No space left on device / but there should be space enough

[vikozo]

Hello
i have a error doing a update

root@srv-03:~# apt autoremove -y
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following packages will be REMOVED:
pve-kernel-5.15.107-2-pve
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
8 not fully installed or removed.
After this operation, 400 MB disk space will be freed.
(Reading database ... 172926 files and directories currently installed.)
Removing pve-kernel-5.15.107-2-pve (5.15.107-2) ...
Examining /etc/kernel/postrm.d.
run-parts: executing /etc/kernel/postrm.d/initramfs-tools 5.15.107-2-pve /boot/vmlinuz-5.15.107-2-pve
update-initramfs: Deleting /boot/initrd.img-5.15.107-2-pve
run-parts: executing /etc/kernel/postrm.d/proxmox-auto-removal 5.15.107-2-pve /boot/vmlinuz-5.15.107-2-pve
run-parts: executing /etc/kernel/postrm.d/zz-proxmox-boot 5.15.107-2-pve /boot/vmlinuz-5.15.107-2-pve
Re-executing '/etc/kernel/postrm.d/zz-proxmox-boot' in new private mount namespace..
No /etc/kernel/cmdline found - falling back to /proc/cmdline
Copying and configuring kernels on /dev/disk/by-uuid/C740-C0DF
Copying kernel 5.15.107-1-pve
Copying kernel 5.15.143-1-pve
cp: error writing '/var/tmp/espmounts/C740-C0DF/vmlinuz-5.15.143-1-pve': No space left on device
run-parts: /etc/kernel/postrm.d/zz-proxmox-boot exited with return code 1
Failed to process /etc/kernel/postrm.d at /var/lib/dpkg/info/pve-kernel-5.15.107-2-pve.postrm line 14.
dpkg: error processing package pve-kernel-5.15.107-2-pve (--remove):
installed pve-kernel-5.15.107-2-pve package post-removal script subprocess returned error exit status 1
dpkg: too many errors, stopping
Errors were encountered while processing:
pve-kernel-5.15.107-2-pve
Processing was halted because there were too many errors.
E: Sub-process /usr/bin/dpkg returned an error code (1)

But

root@srv-03:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 16G 0 16G 0% /dev
tmpfs 3.2G 1.5M 3.2G 1% /run
rpool/ROOT/pve-1 1.1T 26G 1009G 3% /
tmpfs 16G 88M 16G 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
rpool 1009G 128K 1009G 1% /rpool
rpool/data 1009G 128K 1009G 1% /rpool/data
rpool/ROOT 1009G 128K 1009G 1% /rpool/ROOT
/dev/fuse 128M 76K 128M 1% /etc/pve
tmpfs 3.2G 0 3.2G 0% /run/user/0

how to remove the old file?
have a nice day
vinc

 

[fba]

Hello,
this device has not enough space: /dev/disk/by-uuid/C740-C0DF and it is not mounted by default, therefore df -h will not show it.
You can mount the partition manually and clean it up first, e. g. as described here.