One disk over your bucket, mounted on every node.

# The disk over the bucket your data already
# lives in. Nothing is copied or converted.
resource "archil_disk" "genomics" {
  name = "genomics"
 
  mount {
    type        = "s3"
    bucket_name = "your-genomics-bucket"
  }
}
 
# Nextflow's work directory gets its own
# Archil-managed disk, so intermediates never
# land in your bucket.
resource "archil_disk" "work" {
  name = "nextflow-work"
}
 
# With no access keys, your bucket policy grants
# Archil's role access, scoped to this one disk
# by its session ID.
output "archil_session_id" {
  value = archil_disk.genomics.mount[0].session_id
}

# At boot on every Slurm compute node
curl -s https://archil.com/install | sh
 
# On AWS, the node's IAM role is a disk user: no token.
# --conditional lets every node write at once.
sudo mkdir -p /mnt/archil /mnt/work
sudo archil mount genomics /mnt/archil \
    --region aws-us-east-1 --conditional
sudo archil mount nextflow-work /mnt/work \
    --region aws-us-east-1 --conditional
 
# close() sends a file's writes to the disk, and creates
# and renames land before they return, so another node
# that opens the file next reads them. Listings cache
# for five minutes by default; refresh the work
# directory's in seconds.
archil set-cache-expiry /mnt/work --readdir-expiry 5

// nf-core/sarek on Kubernetes, EKS included. Both
// claims are ReadWriteMany volumes on the Archil CSI
// driver. (Nextflow's AWS Batch executor stages
// inputs through S3, so use k8s or Slurm.)
process.executor = 'k8s'
 
k8s {
    storageClaimName = 'nextflow-work'
    storageMountPath = '/mnt/work'
}
workDir = '/mnt/work'
 
process.pod = [volumeClaim: 'genomics', mountPath: '/mnt/archil']
 
// Point at prebuilt index files, so the pipeline
// reads them in place instead of building them.
params {
    igenomes_ignore = true
    fasta   = '/mnt/archil/references/GRCh38/GRCh38.fa'
    bwamem2 = '/mnt/archil/references/GRCh38/bwamem2/'
    input   = '/mnt/archil/runs/2026-11/samplesheet.csv'
    outdir  = '/mnt/archil/results/2026-11'
}