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Add state dir support to Qemu runner.

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Modelled on the Hyperkit runner, for now only used for the disk.

This is one step closer to having project/kubernetes/boot.sh work on Linux.

Signed-off-by: Ian Campbell <ian.campbell@docker.com>
This commit is contained in:
Ian Campbell 2017-06-13 10:45:43 +01:00
parent c47b2c770c
commit a09090e6cd
1 changed files with 11 additions and 1 deletions
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12
src/cmd/linuxkit/run_qemu.go
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@ -55,6 +55,9 @@ func runQemu(args []string) {
isoBoot := flags.Bool("iso", false, "Boot image is an ISO") isoBoot := flags.Bool("iso", false, "Boot image is an ISO")
kernelBoot := flags.Bool("kernel", false, "Boot image is kernel+initrd+cmdline 'path'-kernel/-initrd/-cmdline") kernelBoot := flags.Bool("kernel", false, "Boot image is kernel+initrd+cmdline 'path'-kernel/-initrd/-cmdline")
// State flags
state := flags.String("state", "", "Path to directory to keep VM state in")
// Paths and settings for disks // Paths and settings for disks
var disks Disks var disks Disks
flags.Var(&disks, "disk", "Disk config, may be repeated. [file=]path[,size=1G][,format=qcow2]") flags.Var(&disks, "disk", "Disk config, may be repeated. [file=]path[,size=1G][,format=qcow2]")
@ -110,6 +113,13 @@ func runQemu(args []string) {
} }
} }
if *state == "" {
*state = prefix + "-state"
}
if err := os.MkdirAll(*state, 0755); err != nil {
log.Fatalf("Could not create state directory: %v", err)
}
for i, d := range disks { for i, d := range disks {
id := "" id := ""
if i != 0 { if i != 0 {
@ -119,7 +129,7 @@ func runQemu(args []string) {
d.Format = "qcow2" d.Format = "qcow2"
} }
if d.Size != 0 && d.Path == "" { if d.Size != 0 && d.Path == "" {
d.Path = prefix + "-disk" + id + ".img" d.Path = filepath.Join(*state, "disk"+id+".img")
} }
if d.Path == "" { if d.Path == "" {
log.Fatalf("disk specified with no size or name") log.Fatalf("disk specified with no size or name")