The backup failure is caused by instability on the NFS server, not by Vertica opening too many files or having “too many files” in the backup set. Multiple database nodes report the kernel message “NFS: server error: fileid changed”, which indicates that the NFS server is modifying file handles during the backup process. This interrupts file access and causes Vertica to fail with I/O errors.
Environment
- Product: Vertica Analytics Platform
- Backup method: VBR backup to NFS-mounted directory
- Storage: NFS export
- OS indicators: Kernel/dmesg messages showing “fileid changed”
Situation
During a Vertica backup, the following kernel messages repeatedly appear on multiple database nodes (dmesg)
