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[Question] Alternative to NFS for Proxmox Backup Server (lemmy.ml)

submitted 6 months ago by brownmustardminion@lemmy.ml to c/selfhosted@lemmy.world

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I have a backup server running Proxmox Backup and OMV in separate VMs. OMV provides the storage as an NFS to the proxmox backup server VM.

I have multiple remote servers that connect to the proxmox backup server but recently I keep having issues with backups. Something about file lock estale.

Is there an alternative to NFS I can use in OMV to provide the storage for the proxmox backup server?

I know there are vastly different configuration options, but I have some other things set up with OMV so I’m kinda stuck on that.

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[–] pyrosis@lemmy.world 4 points 6 months ago (6 children)

What is the underlying filesystem of the proxmox hypervisor and how did you pass storage into the omv vm? Also, is anything else accessing this storage?

I ask because...

The "file lock ESTALE" error in the context of NFS indicates that the file lock has become "stale." This occurs when a process is attempting to access a file that is locked by another process, but the lock information has expired or become invalid. This can happen due to various reasons such as network interruptions, server reboots, or changes in file system state.

[–] brownmustardminion@lemmy.ml 1 points 6 months ago

Looks like my reply got purged in the server update.

Running Proxmox baremetal. Two VMs: Proxmox Backup Server and OMV. Multiple HDDs passed through directly as SCSI to OMV. In OMV they're combined into a mergerfs pool. Two shared folders on the pool: one dedicated to proxmox backups and the other for data backups. The Proxmox backup shared folder is an NFS share and the other shared folder is accessed by a remote duplicati server via SSH (sftp?). Within the proxmox backup server VM, the aforementioned NFS share is set up as a storage location.

I have no problems with the duplicati backups at all. The Proxmox Backup Server was operating fine as well initially but began throwing the estale error after about a month or two.

Is there a way to fix the estale error and also to prevent it from reoccurring?

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