Urbackup server setup on kuberntes - error

Server
1

Installing Urbackup on a Kubernetes Cluster (running on Ubuntu) will not run, and I am getting errors like “Raising nice-ceiling to 35 failed. (errno=1)” and “Reflink ioctl failed. errno=95” Can you help?

Thank you in advance!

Logs:

Raising nice-ceiling to 35 failed. (errno=1)
2025-09-19 10:46:52: Starting HTTP-Server on port 55414
2025-09-19 10:46:52: HTTP: Server started up successfully!
2025-09-19 10:46:52: Generating Server identity…
2025-09-19 10:46:52: Generating Server private/public ECDSA key…
2025-09-19 10:46:52: Calculating public key…
2025-09-19 10:46:53: Generating Server private/public DSA key…
2025-09-19 10:46:53: Calculating public key…
2025-09-19 10:46:53: Generating Server token…
2025-09-19 10:46:53: WARNING: Upgrading…
2025-09-19 10:46:53: WARNING: Upgrading database to version 8
2025-09-19 10:46:53: WARNING: Upgrading database to version 9
2025-09-19 10:46:53: WARNING: Upgrading database to version 10
2025-09-19 10:46:53: WARNING: Upgrading database to version 11
2025-09-19 10:46:53: WARNING: Upgrading database to version 12
2025-09-19 10:46:53: WARNING: Upgrading database to version 13
2025-09-19 10:46:53: WARNING: Upgrading database to version 14
2025-09-19 10:46:54: WARNING: Upgrading database to version 15
2025-09-19 10:46:54: WARNING: Upgrading database to version 16
2025-09-19 10:46:54: WARNING: Upgrading database to version 17
2025-09-19 10:46:54: WARNING: Upgrading database to version 18
2025-09-19 10:46:54: WARNING: Upgrading database to version 19
2025-09-19 10:46:54: WARNING: Upgrading database to version 20
2025-09-19 10:46:54: WARNING: Upgrading database to version 21
2025-09-19 10:46:54: WARNING: Upgrading database to version 22
2025-09-19 10:46:54: WARNING: Upgrading database to version 23
2025-09-19 10:46:54: WARNING: Upgrading database to version 24
2025-09-19 10:46:54: WARNING: Upgrading database to version 25
2025-09-19 10:46:54: WARNING: Upgrading database to version 26
2025-09-19 10:46:54: WARNING: Upgrading database to version 27
2025-09-19 10:46:54: WARNING: Upgrading database to version 28
2025-09-19 10:46:55: WARNING: Upgrading database to version 29
2025-09-19 10:46:55: WARNING: Upgrading database to version 30
2025-09-19 10:46:55: WARNING: Upgrading database to version 31
2025-09-19 10:46:55: WARNING: Upgrading database to version 32
2025-09-19 10:46:55: WARNING: Upgrading database to version 33
2025-09-19 10:46:55: WARNING: Upgrading database to version 34
2025-09-19 10:46:55: WARNING: Upgrading database to version 35
2025-09-19 10:46:55: WARNING: Upgrading database to version 36
2025-09-19 10:46:55: WARNING: Upgrading database to version 37
2025-09-19 10:46:55: WARNING: Upgrading database to version 38
2025-09-19 10:46:55: WARNING: Upgrading database to version 39
2025-09-19 10:46:55: WARNING: Upgrading database to version 40
2025-09-19 10:46:55: WARNING: Upgrading database to version 41
2025-09-19 10:46:56: WARNING: Upgrading database to version 42
2025-09-19 10:46:56: WARNING: Upgrading database to version 43
2025-09-19 10:46:56: WARNING: Upgrading database to version 44
2025-09-19 10:46:56: WARNING: Upgrading database to version 45
2025-09-19 10:46:56: WARNING: Upgrading database to version 46
2025-09-19 10:46:56: WARNING: Upgrading database to version 48
2025-09-19 10:46:56: WARNING: Upgrading database to version 49
2025-09-19 10:46:56: WARNING: Upgrading database to version 50
2025-09-19 10:46:56: WARNING: Upgrading database to version 51
2025-09-19 10:46:56: WARNING: Upgrading database to version 52
2025-09-19 10:46:56: WARNING: Upgrading database to version 53
2025-09-19 10:46:56: WARNING: Upgrading database to version 54
