Files
pulse/docs
rcourtman dff8ae12d5 Keep last-known PMG backups when backup reads fail (#3028)
Since #2991 stopped guessing a PMG backup node from the connection name,
a failed `/config/cluster/status` read leaves no node to ask for
backups, and the poller still published that empty result.
`UpdatePMGBackups` replaces the instance's whole list, so one transient
cluster-status failure, or every node's backup read failing, wiped every
known PMG backup and the Backups view flapped empty until the next good
poll.

Only a node whose backup list was read is now authoritative for that
cycle. Nodes that were not read (every node after a failed cluster read,
a node whose backup read failed, or one a cancelled poll never reached)
keep their previous backups. This is the same per-scope carry the PVE
storage backup poller applies to failed storages
(`preserveFailedStorageBackups`). A node that answered with no backups,
or that a successful cluster read no longer lists, still clears its
entries. The failed read is still recorded as a poll failure. #2991's
rule against guessing node names is unchanged.

Tests in `monitor_pmg_test.go`: the three retention tests fail on main
and pass with this change. A complete enumeration that returns no
backups still clears the list.


The monitoring subsystem contract now records the carry (new section
"PMG backups keep last-known entries for unread nodes"), and the #2960
note no longer says a failed cluster read publishes an empty backup
list.

Replaces #3005, rebuilt on current main with the contract note.
2026-10-17 10:10:03 +01:00
..
2026-10-16 20:44:47 +01:00
2026-10-16 20:44:47 +01:00
2026-10-16 20:44:47 +01:00

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