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virtio-devices: vhost_user: Fully implement Migratable trait

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All vhost-user devices are now equipped to support migration.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2021-08-04 16:16:54 +02:00 committed by Bo Chen
parent b3f5630c27
commit 9d88e0b417
3 changed files with 161 additions and 8 deletions
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57
virtio-devices/src/vhost_user/blk.rs
View File

@ -29,9 +29,10 @@ use virtio_bindings::bindings::virtio_blk::{
VIRTIO_BLK_F_GEOMETRY, VIRTIO_BLK_F_MQ, VIRTIO_BLK_F_RO, VIRTIO_BLK_F_SEG_MAX,
VIRTIO_BLK_F_SIZE_MAX, VIRTIO_BLK_F_TOPOLOGY, VIRTIO_BLK_F_WRITE_ZEROES,
};
use vm_memory::{ByteValued, GuestAddressSpace, GuestMemoryAtomic};
use vm_memory::{Address, ByteValued, GuestAddressSpace, GuestMemory, GuestMemoryAtomic};
use vm_migration::{
Migratable, MigratableError, Pausable, Snapshot, Snapshottable, Transportable, VersionMapped,
protocol::MemoryRangeTable, Migratable, MigratableError, Pausable, Snapshot, Snapshottable,
Transportable, VersionMapped,
};
use vmm_sys_util::eventfd::EventFd;
@ -399,4 +400,54 @@ impl Snapshottable for Blk {
}
}
impl Transportable for Blk {}
impl Migratable for Blk {}
impl Migratable for Blk {
fn start_dirty_log(&mut self) -> std::result::Result<(), MigratableError> {
if let Some(guest_memory) = &self.guest_memory {
let last_ram_addr = guest_memory.memory().last_addr().raw_value();
self.vu
.lock()
.unwrap()
.start_dirty_log(last_ram_addr)
.map_err(|e| {
MigratableError::MigrateStart(anyhow!(
"Error starting migration for vhost-user-blk backend: {:?}",
e
))
})
} else {
Err(MigratableError::MigrateStart(anyhow!(
"Missing guest memory"
)))
}
}
fn stop_dirty_log(&mut self) -> std::result::Result<(), MigratableError> {
self.vu.lock().unwrap().stop_dirty_log().map_err(|e| {
MigratableError::MigrateStop(anyhow!(
"Error stopping migration for vhost-user-blk backend: {:?}",
e
))
})
}
fn dirty_log(&mut self) -> std::result::Result<MemoryRangeTable, MigratableError> {
if let Some(guest_memory) = &self.guest_memory {
let last_ram_addr = guest_memory.memory().last_addr().raw_value();
self.vu
.lock()
.unwrap()
.dirty_log(last_ram_addr)
.map_err(|e| {
MigratableError::MigrateDirtyRanges(anyhow!(
"Error retrieving dirty ranges from vhost-user-blk backend: {:?}",
e
))
})
} else {
Err(MigratableError::MigrateDirtyRanges(anyhow!(
"Missing guest memory"
)))
}
}
}

