Merge pull request #248 from amankhunt/release-0.8

Release 0.8.2 part 1/3: CHANGELOG, README, Makefile
kubernetes-sigs · Apr 22, 2022 · 997acdf · 997acdf
2 parents bbf12d5 + 9b1b33e
commit 997acdf
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diff --git a/CHANGELOG-0.x.md b/CHANGELOG-0.x.md
@@ -1,3 +1,6 @@
+#v0.8.2
+* Add Idempotent check for mounting node volume ([#246](https://github.com/kubernetes-sigs/aws-fsx-csi-driver/pull/246), [@amankhunt](https://github.com/amankhunt))
+
 # v0.8.1
 * Updating to latest AL2 base image.
 

diff --git a/Makefile b/Makefile
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-VERSION=v0.8.1
+VERSION=v0.8.2
 
 PKG=github.com/kubernetes-sigs/aws-fsx-csi-driver
 GIT_COMMIT?=$(shell git rev-parse HEAD)

diff --git a/docs/README.md b/docs/README.md
@@ -8,19 +8,20 @@
 The [Amazon FSx for Lustre](https://aws.amazon.com/fsx/lustre/) Container Storage Interface (CSI) Driver implements [CSI](https://github.com/container-storage-interface/spec/blob/master/spec.md) specification for container orchestrators (CO) to manage lifecycle of Amazon FSx for Lustre filesystems.
 
 ### CSI Specification Compability Matrix
-| AWS FSx for Lustre CSI Driver \ CSI Version       | v0.3.0| v1.x.x |
-|---------------------------------------------------|-------|--------|
-| master branch                                     | no    | yes    |
-| v0.8.1                                            | no    | yes    |
-| v0.8.0                                            | no    | yes    |
-| v0.7.1                                            | no    | yes    |
-| v0.7.0                                            | no    | yes    |
-| v0.6.0                                            | no    | yes    |
-| v0.5.0                                            | no    | yes    |
-| v0.4.0                                            | no    | yes    |
-| v0.3.0                                            | no    | yes    |
-| v0.2.0                                            | no    | yes    |
-| v0.1.0                                            | yes   | no     |
+| AWS FSx for Lustre CSI Driver \ CSI Version | v0.3.0 | v1.x.x |
+|---------------------------------------------|--------|--------|
+| master branch                               | no     | yes    |
+| v0.8.2                                      | no     | yes    |
+| v0.8.1                                      | no     | yes    |
+| v0.8.0                                      | no     | yes    |
+| v0.7.1                                      | no     | yes    |
+| v0.7.0                                      | no     | yes    |
+| v0.6.0                                      | no     | yes    |
+| v0.5.0                                      | no     | yes    |
+| v0.4.0                                      | no     | yes    |
+| v0.3.0                                      | no     | yes    |
+| v0.2.0                                      | no     | yes    |
+| v0.1.0                                      | yes    | no     |
 
 ### Features
 The following CSI interfaces are implemented:
@@ -32,34 +33,36 @@ The following CSI interfaces are implemented:
 The following sections are Kubernetes-specific. If you are a Kubernetes user, use the following for driver features, installation steps and examples.
 