2025-09-19 10:46:56: WARNING: Upgrading database to version 55
2025-09-19 10:46:57: WARNING: Upgrading database to version 56
2025-09-19 10:46:57: WARNING: Upgrading database to version 57
2025-09-19 10:46:57: WARNING: Upgrading database to version 58
2025-09-19 10:46:57: WARNING: Upgrading database to version 59
2025-09-19 10:46:57: WARNING: Upgrading database to version 60
2025-09-19 10:46:57: WARNING: Upgrading database to version 61
2025-09-19 10:46:57: WARNING: Upgrading database to version 62
2025-09-19 10:46:57: WARNING: Upgrading database to version 63
2025-09-19 10:46:57: WARNING: Upgrading database to version 64
2025-09-19 10:46:57: WARNING: Upgrading database to version 65
2025-09-19 10:46:57: WARNING: Upgrading database to version 66
2025-09-19 10:46:57: WARNING: Upgrading database to version 67
2025-09-19 10:46:57: WARNING: Upgrading database to version 68
2025-09-19 10:46:57: WARNING: Done.
2025-09-19 10:46:58: Deleting database journal…
2025-09-19 10:46:58: Copying/reflinking database…
2025-09-19 10:46:58: Reflink ioctl failed. errno=95
2025-09-19 10:46:58: WARNING: Creating file entry index. This might take a while…
2025-09-19 10:46:58: Getting number of files…
2025-09-19 10:46:58: Dropping index…
2025-09-19 10:46:58: Starting creating files index…
2025-09-19 10:46:58: Creating backupid index…
2025-09-19 10:46:58: Syncing…
2025-09-19 10:46:58: Renaming back result…
2025-09-19 10:46:58: SQLite: recovered 1 frames from WAL file /var/urbackup/backup_server.db-wal code: 283
2025-09-19 10:46:58: SQLite: recovered 2 frames from WAL file /var/urbackup/backup_server_settings.db-wal code: 283
2025-09-19 10:46:58: Started UrBackup…
2025-09-19 10:46:58: Removing temporary files…
2025-09-19 10:46:58: Recreating temporary folder…
Cannot become root user
2025-09-19 10:46:58: Image mounting disabled: Cannot become root user
Cannot become root user
2025-09-19 10:46:58: Backup destination cannot handle subvolumes and snapshots. Snapshots disabled.
2025-09-19 10:46:59: Reflink ioctl failed. errno=95
2025-09-19 10:46:59: InternetService: Server started up successfully!
2025-09-19 10:46:59: UrBackup Server start up complete.
2025-09-19 10:46:59: Looking for old Sessions… 0 sessions
2025-09-19 10:46:59: Server started up successfully!
2025-09-19 10:46:59: Broadcasting on ipv4 interface eth0 addr 10.42.7.124
2025-09-19 10:46:59: Broadcasting on ipv6 interface eth0 addr fe80::493:d3ff:fe13:6610
2025-09-19 10:47:00: Downloading version file…
2025-09-19 10:47:00: Downloading signature…
2025-09-19 10:47:00: Downloading old signature…
2025-09-19 10:47:00: Getting update file URL…
2025-09-19 10:47:00: Downloading update file…
2025-09-19 10:47:05: Successfully downloaded update file.
2025-09-19 10:47:05: Downloading version file…
2025-09-19 10:47:05: Downloading signature…
2025-09-19 10:47:05: Getting update file URL…
2025-09-19 10:47:05: Downloading update file…
2025-09-19 10:47:08: Successfully downloaded update file.
2025-09-19 10:47:08: Downloading server version info…
2025-09-19 10:47:08: Downloading dataplan database…

2

Means it probably doesn’t run as root or enough permission to raise the nice ceiling. This is optional functionality, so can be ignored.

Just an information. If reflink does not work it falls back to copying.

Same here

So all good? What doesn’t work?

3

Thank you for your kind comments. I was thrown away by the error messages. The problem was that the ingress controller (traefik) could not reach the UrBackup service. I thought it had to do with the errors. However, once realizing it did not, I searched further and it turns out that the service port 55414 needs to be set to nodeport and not clusterip only. I am not entirely sure why.