func checkCPUCompat(srcCmd, dstCmd cmd.Cmd) error {
// Dump
_, _, err := srcCmd.Run("sudo", "criu", "cpuinfo", "dump")
if _, ok := err.(*ssh.ExitError); ok {
return fmt.Errorf("Error dumping CPU info")
} else if _, ok := err.(*exec.ExitError); ok {
return fmt.Errorf("Error dumping CPU info")
} else if err != nil {
return fmt.Errorf("Connection error: %s ", err)
}
// Copy
err = cmd.Scp(srcCmd.URL("./cpuinfo.img"), dstCmd.URL("."))
if _, ok := err.(*ssh.ExitError); ok {
return fmt.Errorf("Error copying dump image")
} else if _, ok := err.(*exec.ExitError); ok {
return fmt.Errorf("Error copying dump image")
} else if err != nil {
return fmt.Errorf("Connection error: %s ", err)
}
// Check
_, _, err = srcCmd.Run("sudo", "criu", "cpuinfo", "check")
if _, ok := err.(*ssh.ExitError); ok {
return fmt.Errorf("Error checking CPU info")
} else if _, ok := err.(*exec.ExitError); ok {
return fmt.Errorf("Error checking CPU info")
} else if err != nil {
return fmt.Errorf("Connection error: %s ", err)
}
return nil
}
var downtime time.Duration
if c.Bool("pre-dump") {
// Process pre-dump
predumpPath := fmt.Sprintf("%s/images/0", srcUrl.Path)
prepareDir(src, predumpPath)
checkpoint(src, containerId, predumpPath, true)
srcTarFile := fmt.Sprintf("%s/predump.tar.gz", srcUrl.Path)
prepareTar(src, srcTarFile, predumpPath)
prepareDir(dst, fmt.Sprintf("%s/images/0", dstUrl.Path))
log.Println("Copying predump image to dst")
err := cmd.Scp(src.URL(srcTarFile), dst.URL(fmt.Sprintf("%s/images/0", dstUrl.Path)))
if err != nil {
log.Fatal("Error copying predump image files to dst", err)
}
dstTarFile := fmt.Sprintf("%s/images/0/predump.tar.gz", dstUrl.Path)
unpackTar(dst, dstTarFile, fmt.Sprintf("%s/images/0", dstUrl.Path))
// Process final image
migrateStart = time.Now()
imagesPath = fmt.Sprintf("%s/images/1", srcUrl.Path)
log.Println("Performing the checkpoint")
_, _, err = src.Run("sudo", "runc", "--id", containerId, "checkpoint", "--image-path", imagesPath, "--prev-images-dir", "../0", "--track-mem")
if err != nil {
log.Fatal("Error performing checkpoint:", err)