[SOLVED] Unable to create lxc container

[liuhonglu]

I posted a thread before to ask for help, but there was only one reply: saying that I didn't have enough storage space, which caused the error. However, I had enough free space, and attached a screenshot of the free space, but there was no response, so I had to post again for help.

I got the following error when creating an openwrt lxc container: pct create 102 local:vztmpl/openwrt.tar.gz --rootfs local-lvm:5 --ostype unmanaged --hostname op --arch amd64 --cores 2 --memory 1024 --swap 0 -net0 bridge=vmbr0,name=eth0
WARNING: You have not turned on protection against thin pools running out of space.
WARNING: Set activation/thin_pool_autoextend_threshold below 100 to trigger automatic extension of thin pools before they get full.
Logical volume "vm-102-disk-0" created.
WARNING: Sum of all thin volume sizes (375.51 GiB) exceeds the size of thin pool pve/data and the size of whole volume group (237.47 GiB).
Creating filesystem with 1310720 4k blocks and 327680 inodes
Filesystem UUID: 2b077a96-e504-44bc-bb21-d5aad1280714
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736
extracting archive '/var/lib/vz/template/cache/openwrt.tar.gz'
Total bytes read: 1276887040 (1.2GiB, 133MiB/s)
。
I used this command to create openwrt's lxc container several times a year ago, and there was no such error. Until this time I created it again, this error always occurred

 

[gfngfn256]

I used this command to create openwrt's lxc container several times a year ago, and there was no such error. Until this time I created it again, this error always occurred

The "error" is pretty self explanatory. In plain English:

The summed up size of all volumes is bigger than your thin pool.

However you must realize that for each "volume" here, the size is really theoretical - since its a thin-volume. So as long as you don't actually use all of that space - you won't encounter a problem. I imagine this particular LXC got created successfully.

The reason why "several times a year ago there was no such error" is because at the time the total volume size did not exceed the thin pool.

 

[gfngfn256]

Edit: To actually see the amount/s used try pvesm status

I looked at the attached image & see that in fact the container has not been created correctly. So obviously 1GB is not big enough.

 

[liuhonglu]

Yes, I allocated too little space for the lxc container, which led to the error. Thank you for your help.

 

[gfngfn256]

If everything is sorted, maybe tag prefix the thread-title with [SOLVED], (upper right hand corner under title).