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Diffstat (limited to 'results/classifier/gemma3:12b/socket/2720')
| -rw-r--r-- | results/classifier/gemma3:12b/socket/2720 | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/results/classifier/gemma3:12b/socket/2720 b/results/classifier/gemma3:12b/socket/2720 new file mode 100644 index 000000000..49d1d7d96 --- /dev/null +++ b/results/classifier/gemma3:12b/socket/2720 @@ -0,0 +1,71 @@ + +migration failure from qemu 7.1.0 to qemu 9.2.0+ with multifd capability enabled +Description of problem: +Enabling multifd when doing migration from qemu 7.1.0 to 9.2.0+ causes the migration to fail. +The migration status reported is: + +``` +Migration status: failed (Unable to write to socket: Broken pipe) +``` + +I could reproduce on qemu 9.2.0 and from a build from master. The migration is successful if I don't enable multifd. + +I could not reproduce this issue migrating from 7.1.0 to 9.1.2. +Steps to reproduce: +Minimal setup to reproduce below, running both qemu instances on the same host. + +1. Start qemu instance receiving the migration: + +``` +$ qemu-system-x86_64 -version +QEMU emulator version 9.2.50 (v9.2.0-28-ga5ba0a7e4e) + +$ qemu-system-x86_64 -M pc-q35-7.1 -m 16G -nographic -incoming defer -net none -trace 'migration*' +[...] +(qemu) migrate_set_capability multifd on +(qemu) migrate_set_parameter multifd-channels 4 +(qemu) migrate_incoming tcp:0:12345 +[...] +(qemu) migration_socket_incoming_accepted +migration_set_incoming_channel ioc=0x5619735b1800 ioctype=qio-channel-socket +migration_socket_incoming_accepted +migration_set_incoming_channel ioc=0x561972dff670 ioctype=qio-channel-socket +migration_socket_incoming_accepted +migration_set_incoming_channel ioc=0x561972dad800 ioctype=qio-channel-socket +migration_socket_incoming_accepted +migration_set_incoming_channel ioc=0x561972c9d670 ioctype=qio-channel-socket +migration_socket_incoming_accepted +migration_set_incoming_channel ioc=0x561972c7b270 ioctype=qio-channel-socket + +``` + +2. Start the qemu instance that will be used to initiate the migration with multifd enabled, and initiate the migration + +``` +$ qemu-system-x86_64 -version +QEMU emulator version 7.1.0 (v7.1.0) + +$ qemu-system-x86_64 -M pc-q35-7.1 -m 16G -nographic -net none -trace 'migration*' +[...] +(qemu) migrate_set_capability multifd on +(qemu) migrate_set_parameter multifd-channels 4 +(qemu) migrate -d tcp:0:12345 +(qemu) migration_socket_outgoing_connected hostname=0 +migration_set_outgoing_channel ioc=0x558ea2051400 ioctype=qio-channel-socket hostname=0 err=(nil) +migration_bitmap_sync_start +migration_bitmap_sync_end dirty_pages 0 +migration_thread_setup_complete +migration_bitmap_clear_dirty rb pc.ram start 0x0 size 0x40000000 page 0x0 +migration_thread_after_loop +qemu-system-x86_64: Unable to write to socket: Broken pipe +(qemu) info migrate +globals: +store-global-state: on +only-migratable: off +send-configuration: on +send-section-footer: on +decompress-error-check: on +clear-bitmap-shift: 18 +Migration status: failed (Unable to write to socket: Broken pipe) +total time: 0 ms +``` |