diff --git a/jobs/swh-packages.yaml b/jobs/swh-packages.yaml
index 1785b01..eab7767 100644
--- a/jobs/swh-packages.yaml
+++ b/jobs/swh-packages.yaml
@@ -1,155 +1,157 @@
 - job-group:
     name: 'swh-jobs-{name}'
     jobs:
       - "{name}"
       - "{name}/incoming-tag"
       - "{name}/pypi-upload"
       - "{name}/tests"
       - "{name}/tox"
       - "debian/packages/{name}"
       - "debian/packages/{name}/update-for-release"
       - "debian/packages/{name}/automatic-backport"
       - "debian/packages/{name}/gbp-buildpackage"
 
 - project:
     name: DCORE
     display-name: swh-core
     pkg: core
     jobs:
       - 'swh-jobs-{name}'
 
 - project:
     name: DDEP
     display-name: swh-deposit
     pkg: deposit
     jobs:
       - 'swh-jobs-{name}'
 
 - project:
     name: DGRPH
     display-name: swh-graph
     pkg: graph
     jobs:
       - 'swh-jobs-{name}'
 
 - project:
     name: DCIDX
     display-name: swh-indexer
     pkg: indexer
     jobs:
       - 'swh-jobs-{name}'
 
 - project:
     name: DICP
     display-name: swh-icinga-plugins
     pkg: icinga-plugins
     jobs:
       - 'swh-jobs-{name}'
 
 - project:
     name: DJNL
     display-name: swh-journal
     docker-image: swh-kafka
     pkg: journal
     jobs:
       - 'swh-jobs-{name}'
 
 - project:
     name: DLS
     display-name: swh-lister
     pkg: lister
     jobs:
       - 'swh-jobs-{name}'
 
 - project:
     name: DLDBASE
     display-name: swh-loader-core
     pkg: loader.core
     jobs:
       - 'swh-jobs-{name}'
 
 - project:
     name: DLDG
     display-name: swh-loader-git
     pkg: loader.git
     jobs:
       - 'swh-jobs-{name}'
 
 - project:
     name: DLDHG
     display-name: swh-loader-mercurial
     pkg: loader.mercurial
     jobs:
       - 'swh-jobs-{name}'
 
 - project:
     name: DLDSVN
     display-name: swh-loader-svn
     pkg: loader.svn
     jobs:
       - 'swh-jobs-{name}'
 
 - project:
     name: DMOD
     display-name: swh-model
     pkg: model
     jobs:
       - 'swh-jobs-{name}'
 
 - project:
     name: DOBJS
     display-name: swh-objstorage
     pkg: objstorage
     deb-extra-repositories: ceph
     jobs:
       - 'swh-jobs-{name}'
 
 - project:
     name: DSEA
     display-name: swh-search
     pkg: search
     jobs:
       - 'swh-jobs-{name}'
 
 - project:
     name: TSBX
     display-name: swh-sandbox
     pkg: sandbox
     incoming-tag-auto-pypi-host: test.pypi.org
     jobs:
       - "{name}"
       - "{name}/incoming-tag"
       - "{name}/pypi-upload"
       - "{name}/tests"
       - "{name}/tox"
 
 - project:
     name: DSCH
     display-name: swh-scheduler
     pkg: scheduler
     jobs:
       - 'swh-jobs-{name}'
 
 - project:
     name: DSTO
     display-name: swh-storage
     pkg: storage
     jobs:
       - 'swh-jobs-{name}'
+      - '{name}/tox':
+          pytest_params: -m cassandra -n 3
 
 - project:
     name: DVAU
     display-name: swh-vault
     pkg: vault
     jobs:
       - 'swh-jobs-{name}'
 
 - project:
     name: DWAPPS
     display-name: swh-web
     pkg: web
     jobs:
       - 'swh-jobs-{name}'
       - '{name}/cypress'
       - '{name}/cypress-diff'
 
diff --git a/jobs/templates/swh-tox.yaml b/jobs/templates/swh-tox.yaml
index b55899a..f645972 100644
--- a/jobs/templates/swh-tox.yaml
+++ b/jobs/templates/swh-tox.yaml
@@ -1,52 +1,56 @@
 - job-template:
     name: '{name}/tox'
     display-name: 'Phab. Diff'
     docker-image: swh-tox
     node: "{docker-image}"
     auth-token: ph4br1cat0r
     parameters:
       - string:
           name: REPO
           description: PHID of the Diffusion repository
       - string:
           name: PHID
           description: PHID of the Target object
       - string:
           name: DIFF_ID
           description: ID of the Diff patch to apply, if any
+      - string:
+          name: pytest_params
+          description: extra parameters to pass to pytest
+          default: ""
     scm:
       - git:
           url: https://forge.softwareheritage.org/source/{display-name}.git
           branches:
             - origin/master
 
     wrappers:
       - phabricator-differential:
           apply-to-master: true
           patch-with-force-flag: true
 
 
     builders:
       - shell: |
           echo "Run tox for:"
           echo "  REPO=$REPO"
           echo "  PHID=$PHID"
           echo "  DIFF_ID=$DIFF_ID"
       - shell: |
           if (python3 -m tox -a | grep -q -e '^flake8-phab$' ); then
               python3 -m tox -e flake8-phab
           else
               python3 -m tox -e flake8
           fi
-      - shell: python3 -m tox --result-json tox-results.json
+      - shell: python3 -m tox --result-json tox-results.json -- $pytest_params
 
     publishers:
       - phabricator:
           uberalls-enabled: false
           comment-on-success: true
           comment-with-console-link-on-failure: true
           process-lint: true
           lint-file: .phabricator-lint
           lint-file-size: 1000000
       - archive:
           artifacts: "*.json,.coverage*,.phabricator*"