Bug #18732
Updated by Peter Amstutz about 2 years ago
Getting this error:
<pre>
2022-02-14T15:44:13.011645007Z [singularity build /tmp/crunch-run.x1pr8-dz642-nd5m2icieqol3zo.1865379834/keep2196129160/by_uuid/x1pr8-4zz18-zxxvvxctd0khbp1/image.sif docker-archive:///tmp/crunch-run-singularity-396810067/image.tar]
2022-02-14T15:44:13.035750005Z INFO: Starting build...
2022-02-14T15:44:13.035750005Z FATAL: While performing build: conveyor failed to get: error opening file "/tmp/crunch-run-singularity-396810067/image.tar": open /tmp/crunch-run-singularity-396810067/image.tar: permission denied
</pre>
What seems to be happening is that "singularity build" uses suid to change over to the root user. If crunch-run is launched as a non-root user (and runs arv-mount as non-root), then when singularity changes to root, it can't read from the mount.
The solution is to add "--allow-other" to arv-mount.