Mem-hotplug » История » Версия 5
Андрей Волков, 2016-08-12 18:47
| 1 | 1 | Андрей Волков | h1. Добавление памяти (ACPI) |
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| 3 | 5 | Андрей Волков | h2. Требования: |
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| 5 | - qemu-2.1+ |
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| 6 | - guest kernel |
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| 8 | 2 | Андрей Волков | h2. На хосте |
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| 10 | 1 | Андрей Волков | *qmp-shell -H /run/qemu/qemu5521.control.sock* |
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| 12 | <pre> |
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| 13 | (QEMU) info memory-devices |
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| 14 | (QEMU) object_add memory-backend-ram,id=mem1,size=2G |
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| 15 | (QEMU) device_add pc-dimm,id=dimm1,memdev=mem1 |
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| 16 | (QEMU) info memory-devices |
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| 17 | Memory device [dimm]: "dimm1" |
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| 18 | addr: 0x2c0000000 |
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| 19 | slot: 0 |
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| 20 | node: 0 |
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| 21 | size: 2147483648 |
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| 22 | memdev: /objects/mem1 |
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| 23 | hotplugged: true |
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| 24 | hotpluggable: true |
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| 25 | 2 | Андрей Волков | </pre> |
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| 27 | h2. На госте |
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| 28 | 5 | Андрей Волков | |
| 29 | В папке */sys/devices/system/memory* лежат куски памяти по 128Мб |
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| 30 | Только такими кусками можно добавлять память в систему. |
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| 31 | 2 | Андрей Волков | |
| 32 | <pre> |
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| 33 | for NAME in $(grep -l offline /sys/devices/system/memory/memory*/state); do echo online > $NAME; done |
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| 34 | 1 | Андрей Волков | </pre> |
| 35 | 3 | Андрей Волков | |
| 36 | 4 | Андрей Волков | h2. Полезные ссылки |
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| 38 | 3 | Андрей Волков | https://github.com/qemu/qemu/blob/master/docs/memory-hotplug.txt |
| 39 | https://medium.com/@juergen_thomann/memory-hotplug-with-qemu-kvm-and-libvirt-558f1c635972#.eenrv1jdb |