55
virtio-devices/src/vhost_user/fs.rs
View File

@ -32,7 +32,8 @@ use vm_memory::{
Address, ByteValued, GuestAddress, GuestAddressSpace, GuestMemory, GuestMemoryAtomic,
};
use vm_migration::{
Migratable, MigratableError, Pausable, Snapshot, Snapshottable, Transportable, VersionMapped,
protocol::MemoryRangeTable, Migratable, MigratableError, Pausable, Snapshot, Snapshottable,
Transportable, VersionMapped,
};
use vmm_sys_util::eventfd::EventFd;
@ -680,4 +681,54 @@ impl Snapshottable for Fs {
}
}
impl Transportable for Fs {}
impl Migratable for Fs {}
impl Migratable for Fs {
fn start_dirty_log(&mut self) -> std::result::Result<(), MigratableError> {
if let Some(guest_memory) = &self.guest_memory {
let last_ram_addr = guest_memory.memory().last_addr().raw_value();
self.vu
.lock()
.unwrap()
.start_dirty_log(last_ram_addr)
.map_err(|e| {
MigratableError::MigrateStart(anyhow!(
"Error starting migration for vhost-user-fs backend: {:?}",
e
))
})
} else {
Err(MigratableError::MigrateStart(anyhow!(
"Missing guest memory"
)))
}
}
fn stop_dirty_log(&mut self) -> std::result::Result<(), MigratableError> {
self.vu.lock().unwrap().stop_dirty_log().map_err(|e| {
MigratableError::MigrateStop(anyhow!(
"Error stopping migration for vhost-user-fs backend: {:?}",
e
))
})
}
fn dirty_log(&mut self) -> std::result::Result<MemoryRangeTable, MigratableError> {
if let Some(guest_memory) = &self.guest_memory {
let last_ram_addr = guest_memory.memory().last_addr().raw_value();
self.vu
.lock()
.unwrap()
.dirty_log(last_ram_addr)
.map_err(|e| {
MigratableError::MigrateDirtyRanges(anyhow!(
"Error retrieving dirty ranges from vhost-user-fs backend: {:?}",
e
))
})
} else {
Err(MigratableError::MigrateDirtyRanges(anyhow!(
"Missing guest memory"
)))
}
}
}

57
virtio-devices/src/vhost_user/net.rs
View File

@ -30,9 +30,10 @@ use virtio_bindings::bindings::virtio_net::{
VIRTIO_NET_F_HOST_ECN, VIRTIO_NET_F_HOST_TSO4, VIRTIO_NET_F_HOST_TSO6, VIRTIO_NET_F_HOST_UFO,
VIRTIO_NET_F_MAC, VIRTIO_NET_F_MRG_RXBUF,
};
use vm_memory::{ByteValued, GuestAddressSpace, GuestMemoryAtomic};
use vm_memory::{Address, ByteValued, GuestAddressSpace, GuestMemory, GuestMemoryAtomic};
use vm_migration::{
Migratable, MigratableError, Pausable, Snapshot, Snapshottable, Transportable, VersionMapped,
protocol::MemoryRangeTable, Migratable, MigratableError, Pausable, Snapshot, Snapshottable,
Transportable, VersionMapped,
};
use vmm_sys_util::eventfd::EventFd;
@ -486,4 +487,54 @@ impl Snapshottable for Net {
}
}
impl Transportable for Net {}
impl Migratable for Net {}
impl Migratable for Net {
fn start_dirty_log(&mut self) -> std::result::Result<(), MigratableError> {
if let Some(guest_memory) = &self.guest_memory {
let last_ram_addr = guest_memory.memory().last_addr().raw_value();
self.vu
.lock()
.unwrap()
.start_dirty_log(last_ram_addr)
.map_err(|e| {
MigratableError::MigrateStart(anyhow!(
"Error starting migration for vhost-user-blk backend: {:?}",
e
))
})
} else {
Err(MigratableError::MigrateStart(anyhow!(
"Missing guest memory"
)))
}
}
fn stop_dirty_log(&mut self) -> std::result::Result<(), MigratableError> {
self.vu.lock().unwrap().stop_dirty_log().map_err(|e| {
MigratableError::MigrateStop(anyhow!(
"Error stopping migration for vhost-user-blk backend: {:?}",
e
))
})
}
fn dirty_log(&mut self) -> std::result::Result<MemoryRangeTable, MigratableError> {
if let Some(guest_memory) = &self.guest_memory {
let last_ram_addr = guest_memory.memory().last_addr().raw_value();
self.vu
.lock()
.unwrap()
.dirty_log(last_ram_addr)
.map_err(|e| {
MigratableError::MigrateDirtyRanges(anyhow!(
"Error retrieving dirty ranges from vhost-user-blk backend: {:?}",
e
))
})
} else {
Err(MigratableError::MigrateDirtyRanges(anyhow!(
"Missing guest memory"
)))
}
}
}