Technical
qcow2 file is bigger as hdd config: why and how to shrink it
Your qcow2 file is bigger than the configured disk because of preallocation, snapshots, or metadata.
Technical
Backup LXC to NAS NFS Share Fails: Fix Root Squash and NFS Version
Backup LXC to NAS NFS share fails with permission denied? The fix is root squash and NFS version. Here's the TrueNAS and Proxmox config that works.
Technical
Lower ZFS ARC Max Size Proxmox: The modprobe.d Edit That Sticks
Lower ZFS ARC max size on Proxmox by setting zfs_arc_max in /etc/modprobe.d/zfs.conf, then update-initramfs and reboot. Verify with arc_summary.
Technical
Proxmox Shared iSCSI Storage Multiple Nodes: LVM Cluster Setup That Works
Sharing iSCSI across Proxmox nodes needs LVM over iSCSI, not a plain filesystem. Here's the working config with TrueNAS, step by step.
Technical
Proxmox Move All Disks to New Storage: The Safe Order and Commands
Moving every VM disk and container mount to new storage in Proxmox is just a few commands. Here's the safe order, the exact syntax, and how to verify it
Technical
rpc.mountd v4.2 client detached: it’s usually normal, here’s when to worry
rpc.mountd v4.2 client detached shows up on Proxmox NFS mounts all the time. It's usually just a reconnect. Here's how to tell if it's a real problem.
Technical
Proxmox etckeeper: Set It Up Without Breaking /etc/pve
etckeeper on Proxmox works fine if you exclude /etc/pve and hook the right git commands. Here's the setup that doesn't spam cluster commits.
Technical
Backup Size vs Bootsize? Proxmox Backs Up Allocated Blocks, Not What the Guest Reports
Proxmox backup size vs bootsize: the backup reads allocated blocks on the host, so thin-provisioned disks stay small but a full guest filesystem inflates
Technical
error (500) adding nfs storage: fix it by checking these three things
Proxmox error (500) adding NFS storage usually means a bad export path, a missing package, or a permissions problem.
Technical
How to Snapshot Individual Drive in Proxmox: 3 Ways That Actually Work
Proxmox snapshots grab every disk in a VM. Here's how to snapshot just one drive using ZFS send, LVM thin snapshots, or backup splitting.