mirror of https://github.com/proxmox/mirror_qemu
migration: Deprecate old compression method
Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Acked-by: Peter Xu <peterx@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> Message-ID: <20231018115513.2163-6-quintela@redhat.com>master
Juan Quintela
parent
66db46ca83
commit
864128df46
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@ -496,3 +496,11 @@ devices or none.
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Please see "QMP invocation for live storage migration with
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``blockdev-mirror`` + NBD" in docs/interop/live-block-operations.rst
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for a detailed explanation.
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old compression method (since 8.2)
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''''''''''''''''''''''''''''''''''
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Compression method fails too much. Too many races. We are going to
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remove it if nobody fixes it. For starters, migration-test
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compression tests are disabled becase they fail randomly. If you need
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compression, use multifd compression methods.
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@ -483,6 +483,11 @@ bool migrate_caps_check(bool *old_caps, bool *new_caps, Error **errp)
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" use blockdev-mirror with NBD instead");
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}
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if (new_caps[MIGRATION_CAPABILITY_COMPRESS]) {
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warn_report("old compression method is deprecated;"
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" use multifd compression methods instead");
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}
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#ifndef CONFIG_REPLICATION
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if (new_caps[MIGRATION_CAPABILITY_X_COLO]) {
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error_setg(errp, "QEMU compiled without replication module"
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@ -1335,18 +1340,26 @@ static void migrate_params_apply(MigrateSetParameters *params, Error **errp)
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/* TODO use QAPI_CLONE() instead of duplicating it inline */
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if (params->has_compress_level) {
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warn_report("old compression is deprecated;"
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" use multifd compression methods instead");
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s->parameters.compress_level = params->compress_level;
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}
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if (params->has_compress_threads) {
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warn_report("old compression is deprecated;"
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" use multifd compression methods instead");
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s->parameters.compress_threads = params->compress_threads;
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}
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if (params->has_compress_wait_thread) {
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warn_report("old compression is deprecated;"
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" use multifd compression methods instead");
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s->parameters.compress_wait_thread = params->compress_wait_thread;
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}
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if (params->has_decompress_threads) {
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warn_report("old compression is deprecated;"
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" use multifd compression methods instead");
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s->parameters.decompress_threads = params->decompress_threads;
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}
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@ -272,6 +272,10 @@
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# Features:
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#
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# @deprecated: Member @disk is deprecated because block migration is.
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# Member @compression is deprecated because it is unreliable and
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# untested. It is recommended to use multifd migration, which
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# offers an alternative compression implementation that is
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# reliable and tested.
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#
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# Since: 0.14
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##
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@ -289,7 +293,7 @@
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'*blocked-reasons': ['str'],
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'*postcopy-blocktime': 'uint32',
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'*postcopy-vcpu-blocktime': ['uint32'],
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'*compression': 'CompressionStats',
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'*compression': { 'type': 'CompressionStats', 'features': [ 'deprecated' ] },
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'*socket-address': ['SocketAddress'],
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'*dirty-limit-throttle-time-per-round': 'uint64',
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'*dirty-limit-ring-full-time': 'uint64'} }
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@ -530,7 +534,10 @@
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# Features:
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#
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# @deprecated: Member @block is deprecated. Use blockdev-mirror with
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# NBD instead.
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# NBD instead. Member @compression is deprecated because it is
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# unreliable and untested. It is recommended to use multifd
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# migration, which offers an alternative compression
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# implementation that is reliable and tested.
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#
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# @unstable: Members @x-colo and @x-ignore-shared are experimental.
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#
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@ -538,7 +545,8 @@
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##
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{ 'enum': 'MigrationCapability',
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'data': ['xbzrle', 'rdma-pin-all', 'auto-converge', 'zero-blocks',
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'compress', 'events', 'postcopy-ram',
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{ 'name': 'compress', 'features': [ 'deprecated' ] },
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'events', 'postcopy-ram',
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{ 'name': 'x-colo', 'features': [ 'unstable' ] },
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'release-ram',
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{ 'name': 'block', 'features': [ 'deprecated' ] },
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@ -844,7 +852,9 @@
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# Features:
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#
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# @deprecated: Member @block-incremental is deprecated. Use
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# blockdev-mirror with NBD instead.
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# blockdev-mirror with NBD instead. Members @compress-level,
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# @compress-threads, @decompress-threads and @compress-wait-thread
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# are deprecated because @compression is deprecated.
