Total NVMe-Free NVMe-Used

----- --------- -------- -------- ---------- --------- ---------

sw2   0 B       0 B      N/A      0 B        0 B       N/A

$ dmg -i storage query

ERROR: dmg: Please specify one command of: device-health, list-devices, list-pools, target-health or usage

$ dmg -i storage query list-devices

Errors:

  Hosts Error

  ----- -----

  sw2   DAOS I/O Engine instance not started or not responding on dRPC

ERROR: dmg: 1 host had errors

$ dmg -i storage query list-pools

Errors:

  Hosts Error

  ----- -----

  sw2   DAOS I/O Engine instance not started or not responding on dRPC

ERROR: dmg: 1 host had errors

$ dmg -i pool create -z 10GB

Creating DAOS pool with automatic storage allocation: 10 GB NVMe + 6.00% SCM

ERROR: dmg: context deadline exceeded

And the "server" and "engine" did not print any messages, even though I set their log masks to debug.
I am new to daos. Please help me, thanks.
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