ValidĪctions are: "ignore" (ignore the error and try to continue), werror= action ,rerror= action Specify which action to take on write and read errors. addr= addr Specify the controller's PCI address (if=virtio only).
QEMU SERIAL NUMBER
serial= serial This option specifies the serial number to assign to the device. Can be used to specifiy format=raw to avoid interpreting an format= format Specify which disk format will be used rather than detecting theįormat. Some machine types may not support discard (also known as trim or unmap) requests are ignored or passed "unmap" (or "on") and controls whether discard discard= discard discard is one of "ignore" (or "off") or aio= aio aio is "threads", or "native" and selectsīetween pthread based disk I/O and native Linux AIO. "unsafe", "directsync" or "writethrough" andĬontrols how the host cache is used to access block data. cache= cache cache is "none", "writeback", Mode for the given drive (see -snapshot). snapshot= snapshot snapshot is "on" or "off" and controls snapshot cyls= c ,heads= h ,secs= s These options have the same definition as they have in media= media This option defines the type of the media: disk or cdrom. List of available connectors of a given interface type. index= index This option defines where is connected the drive by using an index in the bus= bus ,unit= unit These options define where is connected the drive by defining the bus if= interface This option defines on which type on interface the drive is connected.Īvailable types are: ide, scsi, sd, mtd, floppy, pflash, virtio. See the section for "Device URL Syntax" for more Special files such as iSCSI devices can be specified using protocol specific VCPUs respectively, and possibly -object to specify the memory Still has to use the -m, -smp options to allocate RAM and Is, it just assigns existing resources to NUMA nodes. numa option doesn't allocate any of the specified resources. If mem, memdev andĬpus are omitted, resources are split equally. Node ] Simulate a multi node NUMA system. Maxcpus specifies the maximum number of hotpluggable CPUs. Values is given, the total number of CPUs n can be omitted. Number of threads per cores and the total number of socketsĬan be specified.
QEMU PC
For the PC target, the number of cores per socket, the On Sparc32 target, Linux limits the number of usableĬPUs to 4. On the PC target, up to 255ĬPUs are supported.
cpu model Select CPU model ("-cpu help" for list and additional feature
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