roachtest: backup/ceph/reef/plain failed

roachtest.backup/ceph/reef/plain [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyGceBazel/21335268?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyGceBazel/21335268?buildTab=artifacts#/backup/ceph/reef/plain) on release-26.1 @ [f6c86c46137cfaedcb02b8409f9dba99bf8bede9](https://github.com/cockroachdb/cockroach/commits/f6c86c46137cfaedcb02b8409f9dba99bf8bede9):

Failed with:

```
(cluster.go:2512).Run: full command output in run_065645.012454923_n4_sudo-snap-install-mi.log: COMMAND_PROBLEM: exit status 1
test artifacts and logs in: /artifacts/backup/ceph/reef/plain/run_1
```
Cluster Node to Ip Mapping:
| Node | Public IP | Private IP |
| --- | --- | --- |
| teamcity-21335268-1777702151-20-n4cpu4-0001 | 34.75.226.66 | 10.142.4.25 |
| teamcity-21335268-1777702151-20-n4cpu4-0002 | 34.75.46.49 | 10.142.4.20 |
| teamcity-21335268-1777702151-20-n4cpu4-0003 | 35.196.164.225 | 10.142.4.24 |
| teamcity-21335268-1777702151-20-n4cpu4-0004 | 35.190.166.231 | 10.142.1.52 |

Parameters:
- arch=amd64
- cloud=gce
- coverageBuild=false
- cpu=4
- diskCount=0
- encrypted=false
- metamorphicLeases=default
- runtimeAssertionsBuild=false
Help

See: [roachtest README](https://github.com/cockroachdb/cockroach/blob/master/pkg/cmd/roachtest/README.md)

See: [How To Investigate \(internal\)](https://cockroachlabs.atlassian.net/l/c/SSSBr8c7)

See: [Grafana](https://go.crdb.dev/roachtest-grafana/teamcity-21335268/backup-ceph-reef-plain/1777704991687/1777705197099)

Same failure on other branches

- #169605 roachtest: backup/ceph/reef/plain failed [B-runtime-assertions-enabled C-test-failure O-roachtest O-robot T-field-eng branch-release-25.4.10-rc release-blocker]
- #169602 roachtest: backup/ceph/reef/plain failed [B-runtime-assertions-enabled C-test-failure O-roachtest O-robot T-field-eng branch-release-25.2 release-blocker]
- #169598 roachtest: backup/ceph/reef/plain failed [B-runtime-assertions-enabled C-test-failure O-roachtest O-robot T-field-eng branch-release-24.3 release-blocker]

/cc @cockroachdb/field-engineering

[This test on roachdash](https://roachdash.crdb.dev/?filter=status:open%20t:.*backup/ceph/reef/plain.*&sort=title+created&display=lastcommented+project) | [Improve this report!](https://github.com/cockroachdb/cockroach/tree/master/pkg/cmd/bazci/githubpost/issues)

Jira issue: CRDB-63563