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blk-dev: hotplug readonly if applicable

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If a block based volume is read only, let's make sure we add as a RO
device

Fixes: #1246

Signed-off-by: Eric Ernst <eric.g.ernst@gmail.com>
This commit is contained in:
Eric Ernst 2021-01-12 14:30:19 -08:00 committed by Eric Ernst
parent 12777b26e4
commit 789fd7c1c6
4 changed files with 12 additions and 7 deletions
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1
src/runtime/virtcontainers/container.go
View File

@ -669,6 +669,7 @@ func (c *Container) createBlockDevices() error {
DevType: "b",
Major: int64(unix.Major(stat.Rdev)),
Minor: int64(unix.Minor(stat.Rdev)),
ReadOnly: m.ReadOnly,
}
// check whether source can be used as a pmem device
} else if di, err = config.PmemDeviceInfo(m.Source, m.Destination); err != nil {

3
src/runtime/virtcontainers/device/config/config.go
View File

@ -114,6 +114,9 @@ type DeviceInfo struct {
// for a nvdimm device in the guest.
Pmem bool
// If applicable, should this device be considered RO
ReadOnly bool
// ColdPlug specifies whether the device must be cold plugged (true)
// or hot plugged (false).
ColdPlug bool

11
src/runtime/virtcontainers/device/drivers/block.go
View File

@ -61,11 +61,12 @@ func (device *BlockDevice) Attach(devReceiver api.DeviceReceiver) (err error) {
}
drive := &config.BlockDrive{
File: device.DeviceInfo.HostPath,
Format: "raw",
ID: utils.MakeNameID("drive", device.DeviceInfo.ID, maxDevIDSize),
Index: index,
Pmem: device.DeviceInfo.Pmem,
File: device.DeviceInfo.HostPath,
Format: "raw",
ID: utils.MakeNameID("drive", device.DeviceInfo.ID, maxDevIDSize),
Index: index,
Pmem: device.DeviceInfo.Pmem,
ReadOnly: device.DeviceInfo.ReadOnly,
}
if fs, ok := device.DeviceInfo.DriverOptions["fstype"]; ok {

4
src/runtime/virtcontainers/qemu.go
View File

@ -1233,9 +1233,9 @@ func (q *qemu) hotplugAddBlockDevice(drive *config.BlockDrive, op operation, dev
}
if q.config.BlockDeviceCacheSet {
err = q.qmpMonitorCh.qmp.ExecuteBlockdevAddWithCache(q.qmpMonitorCh.ctx, drive.File, drive.ID, q.config.BlockDeviceCacheDirect, q.config.BlockDeviceCacheNoflush, false)
err = q.qmpMonitorCh.qmp.ExecuteBlockdevAddWithCache(q.qmpMonitorCh.ctx, drive.File, drive.ID, q.config.BlockDeviceCacheDirect, q.config.BlockDeviceCacheNoflush, drive.ReadOnly)
} else {
err = q.qmpMonitorCh.qmp.ExecuteBlockdevAdd(q.qmpMonitorCh.ctx, drive.File, drive.ID, false)
err = q.qmpMonitorCh.qmp.ExecuteBlockdevAdd(q.qmpMonitorCh.ctx, drive.File, drive.ID, drive.ReadOnly)
}
if err != nil {
return err