createami fails with error "must contain the parameter size or snapshotId"

[siddheshsalunke]

Background Info:

• AWS ParallelCluster version [e.g. 2.9.0]: 2.10.2

• Block of Config file:

[cluster pc2102]
base_os                      = alinux2
ebs_settings                 = apps

[ebs apps]
shared_dir                   = /apps
ebs_snapshot_id              = snap-XX

Bug description and how to reproduce:
pcluster createami command returns with exit code 1. Inside packer logs, we see the error as below:

custom-alinux2: Adding tag: "Name": "Packer Builder ami-XX
custom-alinux2: Adding tag: "parallelcluster_version": "aws-parallelcluster-2.10.2"
==> custom-alinux2: Error launching source instance: MissingParameter: The request must contain the parameter size or snapshotId
==> custom-alinux2:     status code: 400, request id: e551fc84-92da-4845-8904-7d35d62a02da

Config File pasted below:

[aws]
aws_region_name = us-east-1

[global]
update_check = true
sanity_check = false
cluster_template = DEVA

[cluster DEVA]
vpc_settings                 = vpc-config
key_name                     = keypair
ec2_iam_role                 = HPCAdministratorAccess
placement_group              = DYNAMIC
placement                    = compute
compute_instance_type        = m5.xlarge
master_instance_type         = m5.large
initial_queue_size           = 1
max_queue_size               = 50
scheduler                    = sge
#cluster_type                 = spot
cluster_type                 = ondemand
#spot_price                   = 1.00

custom_ami                      = ami-XX


scaling_settings             = custom
base_os                      = alinux2
ebs_settings                 = apps
master_root_volume_size      = 100
compute_root_volume_size     = 100

[vpc vpc-config]

vpc_id                       = vpc-XX
#AZ us-east-1c
master_subnet_id            = subnet-XX
#Az us-east-1a 

use_public_ips               = false
vpc_security_group_id        = sg-XX

[scaling custom]
scaledown_idletime = 60

[ebs apps]
shared_dir                   = /apps
ebs_snapshot_id              = snap-XX

Command used to create ami:

pcluster createami --ami-id ami-XX --os alinux2

[yuleiwan]

Hi @siddheshsalunke,

Thanks for reaching out, I'd suggest to check the OS of base ami, is the OS of base ami ami-XX in your case same as the value of --os option you specified? If it's not the case, could you provide more information about your base AMI like Root Device Name? If you don't mind, please provide ami-id as well for further investigation.

Thank you

[siddheshsalunke]

Hi @yuleiwan,

Yes, The base ami is same as mentioned in the --os.

For root device, I have these details:
Filesystem Type Size
/dev/xvda1 xfs 65G
Also the AMI-ID : ami-0d8f82acad91540ee

Please let me know, if you need more details.

[yuleiwan]

Hi @siddheshsalunke,

Could you use command aws ec2 describe-images --image-ids ami-0d8f82acad91540ee --region {your_region} to retrieve the DeviceName info? The failure MissingParameter: The request must contain the parameter size or snapshotId is caused by mismatching the root volume device name between base ami and packer process. In packer process, the root volume device name is set as /dev/xvda for alinux2, if your root volume device name of base ami is not /dev/xvda, build will fail.

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