 ### Kubernetes Version Compability Matrix
-| AWS FSx for Lustre CSI Driver \ Kubernetes Version| v1.11 | v1.12 | v1.13 | v1.14-16 | v1.17+ |
-|---------------------------------------------------|-------|-------|-------|----------|--------|
-| master branch                                     | no    | no    | no    | no       | yes    |
-| v0.8.1                                            | no    | no    | no    | no       | yes    |
-| v0.8.0                                            | no    | no    | no    | no       | yes    |
-| v0.7.1                                            | no    | no    | no    | no       | yes    |
-| v0.7.0                                            | no    | no    | no    | no       | yes    |
-| v0.6.0                                            | no    | no    | no    | no       | yes    |
-| v0.5.0                                            | no    | no    | no    | no       | yes    |
-| v0.4.0                                            | no    | no    | no    | yes      | yes    |
-| v0.3.0                                            | no    | no    | no    | yes      | yes    |
-| v0.2.0                                            | no    | no    | no    | yes      | yes    |
-| v0.1.0                                            | yes   | yes   | yes   | no       | no     |
+| AWS FSx for Lustre CSI Driver \ Kubernetes Version | v1.11 | v1.12 | v1.13 | v1.14-16 | v1.17+ |
+|----------------------------------------------------|-------|-------|-------|----------|--------|
+| master branch                                      | no    | no    | no    | no       | yes    |
+| v0.8.2                                             | no    | no    | no    | no       | yes    |
+| v0.8.1                                             | no    | no    | no    | no       | yes    |
+| v0.8.0                                             | no    | no    | no    | no       | yes    |
+| v0.7.1                                             | no    | no    | no    | no       | yes    |
+| v0.7.0                                             | no    | no    | no    | no       | yes    |
+| v0.6.0                                             | no    | no    | no    | no       | yes    |
+| v0.5.0                                             | no    | no    | no    | no       | yes    |
+| v0.4.0                                             | no    | no    | no    | yes      | yes    |
+| v0.3.0                                             | no    | no    | no    | yes      | yes    |
+| v0.2.0                                             | no    | no    | no    | yes      | yes    |
+| v0.1.0                                             | yes   | yes   | yes   | no       | no     |
 
 ### Container Images
-|FSx CSI Driver Version     | Image                               |
-|---------------------------|-------------------------------------|
-|master branch              |amazon/aws-fsx-csi-driver:latest     |
-|v0.8.1                     |amazon/aws-fsx-csi-driver:v0.8.1     |
-|v0.8.0                     |amazon/aws-fsx-csi-driver:v0.8.0     |
-|v0.7.1                     |amazon/aws-fsx-csi-driver:v0.7.1     |
-|v0.7.0                     |amazon/aws-fsx-csi-driver:v0.7.0     |
-|v0.6.0                     |amazon/aws-fsx-csi-driver:v0.6.0     |
-|v0.5.0                     |amazon/aws-fsx-csi-driver:v0.5.0     |
-|v0.4.0                     |amazon/aws-fsx-csi-driver:v0.4.0     |
-|v0.3.0                     |amazon/aws-fsx-csi-driver:v0.3.0     |
-|v0.2.0                     |amazon/aws-fsx-csi-driver:v0.2.0     |
-|v0.1.0                     |amazon/aws-fsx-csi-driver:v0.1.0     |
+| FSx CSI Driver Version | Image                            |
+|------------------------|----------------------------------|
+| master branch          | amazon/aws-fsx-csi-driver:latest |
+| v0.8.2                 | amazon/aws-fsx-csi-driver:v0.8.2 |
+| v0.8.1                 | amazon/aws-fsx-csi-driver:v0.8.1 |
+| v0.8.0                 | amazon/aws-fsx-csi-driver:v0.8.0 |
+| v0.7.1                 | amazon/aws-fsx-csi-driver:v0.7.1 |
+| v0.7.0                 | amazon/aws-fsx-csi-driver:v0.7.0 |
+| v0.6.0                 | amazon/aws-fsx-csi-driver:v0.6.0 |
+| v0.5.0                 | amazon/aws-fsx-csi-driver:v0.5.0 |
+| v0.4.0                 | amazon/aws-fsx-csi-driver:v0.4.0 |
+| v0.3.0                 | amazon/aws-fsx-csi-driver:v0.3.0 |
+| v0.2.0                 | amazon/aws-fsx-csi-driver:v0.2.0 |
+| v0.1.0                 | amazon/aws-fsx-csi-driver:v0.1.0 |
 
 ### Features
 * Static provisioning - FSx for Lustre file system needs to be created manually first, then it could be mounted inside container as a volume using the Driver.

