Update README.md
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Andy Zhang
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@ -99,7 +99,7 @@ Filesystem Size Used Avail Use% Mounted on
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</details>
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#### Notes
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If `reclaimPolicy` is set as `Delete` in [local volume storage class](https://github.com/Azure/kubernetes-volume-drivers/blob/6846c13ebc6a8d8682f6265ae4ae588857de31ab/local/local-pv-storageclass.yaml#L8), data will be cleaned up after PVC deleted, local volume PV would be in `Released` status, after around 5min by default, PV status would be changed to `Bound`, user could tune [minResyncPeriod](https://github.com/kubernetes-sigs/sig-storage-local-static-provisioner/blob/master/docs/provisioner.md#configuration) value to make PV status refresh more quickly.
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If `reclaimPolicy` is set as `Delete` in [local volume storage class](https://github.com/Azure/kubernetes-volume-drivers/blob/6846c13ebc6a8d8682f6265ae4ae588857de31ab/local/local-pv-storageclass.yaml#L8), data will be cleaned up after PVC deleted, local volume PV would be in `Released` status, after around 3 minutes, PV status would be changed to `Bound`, user could tune [minResyncPeriod](https://github.com/kubernetes-sigs/sig-storage-local-static-provisioner/blob/master/docs/provisioner.md#configuration) value to make PV status refresh more quickly.
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#### Troubleshooting
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<details><summary>get local-volume-provisioner logs</summary>
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@ -111,29 +111,32 @@ kubectl logs local-volume-provisioner-m8fbj -n kube-system
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<details><summary>example logs</summary>
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```
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I0530 12:43:11.874618 1 common.go:344] StorageClass "local-disk" configured with MountDir "/dev", HostDir "/dev", VolumeMode "Filesystem", FsType "xfs", BlockCleanerCommand ["/scripts/shred.sh" "2"], NamePattern "nvme*"
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I0530 12:43:11.874684 1 main.go:63] Loaded configuration: {StorageClassConfig:map[local-disk:{HostDir:/dev MountDir:/dev BlockCleanerCommand:[/scripts/shred.sh 2] VolumeMode:Filesystem FsType:xfs NamePattern:nvme*}] NodeLabelsForPV:[] UseAlphaAPI:false UseJobForCleaning:false MinResyncPeriod:{Duration:5m0s} UseNodeNameOnly:false LabelsForPV:map[] SetPVOwnerRef:false}
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I0530 12:43:11.874713 1 main.go:64] Ready to run...
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W0530 12:43:11.874724 1 main.go:73] MY_NAMESPACE environment variable not set, will be set to default.
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W0530 12:43:11.874737 1 main.go:79] JOB_CONTAINER_IMAGE environment variable not set.
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I0530 12:43:11.874963 1 common.go:407] Creating client using in-cluster config
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I0530 12:43:11.945316 1 main.go:85] Starting controller
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I0530 12:43:11.945354 1 main.go:101] Starting metrics server at :8080
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I0530 12:43:11.945398 1 controller.go:47] Initializing volume cache
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I0530 12:43:11.945607 1 mount_linux.go:163] Detected OS without systemd
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I0530 12:43:12.045905 1 controller.go:111] Controller started
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I0530 12:43:12.046863 1 discovery.go:287] file(termination-log) under(/dev) does not match pattern(nvme*)
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I0530 12:43:12.046979 1 discovery.go:287] file(sdb1) under(/dev) does not match pattern(nvme*)
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I0530 12:43:12.046991 1 discovery.go:287] file(dvd) under(/dev) does not match pattern(nvme*)
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I1205 11:53:42.771500 1 cache.go:64] Updated pv "local-pv-8739a5e2" to cache
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I1205 11:53:45.552542 1 deleter.go:195] Start cleanup for pv local-pv-8739a5e2
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I1205 11:53:45.552944 1 deleter.go:275] Deleting PV block volume "local-pv-8739a5e2" device hostpath "/dev/sdb1", mountpath "/dev/sdb1"
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I1205 11:53:45.624199 1 deleter.go:319] Cleanup pv "local-pv-8739a5e2": StderrBuf - "shred: /dev/sdb1: pass 1/3 (random)..."
