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add ivshmem documentation
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
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qm.adoc
19
qm.adoc
@ -703,6 +703,25 @@ you need to set the client resolution in the OVMF menu(which you can reach
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with a press of the ESC button during boot), or you have to choose
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SPICE as the display type.
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[[qm_ivshmem]]
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Inter-VM shared memory
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~~~~~~~~~~~~~~~~~~~~~~
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You can add a Inter-VM shared memory device (`ivshmem`) to be able to
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share memory between the host and a guest, or between multiple guests.
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To add such a device, you can use `qm`:
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qm set <vmid> -ivshmem size=32,name=foo
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Where the size is in MiB. The file will be located under
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`/dev/shm/pve-shm-$name` (the default name is the vmid).
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A usecase for such a device is Looking Glass
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footnote:[Looking Glass: https://looking-glass.hostfission.com/]
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which enables high performance, low-latency display mirroring between
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host and guest.
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[[qm_startup_and_shutdown]]
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Automatic Start and Shutdown of Virtual Machines
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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