diff --git a/go.mod b/go.mod
@@ -3,11 +3,13 @@ module github.com/kubernetes-sigs/aws-fsx-csi-driver
 require (
 	github.com/aws/aws-sdk-go v1.40.57
 	github.com/container-storage-interface/spec v1.2.0
-	github.com/golang/mock v1.3.1
+	github.com/golang/mock v1.6.0
+	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/kubernetes-csi/csi-test v2.0.1+incompatible
 	github.com/onsi/ginkgo v1.16.5
 	github.com/onsi/gomega v1.16.0
 	google.golang.org/grpc v1.23.1
+	google.golang.org/protobuf v1.28.0 // indirect
 	k8s.io/api v0.17.0
 	k8s.io/apimachinery v0.17.0
 	k8s.io/client-go v0.17.0

diff --git a/go.sum b/go.sum
@@ -214,6 +214,8 @@ github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfb
 github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/mock v1.3.1 h1:qGJ6qTW+x6xX/my+8YUVl4WNpX9B7+/l2tRsHGZ7f2s=
 github.com/golang/mock v1.3.1/go.mod h1:sBzyDLLjw3U8JLTeZvSv8jJB+tU5PVekmnlKIyFUx0Y=
+github.com/golang/mock v1.6.0 h1:ErTB+efbowRARo13NNdxyJji2egdxLGQhRaY+DUumQc=
+github.com/golang/mock v1.6.0/go.mod h1:p6yTPP+5HYm5mzsMV8JkE6ZKdX+/wYM6Hr+LicevLPs=
 github.com/golang/protobuf v0.0.0-20161109072736-4bd1920723d7/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
@@ -533,6 +535,7 @@ github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q
 github.com/xlab/handysort v0.0.0-20150421192137-fb3537ed64a1/go.mod h1:QcJo0QPSfTONNIgpN5RA8prR7fF8nkF6cTWTcNerRO8=
 github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
 github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
 go.etcd.io/bbolt v1.3.3 h1:MUGmc65QhB3pIlaQ5bB4LwqSj6GIonVJXpZiaKNyaKk=
 go.etcd.io/bbolt v1.3.3/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
 go.etcd.io/etcd v0.0.0-20191023171146-3cf2f69b5738 h1:VcrIfasaLFkyjk6KNlXQSzO+B0fZcnECiDrKJsfxka0=
@@ -578,6 +581,8 @@ golang.org/x/lint v0.0.0-20190409202823-959b441ac422/go.mod h1:6SW0HCj/g11FgYtHl
 golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
 golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/mod v0.4.2 h1:Gz96sIWK3OalVv/I/qNygP42zyoKp3xptRVCWRFEBvo=
+golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/net v0.0.0-20170114055629-f2499483f923/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20170915142106-8351a756f30f/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -604,6 +609,7 @@ golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20191004110552-13f9640d40b9/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
+golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
 golang.org/x/net v0.0.0-20210428140749-89ef3d95e781/go.mod h1:OJAsFXCWl8Ukc7SiCT/9KSuxbyM7479/AVlXFRxuMCk=
 golang.org/x/net v0.0.0-20210614182718-04defd469f4e h1:XpT3nA5TvE525Ne3hInMh6+GETgn27Zfm9dxsThnX2Q=
 golang.org/x/net v0.0.0-20210614182718-04defd469f4e/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
@@ -620,6 +626,7 @@ golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20170830134202-bb24a47a89ea/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20171026204733-164713f0dfce/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -649,8 +656,11 @@ golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210112080510-489259a85091/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da h1:b3NXsE2LusjYGGjL5bxEVZZORm/YEFFrWFjR8eFrw/c=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210510120138-977fb7262007 h1:gG67DSER+11cZvqIMb8S8bt0vZtiN6xWYARwirrOSfE=
+golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.0.0-20160726164857-2910a502d2bf/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.0.0-20170915090833-1cbadb444a80/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -695,6 +705,8 @@ golang.org/x/tools v0.0.0-20190909030654-5b82db07426d/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20190920225731-5eefd052ad72/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20201224043029-2b0845dc783e/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
+golang.org/x/tools v0.1.1 h1:wGiQel/hW0NnEkJUk8lbzkX2gFJU6PFxf1v5OlCfuOs=
+golang.org/x/tools v0.1.1/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -727,6 +739,8 @@ google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0 h1:bxAC2xTBsZGibn2RTntX0oH50xLsqy1OxA9tTL3p/lk=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
+google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/airbrake/gobrake.v2 v2.0.9/go.mod h1:/h5ZAUhDkGaJfjzjKLSjv6zCL6O0LLBxU4K+aSYdM/U=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

