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qemu live migration with compression ( zstd or zlib ) in same server always(100% reproduce) failed (recevied ram page flag 0x0)
Description of problem:
Steps to 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 information:
$ zstd -V
*** zstd command line interface 64-bits v1.5.1, by Yann Collet ***
|