On hosts where the boot medium is BMC/IPMI virtual media, the ~2.8 GB
squashfs read often drops mid-transfer: rsync dies with "Input/output
error (5)", every file "has vanished", and live-boot moves the partial
RAM copy over the medium, ending the boot with "No supported filesystem
images found at /live".
Add hook 9013-toram-retry, which patches live-boot's 9990-toram-todisk.sh
so the whole-medium copy runs in a retry loop: up to 8 attempts with a
geometrically growing pause (15s -> 900s cap), unmounting/waiting/remounting
the medium between tries and honouring rsync's exit code (upstream ignores
it). rsync resumes from where it stopped, so a retry needing only the tail
finishes fast.
Verified against live-boot 1:20230131+deb12u1: substitution applies,
sh -n is clean, hook is idempotent.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018JA6Cj84yxUfk8N3ppw6mr
