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Fix iSCSI storage plugin cleanup in block volumes

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This commit is contained in:
Fabio Bertinatto 2019-07-16 15:11:31 +02:00
parent 8e3a2f2a5b
commit 80652c8d37
3 changed files with 29 additions and 23 deletions
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7
pkg/volume/iscsi/iscsi.go
View File

@ -280,6 +280,7 @@ type iscsiDisk struct {
Portals []string
Iqn string
Lun string
InitIface string
Iface string
chapDiscovery bool
chapSession bool
@ -551,12 +552,18 @@ func createISCSIDisk(spec *volume.Spec, podUID types.UID, plugin *iscsiPlugin, m
return nil, err
}
initIface := iface
if initiatorName != "" {
iface = bkportal[0] + ":" + spec.Name()
}
return &iscsiDisk{
podUID: podUID,
VolName: spec.Name(),
Portals: bkportal,
Iqn: iqn,
Lun: lun,
InitIface: initIface,
Iface: iface,
chapDiscovery: chapDiscovery,
chapSession: chapSession,

33
pkg/volume/iscsi/iscsi_util.go
View File

@ -296,9 +296,9 @@ func (util *ISCSIUtil) AttachDisk(b iscsiDiskMounter) (string, error) {
var iscsiTransport string
var lastErr error
out, err := b.exec.Run("iscsiadm", "-m", "iface", "-I", b.Iface, "-o", "show")
out, err := b.exec.Run("iscsiadm", "-m", "iface", "-I", b.InitIface, "-o", "show")
if err != nil {
klog.Errorf("iscsi: could not read iface %s error: %s", b.Iface, string(out))
klog.Errorf("iscsi: could not read iface %s error: %s", b.InitIface, string(out))
return "", err
}
@ -306,17 +306,13 @@ func (util *ISCSIUtil) AttachDisk(b iscsiDiskMounter) (string, error) {
bkpPortal := b.Portals
// create new iface and copy parameters from pre-configured iface to the created iface
// If the initiator name was set, the iface isn't created yet,
// so create it and copy parameters from the pre-configured one
if b.InitiatorName != "" {
// new iface name is <target portal>:<volume name>
newIface := bkpPortal[0] + ":" + b.VolName
err = cloneIface(b, newIface)
if err != nil {
klog.Errorf("iscsi: failed to clone iface: %s error: %v", b.Iface, err)
if err = cloneIface(b); err != nil {
klog.Errorf("iscsi: failed to clone iface: %s error: %v", b.InitIface, err)
return "", err
}
// update iface name
b.Iface = newIface
}
// Lock the target while we login to avoid races between 2 volumes that share the same
@ -860,10 +856,13 @@ func parseIscsiadmShow(output string) (map[string]string, error) {
return params, nil
}
func cloneIface(b iscsiDiskMounter, newIface string) error {
func cloneIface(b iscsiDiskMounter) error {
var lastErr error
if b.InitIface == b.Iface {
return fmt.Errorf("iscsi: cannot clone iface with same name: %s", b.InitIface)
}
// get pre-configured iface records
out, err := b.exec.Run("iscsiadm", "-m", "iface", "-I", b.Iface, "-o", "show")
out, err := b.exec.Run("iscsiadm", "-m", "iface", "-I", b.InitIface, "-o", "show")
if err != nil {
lastErr = fmt.Errorf("iscsi: failed to show iface records: %s (%v)", string(out), err)
return lastErr
@ -877,11 +876,11 @@ func cloneIface(b iscsiDiskMounter, newIface string) error {
// update initiatorname
params["iface.initiatorname"] = b.InitiatorName
// create new iface
out, err = b.exec.Run("iscsiadm", "-m", "iface", "-I", newIface, "-o", "new")
out, err = b.exec.Run("iscsiadm", "-m", "iface", "-I", b.Iface, "-o", "new")
if err != nil {
exit, ok := err.(utilexec.ExitError)
if ok && exit.ExitStatus() == iscsiadmErrorSessExists {
klog.Infof("iscsi: there is a session already logged in with iface %s", newIface)
klog.Infof("iscsi: there is a session already logged in with iface %s", b.Iface)
} else {
lastErr = fmt.Errorf("iscsi: failed to create new iface: %s (%v)", string(out), err)
return lastErr
@ -889,10 +888,10 @@ func cloneIface(b iscsiDiskMounter, newIface string) error {
}
// update new iface records
for key, val := range params {
_, err = b.exec.Run("iscsiadm", "-m", "iface", "-I", newIface, "-o", "update", "-n", key, "-v", val)
_, err = b.exec.Run("iscsiadm", "-m", "iface", "-I", b.Iface, "-o", "update", "-n", key, "-v", val)
if err != nil {
b.exec.Run("iscsiadm", "-m", "iface", "-I", newIface, "-o", "delete")
lastErr = fmt.Errorf("iscsi: failed to update iface records: %s (%v). iface(%s) will be used", string(out), err, b.Iface)
b.exec.Run("iscsiadm", "-m", "iface", "-I", b.Iface, "-o", "delete")
lastErr = fmt.Errorf("iscsi: failed to update iface records: %s (%v). iface(%s) will be used", string(out), err, b.InitIface)
break
}
}

12
pkg/volume/iscsi/iscsi_util_test.go
View File

@ -276,11 +276,11 @@ func TestClonedIface(t *testing.T) {
plugin := plugins[0]
fakeMounter := iscsiDiskMounter{
iscsiDisk: &iscsiDisk{
Iface: "192.168.1.10:pv0001",
plugin: plugin.(*iscsiPlugin)},
exec: fakeExec,
}
newIface := "192.168.1.10:pv0001"
cloneIface(fakeMounter, newIface)
cloneIface(fakeMounter)
if cmdCount != 4 {
t.Errorf("expected 4 CombinedOutput() calls, got %d", cmdCount)
}
@ -305,11 +305,11 @@ func TestClonedIfaceShowError(t *testing.T) {
plugin := plugins[0]
fakeMounter := iscsiDiskMounter{
iscsiDisk: &iscsiDisk{
Iface: "192.168.1.10:pv0001",
plugin: plugin.(*iscsiPlugin)},
exec: fakeExec,
}
newIface := "192.168.1.10:pv0001"
cloneIface(fakeMounter, newIface)
cloneIface(fakeMounter)
if cmdCount != 1 {
t.Errorf("expected 1 CombinedOutput() calls, got %d", cmdCount)
}
@ -350,11 +350,11 @@ func TestClonedIfaceUpdateError(t *testing.T) {
plugin := plugins[0]
fakeMounter := iscsiDiskMounter{
iscsiDisk: &iscsiDisk{
Iface: "192.168.1.10:pv0001",
plugin: plugin.(*iscsiPlugin)},
exec: fakeExec,
}
newIface := "192.168.1.10:pv0001"
cloneIface(fakeMounter, newIface)
cloneIface(fakeMounter)
if cmdCount != 5 {
t.Errorf("expected 5 CombinedOutput() calls, got %d", cmdCount)
}