iSCSI volume plugin persists volume metadata into global mount directory,
before it is mounted. Content of the directory is shadowed by the volume
mount. Therefore kubelet should not write metadata to the directory when a
second pod uses the same volume on the same node.
1. The metadata were already persisted before mounting the volume for the
first pod.
2. The global mount directory has the volume mounted, so any write there
would write to the volume, which is undesirable.
Ignore stderr of rbd info --format=json as without a ceph.conf it will
print messages about no configuration onto stderr which break the
json parsing.
The actual json information the function wants is always on stdout.
Closes: gh-88643
Signed-off-by: Julian Taylor <juliantaylor108@gmail.com>
We need to ensure that when converting resource.Quantity
to int64 it does not overflow and if it does, then an error is
returned back to the use rather than attempting expansion and
provisioning operations with scaled value.
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)
When NodeStage times out and does not prepare destination device and user
deletes corresponding pod, the driver may continue staging the volume in
background. Kubernetes must call NodeUnstage to "cancel" this operation.
Therefore TearDownDevice should be called even when the target directory
does not exist (yet).
When NodePublish times out and user deletes corresponding pod, the driver
may continue publishing the volume. In order to "cancel" this operation,
Kubernetes must issue NodeUnpublish and wait until it finishes.
Therefore, NodeUnpublish should be called even if the target directory
(created by the driver) does not exist yet.
Volume mount should be marked as uncertain after NodeStage / NodePublish
timeout or similar error, when the driver can continue with the operation in
background.
persistent-disks for each instance type correctly.
Tested: Verified the kubernetes node object shows correct limits for
various instance types (n1-, c2-, e2-).
Extended GetMountMedium function to check if hugetlbfs volume
is mounted with the page size equal to the medium size.
Page size is obtained from the 'pagesize' mount option of the
mounted hugetlbfs volume.
This implementation allows Pod to request multiple hugepage resources
of different size and mount hugepage volumes using storage medium
HugePage-<size>, e.g.
spec:
containers:
resources:
requests:
hugepages-2Mi: 2Mi
hugepages-1Gi: 2Gi
volumeMounts:
- mountPath: /hugepages-2Mi
name: hugepage-2mi
- mountPath: /hugepages-1Gi
name: hugepage-1gi
...
volumes:
- name: hugepage-2mi
emptyDir:
medium: HugePages-2Mi
- name: hugepage-1gi
emptyDir:
medium: HugePages-1Gi
NOTE: This is an alpha feature.
Feature gate HugePageStorageMediumSize must be enabled for it to work.
Filesystem mismatch is a special event. This could indicate
either user has asked for incorrect filesystem or there is a error
from which mount operation can not recover on retry.
Co-Authored-By: Jordan Liggitt <jordan@liggitt.net>
CSI volume plugin creates number of files/directories when processing block
volumes. These files must be cleaned when the plugin is done with the
volume, i.e. at the end on TearDownDevice().
In case of windows, the path package functions such as 'Dir' returns faulty directory path.
For eg: 'path.Dir' on 'c:\var\lib\kubelet\pods' returns '.', where as the result should
have been 'c:\var\lib\kubelet'. The filepath package returns the right values.
