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migration: Deprecate zero-blocks capability

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The zero-blocks capability was meant to be used along with the block
migration, which has been removed already in commit eef0bae3a7
("migration: Remove block migration").

Setting zero-blocks is currently a noop, but the outright removal of
the capability would cause and error in case some users are still
setting it. Put the capability through the deprecation process.

Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/20240919134626.166183-4-dave@treblig.org
Signed-off-by: Peter Xu <peterx@redhat.com>
This commit is contained in:
Fabiano Rosas 2024-09-19 14:46:22 +01:00 • committed by Peter Xu
parent 21ed5ff606
commit 73581a041e
3 changed files with 14 additions and 1 deletions
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4
migration/options.c
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@ -450,6 +450,10 @@ bool migrate_caps_check(bool *old_caps, bool *new_caps, Error **errp)
ERRP_GUARD();
MigrationIncomingState *mis = migration_incoming_get_current();
if (new_caps[MIGRATION_CAPABILITY_ZERO_BLOCKS]) {
warn_report("zero-blocks capability is deprecated");
}
#ifndef CONFIG_REPLICATION
if (new_caps[MIGRATION_CAPABILITY_X_COLO]) {
error_setg(errp, "QEMU compiled without replication module"