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Merge pull request #41458 from humblec/iscsi-nodisk-conflict

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Automatic merge from submit-queue

Adjust nodiskconflict support based on iscsi multipath.

With the multipath support is in place, to declare whether both iscsi disks are same, we need to only depend on IQN.

Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
This commit is contained in:
Kubernetes Submit Queue 2017-02-20 03:54:41 -08:00 committed by GitHub
commit ba6dca94bc
2 changed files with 8 additions and 18 deletions
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18
plugin/pkg/scheduler/algorithm/predicates/predicates.go
View File

@ -21,7 +21,6 @@ import (
"fmt" "fmt"
"math/rand" "math/rand"
"strconv" "strconv"
"strings"
"sync" "sync"
"time" "time"
@ -131,21 +130,12 @@ func isVolumeConflict(volume v1.Volume, pod *v1.Pod) bool {
} }
if volume.ISCSI != nil && existingVolume.ISCSI != nil { if volume.ISCSI != nil && existingVolume.ISCSI != nil {
iqn, lun, target := volume.ISCSI.IQN, volume.ISCSI.Lun, volume.ISCSI.TargetPortal iqn := volume.ISCSI.IQN
eiqn, elun, etarget := existingVolume.ISCSI.IQN, existingVolume.ISCSI.Lun, existingVolume.ISCSI.TargetPortal eiqn := existingVolume.ISCSI.IQN
if !strings.Contains(target, ":") { // two ISCSI volumes are same, if they share the same iqn. As iscsi volumes are of type
target = target + ":3260"
}
if !strings.Contains(etarget, ":") {
etarget = etarget + ":3260"
}
lun1 := strconv.Itoa(int(lun))
elun1 := strconv.Itoa(int(elun))
// two ISCSI volumes are same, if they share the same iqn, lun and target. As iscsi volumes are of type
// RWO or ROX, we could permit only one RW mount. Same iscsi volume mounted by multiple Pods // RWO or ROX, we could permit only one RW mount. Same iscsi volume mounted by multiple Pods
// conflict unless all other pods mount as read only. // conflict unless all other pods mount as read only.
if iqn == eiqn && lun1 == elun1 && target == etarget && !(volume.ISCSI.ReadOnly && existingVolume.ISCSI.ReadOnly) { if iqn == eiqn && !(volume.ISCSI.ReadOnly && existingVolume.ISCSI.ReadOnly) {
return true return true
} }
} }

8
plugin/pkg/scheduler/algorithm/predicates/predicates_test.go
View File

@ -740,7 +740,7 @@ func TestISCSIDiskConflicts(t *testing.T) {
VolumeSource: v1.VolumeSource{ VolumeSource: v1.VolumeSource{
ISCSI: &v1.ISCSIVolumeSource{ ISCSI: &v1.ISCSIVolumeSource{
TargetPortal: "127.0.0.1:3260", TargetPortal: "127.0.0.1:3260",
IQN: "iqn.2014-12.server:storage.target01", IQN: "iqn.2016-12.server:storage.target01",
FSType: "ext4", FSType: "ext4",
Lun: 0, Lun: 0,
}, },
@ -753,10 +753,10 @@ func TestISCSIDiskConflicts(t *testing.T) {
{ {
VolumeSource: v1.VolumeSource{ VolumeSource: v1.VolumeSource{
ISCSI: &v1.ISCSIVolumeSource{ ISCSI: &v1.ISCSIVolumeSource{
TargetPortal: "127.0.0.2:3260", TargetPortal: "127.0.0.1:3260",
IQN: "iqn.2014-12.server:storage.target01", IQN: "iqn.2017-12.server:storage.target01",
FSType: "ext4", FSType: "ext4",
Lun: 1, Lun: 0,
}, },
}, },
}, },