diff --git a/hack/e2e/run.sh b/hack/e2e/run.sh
@@ -105,7 +105,7 @@ loudecho "Installing ginkgo to ${BIN_DIR}"
 GINKGO_BIN=${BIN_DIR}/ginkgo
 if [[ ! -e ${GINKGO_BIN} ]]; then
   pushd /tmp
-  GOPATH=${TEST_DIR} GOBIN=${BIN_DIR} GO111MODULE=on go get github.com/onsi/ginkgo/[email protected]
+  GOPATH=${TEST_DIR} GOBIN=${BIN_DIR} GO111MODULE=on go install github.com/onsi/ginkgo/[email protected]
   popd
 fi
 

diff --git a/hack/update-gomock b/hack/update-gomock
@@ -17,7 +17,7 @@
 set -euo pipefail
 
 IMPORT_PATH=github.com/kubernetes-sigs/aws-fsx-csi-driver
-mockgen -package=mocks -destination=./pkg/driver/mocks/mock_mount.go ${IMPORT_PATH}/pkg/driver Mounter
-mockgen -package=mocks -destination=./pkg/cloud/mocks/mock_ec2metadata.go ${IMPORT_PATH}/pkg/cloud EC2Metadata
-mockgen -package=mocks -destination=./pkg/cloud/mocks/mock_fsx.go ${IMPORT_PATH}/pkg/cloud FSx
-mockgen -package=mocks -destination=./pkg/driver/mocks/mock_cloud.go ${IMPORT_PATH}/pkg/cloud Cloud
+mockgen -package=mocks -destination=./pkg/driver/mocks/mock_mount.go --build_flags=--mod=mod ${IMPORT_PATH}/pkg/driver Mounter
+mockgen -package=mocks -destination=./pkg/cloud/mocks/mock_ec2metadata.go --build_flags=--mod=mod ${IMPORT_PATH}/pkg/cloud EC2Metadata
+mockgen -package=mocks -destination=./pkg/cloud/mocks/mock_fsx.go --build_flags=--mod=mod ${IMPORT_PATH}/pkg/cloud FSx
+mockgen -package=mocks -destination=./pkg/driver/mocks/mock_cloud.go --build_flags=--mod=mod ${IMPORT_PATH}/pkg/cloud Cloud
diff --git a/pkg/driver/mocks/mock_mount.go b/pkg/driver/mocks/mock_mount.go
diff --git a/pkg/driver/mount.go b/pkg/driver/mount.go
@@ -17,14 +17,15 @@ limitations under the License.
 package driver
 
 import (
-	"os"
-
 	"k8s.io/utils/mount"
+	"os"
 )
 
 // Mounter is an interface for mount operations
 type Mounter interface {
 	mount.Interface
+	IsCorruptedMnt(err error) bool
+	PathExists(path string) (bool, error)
 	MakeDir(pathname string) error
 }
 
@@ -47,3 +48,17 @@ func (m *NodeMounter) MakeDir(pathname string) error {
 	}
 	return nil
 }
+
+//IsCorruptedMnt return true if err is about corrupted mount point
+func (m *NodeMounter) IsCorruptedMnt(err error) bool {
+	return mount.IsCorruptedMnt(err)
+}
+
+func (m *NodeMounter) PathExists(path string) (bool, error) {
+	if _, err := os.Stat(path); os.IsNotExist(err) {
+		return false, nil
+	} else if err != nil {
+		return false, err
+	}
+	return true, nil
+}