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+id = 1562
+title = "qemu live migration with compression ( zstd or zlib ) in same server  always(100% reproduce) failed (recevied ram page flag 0x0)"
+state = "closed"
+created_at = "2023-03-27T05:27:28.419Z"
+closed_at = "2024-05-10T13:27:22.763Z"
+labels = ["Migration"]
+url = "https://gitlab.com/qemu-project/qemu/-/issues/1562"
+host-os = "CentOS Stream 9"
+host-arch = "x86"
+qemu-version = "version 7.2.91 (v8.0.0-rc1-36-g60ca584b8a)"
+guest-os = "centos stream 9"
+guest-arch = "x86_64"
+description = """"""
+reproduce = """1. live migration with compress mode in same server
+2. src:  qemu-system-x86_64  -cpu Cascadelake-Server-v4 -smp 10 -enable-kvm -m 50G -nographic -serial telnet:localhost:4321,server,nowait -nic tap,ifname=tap0,script=no,downscript=no CentOS-Stream-GenericCloud-9-20230123.0.x86_64_test_0.qcow2
+
+```
+   QEMU 7.2.91 monitor - type 'help' for more information
+(qemu) migrate_set_capability compress on
+(qemu) migrate_set_parameter multifd-compression zstd
+(qemu) info migrate_capabilities
+xbzrle: off
+rdma-pin-all: off
+auto-converge: off
+zero-blocks: off
+compress: on
+events: off
+postcopy-ram: off
+x-colo: off
+release-ram: off
+block: off
+return-path: off
+pause-before-switchover: off
+multifd: off
+dirty-bitmaps: off
+postcopy-blocktime: off
+late-block-activate: off
+x-ignore-shared: off
+validate-uuid: off
+background-snapshot: off
+zero-copy-send: off
+postcopy-preempt: off
+(qemu)  info migrate_parameters
+announce-initial: 50 ms
+announce-max: 550 ms
+announce-rounds: 5
+announce-step: 100 ms
+compress-level: 1
+compress-threads: 8
+compress-wait-thread: on
+decompress-threads: 2
+throttle-trigger-threshold: 50
+cpu-throttle-initial: 20
+cpu-throttle-increment: 10
+cpu-throttle-tailslow: off
+max-cpu-throttle: 99
+tls-creds: ''
+tls-hostname: ''
+max-bandwidth: 134217728 bytes/second
+downtime-limit: 300 ms
+x-checkpoint-delay: 20000 ms
+block-incremental: off
+multifd-channels: 2
+multifd-compression: zstd
+xbzrle-cache-size: 67108864 bytes
+max-postcopy-bandwidth: 0
+tls-authz: ''
+(qemu) migrate -d tcp:localhost:4444
+(qemu) qemu-system-x86_64: failed to save SaveStateEntry with id(name): 2(ram): -5
+qemu-system-x86_64: Unable to write to socket: Connection reset by peer
+```
+
+3.dest(in same server): qemu-system-x86_64  -cpu Cascadelake-Server-v4 -smp 10 -enable-kvm -m 50G -nographic -serial telnet:localhost:4322,server,nowait -nic tap,ifname=tap1,script=no,downscript=no --incoming tcp:0:4444  CentOS-Stream-GenericCloud-9-20230123.0.x86_64_test_0.qcow2
+
+```
+ QEMU 7.2.91 monitor - type 'help' for more information
+(qemu) migrate_set_capability compress on
+(qemu) migrate_set_parameter multifd-compression zstd
+(qemu) info mi
+mice                  migrate               migrate_capabilities
+migrate_parameters
+(qemu) info migrate_capabilities
+xbzrle: off
+rdma-pin-all: off
+auto-converge: off
+zero-blocks: off
+compress: on
+events: off
+postcopy-ram: off
+x-colo: off
+release-ram: off
+block: off
+return-path: off
+pause-before-switchover: off
+multifd: off
+dirty-bitmaps: off
+postcopy-blocktime: off
+late-block-activate: off
+x-ignore-shared: off
+validate-uuid: off
+background-snapshot: off
+zero-copy-send: off
+postcopy-preempt: off
+(qemu) info migr
+migrate               migrate_capabilities  migrate_parameters
+(qemu) info migrate_parameters
+announce-initial: 50 ms
+announce-max: 550 ms
+announce-rounds: 5
+announce-step: 100 ms
+compress-level: 1
+compress-threads: 8
+compress-wait-thread: on
+decompress-threads: 2
+throttle-trigger-threshold: 50
+cpu-throttle-initial: 20
+cpu-throttle-increment: 10
+cpu-throttle-tailslow: off
+max-cpu-throttle: 99
+tls-creds: ''
+tls-hostname: ''
+max-bandwidth: 134217728 bytes/second
+downtime-limit: 300 ms
+x-checkpoint-delay: 20000 ms
+block-incremental: off
+multifd-channels: 2
+multifd-compression: zstd
+xbzrle-cache-size: 67108864 bytes
+max-postcopy-bandwidth: 0
+tls-authz: ''
+(qemu) info migrate_capabilitiesqemu-system-x86_64: Unknown combination of migration flags: 0x0
+qemu-system-x86_64: decompress data failed
+qemu-system-x86_64: error while loading state section id 2(ram)
+qemu-system-x86_64: load of migration failed: Operation not permitted
+```"""
+additional = """$ zstd -V
+*** zstd command line interface 64-bits v1.5.1, by Yann Collet ***"""