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1.4 KiB
CT Deletion with Stale RBD Config — 2026-07-14
Problem
pct destroy <CTID> --purge fails with exit 255 when the RBD disk image
was already deleted by a prior operation:
rbd error: rbd: error opening image vm-112-disk-0: (2) No such file or directory
The CT config file remains in pmxcfs (/etc/pve/lxc/NNN.conf), so
pct list still shows the CT as stopped.
Fix
# On the PVE node hosting the CT:
rm -f /etc/pve/lxc/NNN.conf
# Verify:
pct list | grep NNN # Should return nothing
Reliable CT Deletion Sequence
pct stop NNN(ensure stopped)pct destroy NNN --purge --destroy-unreferenced-disks- If it fails with RBD error but config remains:
rm -f /etc/pve/lxc/NNN.conf - Verify:
pct list | grep NNN→ empty
Pitfall
--destroy-unreferenced-disks helps clean up orphaned RBD images not
referenced in the CT config, but if the RBD image is already gone, the
flag doesn't suppress the error — it just tries and fails on the missing
image. The config file is the leftover that needs manual cleanup.
Session Context
CT112 (Authelia) was stopped and then deleted with pct destroy 112 --purge. The RBD image was apparently already removed (possibly during
a prior storage migration or manual cleanup), so the destroy command
failed on the missing image. The config was manually removed with
rm -f /etc/pve/lxc/112.conf.