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several improvements

Browse Source 
- drop vfs
 - less hardcoded stuff, use the runtime status
 - Remove things that syscalls dont understand (defaults, auto)

Signed-off-by: Itxaka <itxaka@spectrocloud.com>
This commit is contained in:
Itxaka
2023-02-06 16:20:18 +01:00
parent fcdc2f28b6
commit f98954367f
7 changed files with 125 additions and 39 deletions
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35
pkg/mount/fs.go
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@@ -2,6 +2,8 @@ package mount
import (
"fmt"
"github.com/rs/zerolog"
"github.com/rs/zerolog/log"
"os"
"os/exec"
"path/filepath"
@@ -36,6 +38,7 @@ func appendSlash(path string) string {
// https://github.com/kairos-io/packages/blob/94aa3bef3d1330cb6c6905ae164f5004b6a58b8c/packages/system/dracut/immutable-rootfs/30cos-immutable-rootfs/cos-mount-layout.sh#L129
func baseOverlay(overlay profile.Overlay) (mountOperation, error) {
log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr}).With().Caller().Logger()
if err := os.MkdirAll(overlay.Base, 0700); err != nil {
return mountOperation{}, err
}
@@ -49,26 +52,26 @@ func baseOverlay(overlay profile.Overlay) (mountOperation, error) {
t := dat[0]
switch t {
case "tmpfs":
tmpMount := mount.Mount{Type: "tmpfs", Source: "tmpfs", Options: []string{"defaults", fmt.Sprintf("size=%s", dat[1])}}
tmpMount := mount.Mount{Type: "tmpfs", Source: "tmpfs", Options: []string{fmt.Sprintf("size=%s", dat[1])}}
err := mount.All([]mount.Mount{tmpMount}, overlay.Base)
fstab := mountToStab(tmpMount)
fstab.File = overlay.BackingBase
tmpFstab := mountToStab(tmpMount)
tmpFstab.File = overlay.BackingBase
return mountOperation{
MountOption: tmpMount,
FstabEntry: *fstab,
FstabEntry: *tmpFstab,
Target: overlay.Base,
}, err
case "block":
blockMount := mount.Mount{Type: "auto", Source: dat[1]}
err := mount.All([]mount.Mount{blockMount}, overlay.Base)
fstab := mountToStab(blockMount)
fstab.File = overlay.BackingBase
fstab.MntOps["default"] = ""
tmpFstab := mountToStab(blockMount)
tmpFstab.File = overlay.BackingBase
tmpFstab.MntOps["default"] = ""
return mountOperation{
MountOption: blockMount,
FstabEntry: *fstab,
FstabEntry: *tmpFstab,
Target: overlay.Base,
}, err
default:
@@ -115,12 +118,12 @@ func mountBind(mountpoint, root, stateTarget string) (mountOperation, error) {
},
}
fstab := mountToStab(tmpMount)
fstab.File = fmt.Sprintf("/%s", mountpoint)
fstab.Spec = strings.ReplaceAll(fstab.Spec, root, "")
tmpFstab := mountToStab(tmpMount)
tmpFstab.File = fmt.Sprintf("/%s", mountpoint)
tmpFstab.Spec = strings.ReplaceAll(tmpFstab.Spec, root, "")
return mountOperation{
MountOption: tmpMount,
FstabEntry: *fstab,
FstabEntry: *tmpFstab,
Target: rootMount,
PrepareCallback: func() error {
if err := createIfNotExists(rootMount); err != nil {
@@ -144,6 +147,8 @@ func syncState(src, dst string) error {
// https://github.com/kairos-io/packages/blob/94aa3bef3d1330cb6c6905ae164f5004b6a58b8c/packages/system/dracut/immutable-rootfs/30cos-immutable-rootfs/cos-mount-layout.sh#L145
func mountWithBaseOverlay(mountpoint, root, base string) (mountOperation, error) {
log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr}).With().Caller().Logger()
log.Debug().Str("mountpoint", mountpoint).Str("root", root).Str("base", base).Msg("mount with base overlay")
mountpoint = strings.TrimLeft(mountpoint, "/") // normalize, remove / upfront as we are going to re-use it in subdirs
rootMount := filepath.Join(root, mountpoint)
bindMountPath := strings.ReplaceAll(mountpoint, "/", "-")
@@ -164,14 +169,14 @@ func mountWithBaseOverlay(mountpoint, root, base string) (mountOperation, error)
},
}
fstab := mountToStab(tmpMount)
fstab.File = rootMount
tmpFstab := mountToStab(tmpMount)
tmpFstab.File = rootMount
// TODO: update fstab with x-systemd info
// https://github.com/kairos-io/packages/blob/94aa3bef3d1330cb6c6905ae164f5004b6a58b8c/packages/system/dracut/immutable-rootfs/30cos-immutable-rootfs/cos-mount-layout.sh#L170
return mountOperation{
MountOption: tmpMount,
FstabEntry: *fstab,
FstabEntry: *tmpFstab,
Target: rootMount,
PrepareCallback: func() error {
// Make sure workdir and/or upper exists