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Merge pull request #100404 from gnufied/reduce-vsphere-volume-length

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reduce volume length for vsphere volumes
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Kubernetes Prow Robot 2021-04-08 22:08:49 -07:00 committed by GitHub
commit 67820edf18
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1 changed files with 11 additions and 8 deletions
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19
pkg/volume/vsphere_volume/vsphere_volume_util.go
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@ -25,7 +25,7 @@ import (
"strings"
"time"
"k8s.io/api/core/v1"
v1 "k8s.io/api/core/v1"
cloudprovider "k8s.io/cloud-provider"
volumehelpers "k8s.io/cloud-provider/volume/helpers"
"k8s.io/klog/v2"
@ -67,6 +67,15 @@ const (
ObjectSpaceReservationCapabilityMin = 0
ObjectSpaceReservationCapabilityMax = 100
IopsLimitCapabilityMin = 0
// reduce number of characters in vsphere volume name. The reason for setting length smaller than 255 is because typically
// volume name also becomes part of mount path - /var/lib/kubelet/plugins/kubernetes.io/vsphere-volume/mounts/<name>
// and systemd has a limit of 256 chars in a unit name - https://github.com/systemd/systemd/pull/14294
// so if we subtract the kubelet path prefix from 256, we are left with 191 characters.
// Since datastore name is typically part of volumeName we are choosing a shorter length of 63
// and leaving room of certain characters being escaped etc.
// Given that volume name is typically of the form - pvc-0f13e3ad-97f8-41ab-9392-84562ef40d17.vmdk (45 chars),
// this should still leave plenty of room for clusterName inclusion.
maxVolumeLength = 63
)
var ErrProbeVolume = errors.New("error scanning attached volumes")
@ -97,13 +106,7 @@ func (util *VsphereDiskUtil) CreateVolume(v *vsphereVolumeProvisioner, selectedN
return nil, err
}
volSizeKiB := volSizeMiB * 1024
// reduce number of characters in vsphere volume name. The reason for setting length smaller than 255 is because typically
// volume name also becomes part of mount path - /var/lib/kubelet/plugins/kubernetes.io/vsphere-volume/mounts/<name>
// and systemd has a limit of 256 chars in a unit name - https://github.com/systemd/systemd/pull/14294
// so if we subtract the kubelet path prefix from 256, we are left with 191 characters.
// Since datastore name is typically part of volumeName we are choosing a shorter length of 90
// and leaving room of certain characters being escaped etc.
name := volumeutil.GenerateVolumeName(v.options.ClusterName, v.options.PVName, 90)
name := volumeutil.GenerateVolumeName(v.options.ClusterName, v.options.PVName, maxVolumeLength)
volumeOptions := &vclib.VolumeOptions{
CapacityKB: volSizeKiB,
Tags: *v.options.CloudTags,