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Merge pull request #101862 from jsafrane/fix-fc-detach-retry

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Retry detaching FibreChannel volume few times
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Kubernetes Prow Robot 2021-05-27 07:14:23 -07:00 committed by GitHub
commit 81e159f0b0
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1 changed files with 22 additions and 6 deletions
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28
pkg/volume/fc/attacher.go
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@ -23,13 +23,13 @@ import (
"strings" "strings"
"time" "time"
"k8s.io/klog/v2"
"k8s.io/mount-utils"
v1 "k8s.io/api/core/v1" v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/types" "k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/klog/v2"
"k8s.io/kubernetes/pkg/volume" "k8s.io/kubernetes/pkg/volume"
volumeutil "k8s.io/kubernetes/pkg/volume/util" volumeutil "k8s.io/kubernetes/pkg/volume/util"
"k8s.io/mount-utils"
) )
type fcAttacher struct { type fcAttacher struct {
@ -172,12 +172,28 @@ func (detacher *fcDetacher) UnmountDevice(deviceMountPath string) error {
if devName == "" { if devName == "" {
return nil return nil
} }
unMounter := volumeSpecToUnmounter(detacher.mounter, detacher.host) unMounter := volumeSpecToUnmounter(detacher.mounter, detacher.host)
err = detacher.manager.DetachDisk(*unMounter, devName) // The device is unmounted now. If UnmountDevice was retried, GetDeviceNameFromMount
// won't find any mount and won't return DetachDisk below.
// Therefore implement our own retry mechanism here.
// E.g. DetachDisk sometimes fails to flush a multipath device with "device is busy" when it was
// just unmounted.
// 2 minutes should be enough within 6 minute force detach timeout.
var detachError error
err = wait.PollImmediate(10*time.Second, 2*time.Minute, func() (bool, error) {
detachError = detacher.manager.DetachDisk(*unMounter, devName)
if detachError != nil {
klog.V(4).Infof("fc: failed to detach disk %s (%s): %v", devName, deviceMountPath, detachError)
return false, nil
}
return true, nil
})
if err != nil { if err != nil {
return fmt.Errorf("fc: failed to detach disk: %s\nError: %v", devName, err) return fmt.Errorf("fc: failed to detach disk: %s: %v", devName, detachError)
} }
klog.V(4).Infof("fc: successfully detached disk: %s", devName)
klog.V(2).Infof("fc: successfully detached disk: %s", devName)
return nil return nil
} }