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20 hours ago •
k8up-io
k8up-io
K8up is unable to restore a single file snapshot
Description
I've created an instance from ghcr.io/k8up-io/k8up:v2 and set the followings:
- args:
- -restore
- -restoreSnap
- 207d6a74
- -restoreType
- folder
The Snapshot id points to a single .sql file which has been created via K8up application aware backup from a PostgreSQL instance. It fails with with the following error: panic: runtime error: slice bounds out of range [:3] with capacity 2.
The snapshot above can be restored manually via the Restic binary packed in the same image.
Additional Context
My goal was to restore to a RWO volume thus used podAffinity spec to get my pod scheduled beside the target pod.
Tried with the operator as well, pointing to a RWX volume, it fails too.
Logs
1.6745719441801126e+09 INFO k8up.restic initializing
1.674571944180123e+09 INFO k8up.restic setting up a signal handler
1.6745719441801894e+09 INFO k8up.restic.restic using the following restic options {"options": [""]}
1.6745719441802113e+09 INFO k8up.restic.restic.RepoInit.command restic command {"path": "/usr/local/bin/restic", "args": ["init", "--option", ""]}
1.6745719441802182e+09 INFO k8up.restic.restic.RepoInit.command Defining RESTIC_PROGRESS_FPS {"frequency": 0.016666666666666666}
1.6745719442500741e+09 INFO k8up.restic.restic.unlock unlocking repository {"all": false}
1.6745719442501287e+09 INFO k8up.restic.restic.unlock.command restic command {"path": "/usr/local/bin/restic", "args": ["unlock", "--option", ""]}
1.6745719442501488e+09 INFO k8up.restic.restic.unlock.command Defining RESTIC_PROGRESS_FPS {"frequency": 0.016666666666666666}
1.6745719448515744e+09 INFO k8up.restic.restic.unlock.restic.stderr successfully removed locks
1.6745719448527825e+09 INFO k8up.restic.restic.snapshots getting list of snapshots
1.6745719448528092e+09 INFO k8up.restic.restic.snapshots.command restic command {"path": "/usr/local/bin/restic", "args": ["snapshots", "--option", "", "--json"]}
1.6745719448528461e+09 INFO k8up.restic.restic.snapshots.command Defining RESTIC_PROGRESS_FPS {"frequency": 0.016666666666666666}
1.674571945789223e+09 INFO k8up.restic.restic.restore restore initialised
1.674571945789251e+09 INFO k8up.restic.restic.restore loading all snapshots from repositoy
1.6745719457892542e+09 INFO k8up.restic.restic.snapshots getting list of snapshots
1.6745719457892606e+09 INFO k8up.restic.restic.snapshots.command restic command {"path": "/usr/local/bin/restic", "args": ["snapshots", "--option", "", "--json"]}
1.674571945789275e+09 INFO k8up.restic.restic.snapshots.command Defining RESTIC_PROGRESS_FPS {"frequency": 0.016666666666666666}
panic: runtime error: slice bounds out of range [:3] with capacity 2
goroutine 1 [running]:
github.com/k8up-io/k8up/v2/restic/cli.(*Restic).linkRestorePaths(0x14a05f9?, {{0xc000054700, 0x40}, {0x230ca086, 0xedb60a0fa, 0x0}, {0xc0000546c0, 0x40}, {0xc000698380, 0x1, ...}, ...}, ...)
/home/runner/work/k8up/k8up/restic/cli/restore.go:200 +0x265
github.com/k8up-io/k8up/v2/restic/cli.(*Restic).folderRestore(0xc000056c80, {0xc00004806c, 0x8}, {{0xc000054700, 0x40}, {0x230ca086, 0xedb60a0fa, 0x0}, {0xc0000546c0, 0x40}, ...}, ...)
/home/runner/work/k8up/k8up/restic/cli/restore.go:144 +0xf8
github.com/k8up-io/k8up/v2/restic/cli.(*Restic).Restore(0xc000056c80, {0x7fff01c76681, 0x8}, {{0x7fff01c76697, 0x6}, {0xc00004806c, 0x8}, {0x0, 0x0}, 0x0, ...}, ...)
/home/runner/work/k8up/k8up/restic/cli/restore.go:89 +0x4aa
github.com/k8up-io/k8up/v2/cmd/restic.doRestore(0x1?)
/home/runner/work/k8up/k8up/cmd/restic/main.go:189 +0x1c7
github.com/k8up-io/k8up/v2/cmd/restic.doNonBackupTasks(0x0?)
/home/runner/work/k8up/k8up/cmd/restic/main.go:159 +0x45
github.com/k8up-io/k8up/v2/cmd/restic.run({0x1a56560, 0xc00004c030}, 0x1a58f50?, {{0x1a58f50?, 0xc000200c60?}, 0x1a452b0?})
/home/runner/work/k8up/k8up/cmd/restic/main.go:118 +0x92
github.com/k8up-io/k8up/v2/cmd/restic.resticMain(0xc0006991c0)
/home/runner/work/k8up/k8up/cmd/restic/main.go:105 +0x25e
github.com/urfave/cli/v2.(*Command).Run(0x25c6f40, 0xc0006991c0, {0xc0000a9500, 0x6, 0x6})
/home/runner/go/pkg/mod/github.com/urfave/cli/[email protected]/command.go:271 +0xa8f
github.com/urfave/cli/v2.(*Command).Run(0xc00031e140, 0xc000698b80, {0xc00003e070, 0x7, 0x7})
/home/runner/go/pkg/mod/github.com/urfave/cli/[email protected]/command.go:264 +0xced
github.com/urfave/cli/v2.(*App).RunContext(0xc0001e88c0, {0x1a56560?, 0xc00004c030}, {0xc00003e070, 0x7, 0x7})
/home/runner/go/pkg/mod/github.com/urfave/cli/[email protected]/app.go:305 +0x658
github.com/urfave/cli/v2.(*App).Run(...)
/home/runner/go/pkg/mod/github.com/urfave/cli/[email protected]/app.go:282
main.main()
/home/runner/work/k8up/k8up/cmd/k8up/main.go:28 +0x45
Expected Behavior
K8up should be able to restore a single file snapshot.
Steps To Reproduce
spec:
affinity:
podAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
- labelSelector:
matchExpressions:
- key: statefulset.kubernetes.io/pod-name
operator: In
values:
- podname
topologyKey: kubernetes.io/hostname
containers:
- args:
- -restore
- -restoreSnap
- 207d6a74
- -restoreType
- folder
command:
- /usr/local/bin/k8up
- restic
Version of K8up
v2.5
Version of Kubernetes
v1.24.6
Distribution of Kubernetes
AKS
