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| 9 Dec 2025 |
| okamis | Hello, Im in a pickle, im using runnixostest as an interactive playground, and in my machine nixosconfig when I set k3s.images=manyImages it slowly eats all my disk space
in the filesystem shared and xchg and then every following command just gives input/output error. How can I go about resolving this? The /tmp/shared itself is empty when I try to list its content
[root@machine:/tmp]# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 800M 0 800M 0% /dev
tmpfs 7.9G 0 7.9G 0% /dev/shm
tmpfs 4.0G 3.4M 4.0G 1% /run
/dev/vda 49G 3.1G 44G 7% /
nix-store 196G 20G 166G 11% /nix/.ro-store
tmpfs 7.9G 0 7.9G 0% /nix/.rw-store
overlay 7.9G 0 7.9G 0% /nix/store
shared 3.2G 3.2G 36K 100% /tmp/shared
xchg 3.2G 3.2G 36K 100% /tmp/xchg
tmpfs 1.0M 0 1.0M 0% /run/credentials/systemd-journald.service
tmpfs 7.9G 1.1M 7.9G 1% /run/wrappers
tmpfs 1.0M 0 1.0M 0% /run/credentials/getty@tty1.service
tmpfs 1.6G 4.0K 1.6G 1% /run/user/0
| 13:03:56 |
 K900 | That's honestly not a thing it was designed for | 13:05:03 |
| K900 | Why not set up a proper VM | 13:05:08 |
| okamis | Its such a nice way to do proof of concepts on. | 13:07:05 |
| K900 | nixos-rebuild build-vm is not nice? | 13:07:56 |
| okamis | I dont know I been using nix run .#packages.x86_64-linux.test.driverInteractive | 13:08:45 |
| okamis | I will read up on build-vm | 13:09:19 |
| K900 | ... | 13:12:06 |
| okamis | Do you have any knowledge of the issue? using build-vm I get a 168GB /tmp/shared. What limit of runnixotest did I break? | 15:19:06 |
| okamis | * Do you have any knowledge of the issue?, What limit of runnixotest did I break? Using. buildvm I get a 168GB /tmp/shared dir, Im guessing its a qemu thing but Im not really sure of its purpose | 15:20:08 |
| K900 | The test VMs have limited disk space, by design | 15:21:26 |
| okamis | Where can I read up on that? there is the config virtual.diskSize, but I take it its different from the /tmp/shared | 15:23:33 |
| okamis | * Where can I read up on that? there is the config virtual.diskSize, but It doesnt affect /tmp/shared | 15:24:38 |
| K900 | /tmp/shared specifically is backed by a temporary directory, which is probably backed by tmpfs, which is backed by RAM | 15:25:39 |
| K900 | With build-vm you should not have a /tmp/shared at all unless you've configured it explicitly | 15:25:53 |
| okamis | with build-vm I did get a /tmp/shared, but my confusion is more why I cannot see anything in /tmp/shared, I just see it consuming disk | 15:27:43 |
| K900 | See anything where? | 15:28:12 |
| okamis | ´ls /tmp/shared´ gives me empty dir | 15:28:28 |
| okamis | * 'ls /tmp/shared' gives me empty dir | 15:28:40 |
| K900 | You might want ls -a | 15:28:49 |
| okamis | * 'ls -a /tmp/shared' gives me empty dir | 15:28:57 |
| K900 | If it's still empty, I'm guessing this is just qemu misreporting filesystem size for shared folders | 15:29:14 |
| okamis | thank you for sharing your wizdom, bye-bye | 15:30:25 |
