backup: TestDataDriven_restore_tenants failed

backup.TestDataDriven_restore_tenants [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Ci_TestsIbmCloudLinuxS390x_UnitTestsS390x/21368004?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Ci_TestsIbmCloudLinuxS390x_UnitTestsS390x/21368004?buildTab=artifacts#/) on release-26.1 @ [d1acd9efba925395e89856897aad3aac51b67f1f](https://github.com/cockroachdb/cockroach/commits/d1acd9efba925395e89856897aad3aac51b67f1f):

```
created by github.com/cockroachdb/pebble/internal/genericcache.(*shard[...]).Init in goroutine 34797
external/com_github_cockroachdb_pebble/internal/genericcache/shard.go:54 +0x1da

goroutine 41528 [chan receive, 59 minutes]:
github.com/cockroachdb/pebble/internal/genericcache.(*shard[...]).releaseLoop(0x882fc600)
external/com_github_cockroachdb_pebble/internal/genericcache/shard.go:61 +0x80
created by github.com/cockroachdb/pebble/internal/genericcache.(*shard[...]).Init in goroutine 34797
external/com_github_cockroachdb_pebble/internal/genericcache/shard.go:54 +0x1da

goroutine 41505 [select]:
github.com/cockroachdb/cockroach/pkg/util/admission.(*WorkQueue).startClosingEpochs.func1()
pkg/util/admission/work_queue.go:479 +0x1e4
created by github.com/cockroachdb/cockroach/pkg/util/admission.(*WorkQueue).startClosingEpochs in goroutine 34797
pkg/util/admission/work_queue.go:450 +0x84

goroutine 41536 [chan receive, 59 minutes]:
github.com/cockroachdb/pebble/internal/genericcache.(*shard[...]).releaseLoop(0x882fc600)
external/com_github_cockroachdb_pebble/internal/genericcache/shard.go:61 +0x80
created by github.com/cockroachdb/pebble/internal/genericcache.(*shard[...]).Init in goroutine 34797
external/com_github_cockroachdb_pebble/internal/genericcache/shard.go:54 +0x1da

goroutine 41473 [chan receive, 59 minutes]:
github.com/cockroachdb/pebble/internal/genericcache.(*shard[...]).releaseLoop(0x882fc600)
external/com_github_cockroachdb_pebble/internal/genericcache/shard.go:61 +0x80
created by github.com/cockroachdb/pebble/internal/genericcache.(*shard[...]).Init in goroutine 34797
external/com_github_cockroachdb_pebble/internal/genericcache/shard.go:54 +0x1da

goroutine 41529 [chan receive, 59 minutes]:
github.com/cockroachdb/pebble/internal/genericcache.(*shard[...]).releaseLoop(0x882fc600)
external/com_github_cockroachdb_pebble/internal/genericcache/shard.go:61 +0x80
created by github.com/cockroachdb/pebble/internal/genericcache.(*shard[...]).Init in goroutine 34797
external/com_github_cockroachdb_pebble/internal/genericcache/shard.go:54 +0x1da

goroutine 34798 [select, 59 minutes]:
github.com/cockroachdb/cockroach/pkg/util/log.(*fileSink).gcDaemon(0xc00b750000, {0x88246218, 0xc00226c0a0})
pkg/util/log/file_log_gc.go:20 +0x8e
created by github.com/cockroachdb/cockroach/pkg/util/log.ApplyConfig in goroutine 34797
pkg/util/log/flags.go:365 +0x14dc

goroutine 41458 [chan receive, 59 minutes, "pebble":"gc"]:
github.com/cockroachdb/pebble/internal/deletepacer.(*DeletePacer).mainLoop(0xc00aff0508)
external/com_github_cockroachdb_pebble/internal/deletepacer/delete_pacer.go:183 +0x3b2
github.com/cockroachdb/pebble/internal/deletepacer.Open.func1.1({0x88246250, 0xc00d030fc0})
external/com_github_cockroachdb_pebble/internal/deletepacer/delete_pacer.go:108 +0x30
runtime/pprof.Do({0x882459f0, 0x8c3d3340}, {{0xc009ab17c0, 0x1, 0x1}}, 0xc006a15fa8)
GOROOT/src/runtime/pprof/runtime.go:51 +0xc2
github.com/cockroachdb/pebble/internal/deletepacer.Open.func1()
external/com_github_cockroachdb_pebble/internal/deletepacer/delete_pacer.go:107 +0xba
created by github.com/cockroachdb/pebble/internal/deletepacer.Open in goroutine 34797
external/com_github_cockroachdb_pebble/internal/deletepacer/delete_pacer.go:106 +0x29a
```
Help

See also: [How To Investigate a Go Test Failure \(internal\)](https://cockroachlabs.atlassian.net/l/c/HgfXfJgM)

/cc @cockroachdb/disaster-recovery

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Jira issue: CRDB-64474