BCF-7096: Activate swap partition for BMR needs

[Kyrylo Vorobiov (kiru6a)]

• activate swap partition(s) before starting restore with Backup Manager

BCF-7096: Activate swap partition for BMR needs

[Copilot]

Pull request overview

This PR adds an optional pre-restore step for BACKUP=COVE to enable swap devices (from LAYOUT_FILE) before the Cove/Backup Manager restore starts, to increase available virtual memory during BMR restores.

Changes:

• Added a new restore-stage script to locate swap entries in LAYOUT_FILE and attempt to activate them.
• Added a new COVE_ACTIVATE_SWAP_PARTITIONS default setting to control whether swap activation runs.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

File	Description
usr/share/rear/restore/COVE/default/300_activate_swap_partitions.sh	New restore hook that collects swap devices from LAYOUT_FILE, deactivates existing swap, and activates swap devices before restore.
usr/share/rear/conf/default.conf	Introduces COVE_ACTIVATE_SWAP_PARTITIONS default config flag for the new restore hook.

Comments suppressed due to low confidence (1)

usr/share/rear/restore/COVE/default/300_activate_swap_partitions.sh:9

• LAYOUT_FILE “swap” entries can refer to swap files as well as partitions. Because this script checks -b, swap files will always be treated as errors (“not a block device”) even though they may be valid in the source system. Consider filtering to actual block devices when building swap_devices, or handling regular files separately (or downgrading the log level for non-block entries).

while read -r _ device _; do
    swap_devices+=("$device")
done < <( grep "^swap " "$LAYOUT_FILE" )

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[Andrus Suvalau (svlv)]

Thank you!