In case /var/lib/kubelet is a symlink, "losetup -j <device in
/var/lib/kubelet>" will show the device paths with symlinks fully
evaluated.
Fix the parsing routine and expand symlinks in the path that we want to
find in "losetup -j" output.
As part of externalizing this function to the k8s.io/component-helpers repo,
this commit simplifies the function signature and makes its 2 helpers private
(nodeSelectorRequirementsAsSelector and nodeSelectorRequirementsAsFieldSelector).
Paths do not always have Targets, which means that the previously added powershell
command will return an empty string, causing pods with subpath mounts to fail.
In golang, evalSymlink() does not work if windows disk driver letter is
not assigned. Replace this function with a powershell command to work
around this issue.
Errors from staticcheck:
pkg/volume/azure_dd/azure_common.go:68:2: var winDiskNumFormat is unused (U1000)
pkg/volume/csi/csi_block.go:97:2: field volumeInfo is unused (U1000)
pkg/volume/csi/csi_block_test.go:56:6: func prepareBlockUnmapperTest is unused (U1000)
pkg/volume/csi/csi_client.go:108:2: const initialDuration is unused (U1000)
pkg/volume/csi/csi_client.go:109:2: const factor is unused (U1000)
pkg/volume/csi/csi_client.go:110:2: const steps is unused (U1000)
pkg/volume/csi/csi_client_test.go:83:8: this value of err is never used (SA4006)
pkg/volume/csi/csi_mounter.go:76:2: field options is unused (U1000)
pkg/volume/csi/csi_mounter_test.go:454:13: this value of err is never used (SA4006)
pkg/volume/csi/csi_plugin_test.go:766:16: this value of err is never used (SA4006)
pkg/volume/csi/csi_plugin_test.go:861:13: this value of err is never used (SA4006)
pkg/volume/csi/csi_plugin_test.go:1186:13: this value of err is never used (SA4006)
pkg/volume/csi/csi_plugin_test.go:1249:13: this value of err is never used (SA4006)
pkg/volume/csi/csi_test.go:305:5: the goroutine calls T.Fatalf, which must be called in the same goroutine as the test (SA2002)
pkg/volume/flexvolume/probe_test.go:67:10: this value of err is never used (SA4006)
pkg/volume/iscsi/iscsi_test.go:95:2: field attachCalled is unused (U1000)
pkg/volume/iscsi/iscsi_test.go:96:2: field detachCalled is unused (U1000)
pkg/volume/iscsi/iscsi_test.go:501:24: this value of err is never used (SA4006)
pkg/volume/iscsi/iscsi_util_test.go:159:2: this value of exist is never used (SA4006)
pkg/volume/local/local.go:351:57: argument devicePath is overwritten before first use (SA4009)
pkg/volume/plugins_test.go:119:2: this value of plug is never used (SA4006)
pkg/volume/plugins_test.go:125:2: this value of plug is never used (SA4006)
pkg/volume/quobyte/quobyte.go:474:23: this result of append is never used, except maybe in other appends (SA4010)
pkg/volume/quobyte/quobyte.go:477:23: this result of append is never used, except maybe in other appends (SA4010)
pkg/volume/quobyte/quobyte.go:480:23: this result of append is never used, except maybe in other appends (SA4010)
pkg/volume/rbd/rbd.go:886:2: field adminSecret is unused (U1000)
pkg/volume/rbd/rbd.go:887:2: field adminID is unused (U1000)
pkg/volume/rbd/rbd.go:888:2: field imageFormat is unused (U1000)
pkg/volume/rbd/rbd.go:889:2: field imageFeatures is unused (U1000)
pkg/volume/storageos/storageos.go:302:2: field secretName is unused (U1000)
pkg/volume/storageos/storageos_util_test.go:43:2: field apiAddr is unused (U1000)
pkg/volume/storageos/storageos_util_test.go:44:2: field apiUser is unused (U1000)
pkg/volume/storageos/storageos_util_test.go:45:2: field apiPass is unused (U1000)
pkg/volume/storageos/storageos_util_test.go:46:2: field apiVersion is unused (U1000)
pkg/volume/util/atomic_writer_test.go:756:49: argument err is overwritten before first use (SA4009)
pkg/volume/util/fsquota/common/quota_linux_common.go:37:2: const acct is unused (U1000)
pkg/volume/util/fsquota/common/quota_linux_common.go:38:2: const enforcing is unused (U1000)
pkg/volume/util/fsquota/project.go:168:31: identical expressions on the left and right side of the '==' operator (SA4000)
pkg/volume/util/fsquota/quota_linux.go:306:50: argument poduid is overwritten before first use (SA4009)
pkg/volume/util/fsquota/quota_linux_test.go:558:16: this value of err is never used (SA4006)
pkg/volume/util/subpath/subpath_linux.go:232:81: argument err is overwritten before first use (SA4009)
pkg/volume/util/subpath/subpath_linux_test.go:579:73: argument err is overwritten before first use (SA4009)
