Christian Schwarz 1462c5caa5 zfs: fix batch destroy panic if all snaps are undestroyable ... See https://github.com/zrepl/zrepl/pull/259#issuecomment-585334023 panic: runtime error: index out of range [0] with length 0 goroutine 14 [running]: github.com/zrepl/zrepl/zfs.tryBatch(0xd6aa20, 0xc0000b8018, 0xc00025e0c0, 0x0, 0x6, 0xd61d80, 0x1280df8, 0xd58920, 0xc000132000) zrepl/zfs/versions_destroy.go:129 +0x302 github.com/zrepl/zrepl/zfs.doDestroyBatchedRec(0xd6aa20, 0xc0000b8018, 0xc000578a80, 0x6, 0x6, 0xd61d80, 0x1280df8) zrepl/zfs/versions_destroy.go:184 +0x4a5 github.com/zrepl/zrepl/zfs.doDestroyBatched(0xd6aa20, 0xc0000b8018, 0xc000222780, 0x6, 0x8, 0xd61d80, 0x1280df8) zrepl/zfs/versions_destroy.go:95 +0xc7 github.com/zrepl/zrepl/zfs.doDestroy(0xd6aa20, 0xc0000b8018, 0xc0005788d0, 0x6, 0x6, 0xd61d80, 0x1280df8) zrepl/zfs/versions_destroy.go:82 +0x362 github.com/zrepl/zrepl/zfs.ZFSDestroyFilesystemVersions(...) zrepl/zfs/versions_destroy.go:41 github.com/zrepl/zrepl/endpoint.doDestroySnapshots(0xd6aaa0, 0xc0004412c0, 0xc00057ca00, 0xc0005785a0, 0x6, 0x6, 0xb68940, 0xc5df01, 0xc000150a80) zrepl/endpoint/endpoint.go:785 +0x388 github.com/zrepl/zrepl/endpoint.(*Receiver).DestroySnapshots(0xc000127500, 0xd6aaa0, 0xc0004412c0, 0xc0002ca280, 0xc000150880, 0xd73ca0, 0xc00057c960) zrepl/endpoint/endpoint.go:751 +0xdb github.com/zrepl/zrepl/daemon/pruner.doOneAttemptExec(0xc000429980, 0xc000429958, 0xc0001cb180) zrepl/daemon/pruner/pruner.go:531 +0x51f github.com/zrepl/zrepl/daemon/pruner.doOneAttempt(0xc000429980, 0xc000429958) zrepl/daemon/pruner/pruner.go:486 +0x1064 github.com/zrepl/zrepl/daemon/pruner.(*Pruner).prune(0xc00011e280, 0xd6aaa0, 0xc0004412c0, 0x7f4906fff7e8, 0xc000127500, 0x7f4906fff738, 0xc0001324e0, 0xc000064420, 0x1, 0x1, ...) zrepl/daemon/pruner/pruner.go:214 +0x53 github.com/zrepl/zrepl/daemon/pruner.(*Pruner).Prune(...) zrepl/daemon/pruner/pruner.go:200 github.com/zrepl/zrepl/daemon/job.(*ActiveSide).do(0xc000268000, 0xd6a9e0, 0xc0002223c0) zrepl/daemon/job/active.go:482 +0x906 github.com/zrepl/zrepl/daemon/job.(*ActiveSide).Run(0xc000268000, 0xd6aaa0, 0xc000127080) zrepl/daemon/job/active.go:404 +0x289 github.com/zrepl/zrepl/daemon.(*jobs).start.func1(0xc000032200, 0xd73ca0, 0xc00000f2e0, 0xd6efa0, 0xc000268000, 0xd6aaa0, 0xc000126c90) zrepl/daemon/daemon.go:220 +0x121 created by github.com/zrepl/zrepl/daemon.(*jobs).start zrepl/daemon/daemon.go:216 +0x52e		2020-02-14 22:00:13 +01:00
..
test_helpers	Implement DatasetMapping + basic ZFS list functionality.	2017-04-26 17:39:16 +02:00
datasetpath_visitor_test.go	format source tree using goimports	2019-03-22 19:41:12 +01:00
datasetpath_visitor.go	run golangci-lint and apply suggested fixes	2019-03-27 13:12:26 +01:00
encryption.go	new features: {resumable,encrypted,hold-protected} send-recv, last-received-hold	2020-02-14 22:00:13 +01:00
holds_test.go	new features: {resumable,encrypted,hold-protected} send-recv, last-received-hold	2020-02-14 22:00:13 +01:00
holds.go	new features: {resumable,encrypted,hold-protected} send-recv, last-received-hold	2020-02-14 22:00:13 +01:00
mapping.go	format source tree using goimports	2019-03-22 19:41:12 +01:00
namecheck_test.go	new features: {resumable,encrypted,hold-protected} send-recv, last-received-hold	2020-02-14 22:00:13 +01:00
namecheck.go	new features: {resumable,encrypted,hold-protected} send-recv, last-received-hold	2020-02-14 22:00:13 +01:00
placeholder.go	endpoint: Receiver: only create placeholders below root_fs	2019-09-07 20:01:15 +02:00
prometheus.go	bring back prometheus metrics, with new metrics for replication state machine	2018-09-07 22:22:34 -07:00
resume_token.go	new features: {resumable,encrypted,hold-protected} send-recv, last-received-hold	2020-02-14 22:00:13 +01:00
versions_destroy_test.go	zfs: fix batch destroy panic if all snaps are undestroyable	2020-02-14 22:00:13 +01:00
versions_destroy.go	zfs: fix batch destroy panic if all snaps are undestroyable	2020-02-14 22:00:13 +01:00
versions.go	new features: {resumable,encrypted,hold-protected} send-recv, last-received-hold	2020-02-14 22:00:13 +01:00
zfs_debug.go	run golangci-lint and apply suggested fixes	2019-03-27 13:12:26 +01:00
zfs_pipe_linux.go	rpc rewrite: control RPCs using gRPC + separate RPC for data transfer	2019-03-13 13:53:48 +01:00
zfs_pipe.go	rpc rewrite: control RPCs using gRPC + separate RPC for data transfer	2019-03-13 13:53:48 +01:00
zfs_test.go	format source tree using goimports	2019-03-22 19:41:12 +01:00
zfs.go	new features: {resumable,encrypted,hold-protected} send-recv, last-received-hold	2020-02-14 22:00:13 +01:00