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vmm: Add ability to add virtio-fs device post-boot

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Adds DeviceManager method `make_virtio_fs_device` which creates a single
device, and modifies `make_virtio_fs_devices` to use this method.

Implements the new `vm.add-fs route`.

Signed-off-by: Dean Sheather <dean@coder.com>
This commit is contained in:
Dean Sheather
2020-04-14 19:21:24 +10:00
committed by Sebastien Boeuf
parent bb2139a408
commit c2abadc293
5 changed files with 213 additions and 94 deletions
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24
vmm/src/lib.rs
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@@ -18,7 +18,9 @@ extern crate url;
extern crate vmm_sys_util;
use crate::api::{ApiError, ApiRequest, ApiResponse, ApiResponsePayload, VmInfo, VmmPingResponse};
use crate::config::{DeviceConfig, DiskConfig, NetConfig, PmemConfig, RestoreConfig, VmConfig};
use crate::config::{
DeviceConfig, DiskConfig, FsConfig, NetConfig, PmemConfig, RestoreConfig, VmConfig,
};
use crate::migration::{recv_vm_snapshot, vm_config_from_snapshot};
use crate::seccomp_filters::{get_seccomp_filter, Thread};
use crate::vm::{Error as VmError, Vm, VmState};
@@ -483,6 +485,19 @@ impl Vmm {
}
}
fn vm_add_fs(&mut self, fs_cfg: FsConfig) -> result::Result<(), VmError> {
if let Some(ref mut vm) = self.vm {
if let Err(e) = vm.add_fs(fs_cfg) {
error!("Error when adding new fs to the VM: {:?}", e);
Err(e)
} else {
Ok(())
}
} else {
Err(VmError::VmNotRunning)
}
}
fn vm_add_pmem(&mut self, pmem_cfg: PmemConfig) -> result::Result<(), VmError> {
if let Some(ref mut vm) = self.vm {
if let Err(e) = vm.add_pmem(pmem_cfg) {
@@ -701,6 +716,13 @@ impl Vmm {
.map(|_| ApiResponsePayload::Empty);
sender.send(response).map_err(Error::ApiResponseSend)?;
}
ApiRequest::VmAddFs(add_fs_data, sender) => {
let response = self
.vm_add_fs(add_fs_data.as_ref().clone())
.map_err(ApiError::VmAddFs)
.map(|_| ApiResponsePayload::Empty);
sender.send(response).map_err(Error::ApiResponseSend)?;
}
ApiRequest::VmAddPmem(add_pmem_data, sender) => {
let response = self
.vm_add_pmem(add_pmem_data.as_ref().clone())