#zfs
Every post tagged zfs.
Blog posts
Understanding Proxmox VE Disk Cache Modes: Write Back, Write Through, None, and Direct Sync Explained
Learn what each Proxmox VE disk cache mode actually does at the QEMU level, why ZFS needs Direct sync instead of the default, and how to choose safely between No cache, Write back, Write through, and Write back (unsafe) without risking data loss on host failure.
How to Create ZFS Storage in Proxmox VE (Step-by-Step Guide)
Turn spare disks into self-healing storage. This beginner guide shows how to build a ZFS pool in Proxmox VE using the GUI or CLI, then add it as usable storage for VMs and containers.
How to Take Snapshots in Proxmox VE (and Roll Back Safely)
Learn how to take, list, roll back, and delete VM and container snapshots in Proxmox VE, which storage types support them, and why a snapshot isn't the same thing as a backup.
Speeding Up HDD-Backed ZFS Pools in Proxmox VE with a Special Device
HDD-backed ZFS pools on Proxmox VE and PBS choke on metadata-heavy operations like garbage collection and snapshot listing. Here's how a mirrored ZFS special device fixes it, with diagnosis, commands, and sizing guidance.
Speeding Up Metadata-Heavy Workloads on Proxmox VE with ZFS Special Allocation Class Vdevs
Directory listings and PBS garbage collection crawling on an otherwise fast ZFS pool? A special allocation class vdev moves metadata off spinning disks and onto SSD without rebuilding the pool.
Diagnosing and Fixing Failed Proxmox VE Storage Replication Jobs
ZFS-based replication keeps Proxmox VE HA working without a SAN, but jobs fail quietly from broken snapshot chains, renamed storage IDs, and full target pools. Here's how to read pvesr's errors, find the real root cause, and trust the GUI again.
Tuning ZFS ARC Memory Limits on Proxmox VE Storage Nodes
Learn why ZFS ARC's default memory ceiling causes VM OOM errors on Proxmox hosts, and how to safely cap and persist zfs_arc_max.
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