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I1205 11:53:50.007271 1 deleter.go:319] Cleanup pv "local-pv-8739a5e2": StderrBuf - "shred: /dev/sdb1: pass 1/3 (random)...564MiB/16GiB 3%"
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I1205 11:53:55.006489 1 deleter.go:319] Cleanup pv "local-pv-8739a5e2": StderrBuf - "shred: /dev/sdb1: pass 1/3 (random)...1.1GiB/16GiB 7%"
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I1205 11:54:00.017742 1 deleter.go:319] Cleanup pv "local-pv-8739a5e2": StderrBuf - "shred: /dev/sdb1: pass 1/3 (random)...1.7GiB/16GiB 10%"
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I1205 11:54:05.006582 1 deleter.go:319] Cleanup pv "local-pv-8739a5e2": StderrBuf - "shred: /dev/sdb1: pass 1/3 (random)...2.1GiB/16GiB 13%"
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I0321 11:21:50.707052 1 common.go:348] StorageClass "local-disk" configured with MountDir "/dev", HostDir "/dev", VolumeMode "Filesystem", FsType "ext4", BlockCleanerCommand ["/scripts/quick_reset.sh"], NamePattern "nvme*"
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I0321 11:21:50.707144 1 main.go:66] Loaded configuration: {StorageClassConfig:map[local-disk:{HostDir:/dev MountDir:/dev BlockCleanerCommand:[/scripts/quick_reset.sh] VolumeMode:Filesystem FsType:ext4 NamePattern:nvme*}] NodeLabelsForPV:[] UseAlphaAPI:false UseJobForCleaning:false MinResyncPeriod:{Duration:5m0s} UseNodeNameOnly:false LabelsForPV:map[] SetPVOwnerRef:false}
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I0321 11:21:50.707174 1 main.go:67] Ready to run...
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W0321 11:21:50.707180 1 main.go:76] MY_NAMESPACE environment variable not set, will be set to default.
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W0321 11:21:50.707185 1 main.go:82] JOB_CONTAINER_IMAGE environment variable not set.
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I0321 11:21:50.707320 1 common.go:425] Creating client using in-cluster config
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I0321 11:21:50.751109 1 main.go:88] Starting controller
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I0321 11:21:50.751161 1 main.go:105] Starting metrics server at :8080
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I0321 11:21:50.751236 1 controller.go:47] Initializing volume cache
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I0321 11:21:50.752642 1 mount_linux.go:163] Detected OS without systemd
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I0321 11:21:50.855049 1 controller.go:116] Controller started
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I0321 11:21:50.855755 1 discovery.go:423] Found new volume at host path "/dev/nvme1n1" with capacity 1920383410176, creating Local PV "local-pv-1de3995e", required volumeMode "Filesystem"
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I0321 11:21:50.873281 1 discovery.go:457] Created PV "local-pv-1de3995e" for volume at "/dev/nvme1n1"
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I0321 11:21:50.873346 1 discovery.go:423] Found new volume at host path "/dev/nvme3n1" with capacity 1920383410176, creating Local PV "local-pv-20d38638", required volumeMode "Filesystem"
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I0321 11:21:50.873387 1 cache.go:55] Added pv "local-pv-1de3995e" to cache
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I0321 11:21:50.878969 1 cache.go:55] Added pv "local-pv-20d38638" to cache
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I0321 11:21:50.879557 1 discovery.go:457] Created PV "local-pv-20d38638" for volume at "/dev/nvme3n1"
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I0321 11:21:50.879657 1 discovery.go:423] Found new volume at host path "/dev/nvme0n1" with capacity 1920383410176, creating Local PV "local-pv-2d08f517", required volumeMode "Filesystem"
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I0321 11:21:50.882559 1 cache.go:64] Updated pv "local-pv-1de3995e" to cache
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I0321 11:21:50.885724 1 discovery.go:457] Created PV "local-pv-2d08f517" for volume at "/dev/nvme0n1"
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I0321 11:21:50.885773 1 cache.go:55] Added pv "local-pv-2d08f517" to cache
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I0321 11:21:50.885822 1 discovery.go:423] Found new volume at host path "/dev/nvme2n1" with capacity 1920383410176, creating Local PV "local-pv-df7e5119", required volumeMode "Filesystem"
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I0321 11:21:50.888347 1 cache.go:64] Updated pv "local-pv-20d38638" to cache
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I0321 11:21:50.892143 1 cache.go:55] Added pv "local-pv-df7e5119" to cache
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I0321 11:21:50.892260 1 discovery.go:457] Created PV "local-pv-df7e5119" for volume at "/dev/nvme2n1"
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E0321 11:21:50.892413 1 discovery.go:221] Failed to discover local volumes: 4 error(s) while discovering volumes: [Skipping file "/dev/nvme3": not a directory nor block device Skipping file "/dev/nvme2": not a directory nor block device Skipping file "/dev/nvme1": not a directory nor block device Skipping file "/dev/nvme0": not a directory nor block device]
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```
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</details>
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