On install: if /etc/multipath.conf already exists, append a tagged
block rather than skipping silently (old) or overwriting (dangerous).
On upgrade: replace only the tagged block, leaving the rest untouched.
On remove/purge: strip the tagged block; rest of the file preserved.
This means admins who added their own stanzas during manual testing
(e.g. before the package existed) won't lose config on install or
upgrade. Closes the silent "file already exists" footgun.
Also fixes pre-existing SC2015 shellcheck warnings in postrm.
Refs #256
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Adds TrueNASMultipath.pm — a separate PVE storage type 'truenas-multipath'
that inherits all REST API and iSCSI resource management from TrueNAS.pm but
uses iscsiadm + dm-multipath for block device access:
path() → /dev/mapper/<wwid> (NAA from TrueNAS extent)
activate_volume() → iscsiadm login on each portal in truenas_portals;
waits for /dev/mapper device to appear
deactivate_volume()→ multipath flush + iscsiadm logout
qemu_blockdev_options → returns undef (path() used instead)
Packaging:
packaging/DEBIAN-multipath/ — control.j2, postinst, postrm,
changelog.Debian, multipath.conf.example
Distributed via the 'multipath' apt component (ADR-011)
Depends: truenas-proxmox >= 3.1.0, open-iscsi, multipath-tools
CI (build.yml):
- Third staging dir (dist-multipath) and .deb output
- multipath component pool under pool/multipath/v<major>
- Both stable and testing publish steps updated to generate
main + multipath components; Release lists both
- Lint checks TrueNASMultipath.pm and multipath packaging scripts
PoC confirmed 2026-06-07 on pve01-hq against TrueNAS SCALE 24.10:
- Two sessions (172.31.69.91 + 192.168.69.91), both active
- dm-multipath aggregated 3 disks × 2 paths each
- /dev/mapper/mpath* devices appeared correctly
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Kevin Adams