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Update Servers/Virtualization/Proxmox/Configuring iSCSI-based Cluster Storage.md
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Nicole Rappe
2026-01-07 01:58:22 -07:00
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Servers/Virtualization/Proxmox/Configuring iSCSI-based Cluster Storage.md
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@@ -214,21 +214,29 @@ vgscan
!!! success !!! success
If all validation tests pass, the storage is production-ready. If all validation tests pass, the storage is production-ready.
# Cutover-specific commands, not relevant to commands above if you are setting everything up new without NFS being a pre-existing thing. ## Expanding iSCSI Storage (No Downtime)
If you need to expand the storage space of the newly-created iSCSI LUN, you can run the ZFS commands seen below on the TrueNAS Core server. The first command increases the size, the second command pre-allocated the space (thick-provisioned).
## Decommission NFS (After Cutover) !!! warning "ProxmoxVE Cluster Note"
`pvresize` must be executed on **exactly one** ProxmoxVE node.
```sh All other nodes should only perform `pvscan` / `vgscan` after the resize.
zfs destroy CLUSTER-STORAGE/NFS-STORAGE Running `pvresize` on multiple nodes can corrupt shared LVM metadata.
```
## Expand iSCSI Storage (No Downtime)
```sh ```sh
# Expand Zvol (TrueNAS) # Expand Zvol (TrueNAS)
zfs set volsize=16T CLUSTER-STORAGE/iscsi-storage zfs set volsize=16T CLUSTER-STORAGE/iscsi-storage
zfs set refreservation=16T CLUSTER-STORAGE/iscsi-storage zfs set refreservation=16T CLUSTER-STORAGE/iscsi-storage
# Rescan on Proxmox Nodes # Rescan the block device on all ProxmoxVE nodes
echo 1 > /sys/class/block/sdX/device/rescan
# Verify on all nodes that the new size is displayed
lsblk /dev/sdX
# Run this on only ONE of the ProxmoxVE nodes.
pvresize /dev/sdX pvresize /dev/sdX
# Rescan on the other nodes that you did not run the pvresize command on. They will now see the expanded free space.
pvscan
vgscan
``` ```