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#
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# @unstable: Members @x-checkpoint-delay and @x-vcpu-dirty-limit-period
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# are experimental.
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@ -854,8 +864,11 @@
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{ 'enum': 'MigrationParameter',
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'data': ['announce-initial', 'announce-max',
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'announce-rounds', 'announce-step',
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'compress-level', 'compress-threads', 'decompress-threads',
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'compress-wait-thread', 'throttle-trigger-threshold',
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{ 'name': 'compress-level', 'features': [ 'deprecated' ] },
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{ 'name': 'compress-threads', 'features': [ 'deprecated' ] },
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{ 'name': 'decompress-threads', 'features': [ 'deprecated' ] },
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{ 'name': 'compress-wait-thread', 'features': [ 'deprecated' ] },
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'throttle-trigger-threshold',
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'cpu-throttle-initial', 'cpu-throttle-increment',
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'cpu-throttle-tailslow',
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'tls-creds', 'tls-hostname', 'tls-authz', 'max-bandwidth',
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@ -1023,7 +1036,9 @@
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# Features:
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#
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# @deprecated: Member @block-incremental is deprecated. Use
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# blockdev-mirror with NBD instead.
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# blockdev-mirror with NBD instead. Members @compress-level,
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# @compress-threads, @decompress-threads and @compress-wait-thread
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# are deprecated because @compression is deprecated.
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#
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# @unstable: Members @x-checkpoint-delay and @x-vcpu-dirty-limit-period
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# are experimental.
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@ -1038,10 +1053,14 @@
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'*announce-max': 'size',
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'*announce-rounds': 'size',
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'*announce-step': 'size',
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'*compress-level': 'uint8',
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'*compress-threads': 'uint8',
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'*compress-wait-thread': 'bool',
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'*decompress-threads': 'uint8',
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'*compress-level': { 'type': 'uint8',
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'features': [ 'deprecated' ] },
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'*compress-threads': { 'type': 'uint8',
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'features': [ 'deprecated' ] },
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'*compress-wait-thread': { 'type': 'bool',
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'features': [ 'deprecated' ] },
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'*decompress-threads': { 'type': 'uint8',
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'features': [ 'deprecated' ] },
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'*throttle-trigger-threshold': 'uint8',
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'*cpu-throttle-initial': 'uint8',
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'*cpu-throttle-increment': 'uint8',
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@ -1078,7 +1097,7 @@
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# Example:
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#
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# -> { "execute": "migrate-set-parameters" ,
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# "arguments": { "compress-level": 1 } }
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# "arguments": { "multifd-channels": 5 } }
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# <- { "return": {} }
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##
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{ 'command': 'migrate-set-parameters', 'boxed': true,
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@ -1241,7 +1260,9 @@
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# Features:
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#
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# @deprecated: Member @block-incremental is deprecated. Use
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# blockdev-mirror with NBD instead.
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# blockdev-mirror with NBD instead. Members @compress-level,
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# @compress-threads, @decompress-threads and @compress-wait-thread
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# are deprecated because @compression is deprecated.
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#
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# @unstable: Members @x-checkpoint-delay and @x-vcpu-dirty-limit-period
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# are experimental.
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@ -1253,10 +1274,14 @@
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'*announce-max': 'size',
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'*announce-rounds': 'size',
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'*announce-step': 'size',
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'*compress-level': 'uint8',
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'*compress-threads': 'uint8',
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'*compress-wait-thread': 'bool',
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'*decompress-threads': 'uint8',
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'*compress-level': { 'type': 'uint8',
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'features': [ 'deprecated' ] },
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'*compress-threads': { 'type': 'uint8',
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'features': [ 'deprecated' ] },
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'*compress-wait-thread': { 'type': 'bool',
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'features': [ 'deprecated' ] },
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'*decompress-threads': { 'type': 'uint8',
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'features': [ 'deprecated' ] },
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'*throttle-trigger-threshold': 'uint8',
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'*cpu-throttle-initial': 'uint8',
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'*cpu-throttle-increment': 'uint8',
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@ -1296,10 +1321,8 @@
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#
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# -> { "execute": "query-migrate-parameters" }
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# <- { "return": {
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# "decompress-threads": 2,
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# "multifd-channels": 2,
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# "cpu-throttle-increment": 10,
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# "compress-threads": 8,
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# "compress-level": 1,
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# "cpu-throttle-initial": 20,
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# "max-bandwidth": 33554432,
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# "downtime-limit": 300
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