Managed to start a VM again

virtweb_backend/src/app_config.rs

@@ -76,6 +76,9 @@ pub struct AppConfig {
     pub storage: String,
 
     /// Directory where temporary files are stored
+    ///
+    /// Warning! This directory MUST be changed if `/tmp` is not in the same disk as the storage
+    /// directory!
     #[arg(long, env, default_value = "/tmp")]
     pub temp_dir: String,
 

virtweb_backend/src/controllers/iso_controller.rs

@@ -59,7 +59,10 @@ pub async fn upload_file(MultipartForm(mut form): MultipartForm<UploadIsoForm>)
         return Ok(HttpResponse::Conflict().json("The file already exists!"));
     }
 
-    file.file.persist(dest_file)?;
+    file.file.persist(&dest_file)?;
+
+    // Set file permissions
+    files_utils::set_file_permission(dest_file, 0o644)?;
 
     Ok(HttpResponse::Accepted().finish())
 }

virtweb_backend/src/libvirt_lib_structures.rs

@@ -181,6 +181,25 @@ pub struct DomainMemoryXML {
     pub memory: usize,
 }
 
+#[derive(serde::Serialize, serde::Deserialize)]
+#[serde(rename = "topology")]
+pub struct DomainCPUTopology {
+    #[serde(rename(serialize = "@sockets"))]
+    pub sockets: usize,
+    #[serde(rename(serialize = "@cores"))]
+    pub cores: usize,
+    #[serde(rename(serialize = "@threads"))]
+    pub threads: usize,
+}
+
+#[derive(serde::Serialize, serde::Deserialize)]
+#[serde(rename = "cpu")]
+pub struct DomainCPUXML {
+    #[serde(rename(serialize = "@mode"))]
+    pub mode: String,
+    pub topology: Option<DomainCPUTopology>,
+}
+
 /// Domain information, see https://libvirt.org/formatdomain.html
 #[derive(serde::Serialize, serde::Deserialize)]
 #[serde(rename = "domain")]
@@ -202,6 +221,9 @@ pub struct DomainXML {
     /// The maximum allocation of memory for the guest at boot time
     pub memory: DomainMemoryXML,
 
+    /// CPU information
+    pub cpu: DomainCPUXML,
+
     pub on_poweroff: String,
     pub on_reboot: String,
     pub on_crash: String,

virtweb_backend/src/libvirt_rest_structures.rs

@@ -2,9 +2,9 @@ use crate::app_config::AppConfig;
 use crate::constants;
 use crate::libvirt_lib_structures::{
     DevicesXML, DiskBootXML, DiskDriverXML, DiskReadOnlyXML, DiskSourceXML, DiskTargetXML, DiskXML,
-    DomainMemoryXML, DomainXML, FeaturesXML, GraphicsXML, NetworkDHCPRangeXML, NetworkDHCPXML,
+    DomainCPUTopology, DomainCPUXML, DomainMemoryXML, DomainXML, FeaturesXML, GraphicsXML,
-    NetworkDNSForwarderXML, NetworkDNSXML, NetworkDomainXML, NetworkForwardXML, NetworkIPXML,
+    NetworkDHCPRangeXML, NetworkDHCPXML, NetworkDNSForwarderXML, NetworkDNSXML, NetworkDomainXML,
-    NetworkXML, OSLoaderXML, OSTypeXML, XMLUuid, ACPIXML, OSXML,
+    NetworkForwardXML, NetworkIPXML, NetworkXML, OSLoaderXML, OSTypeXML, XMLUuid, ACPIXML, OSXML,
 };
 use crate::libvirt_rest_structures::LibVirtStructError::StructureExtraction;
 use crate::utils::disks_utils::Disk;
@@ -245,9 +245,18 @@ impl VMInfo {
                 memory: self.memory,
             },
 
-            on_poweroff: "preserve".to_string(),
+            cpu: DomainCPUXML {
+                mode: "host-passthrough".to_string(),
+                topology: Some(DomainCPUTopology {
+                    sockets: 1,
+                    cores: 1,
+                    threads: 1,
+                }),
+            },
+
+            on_poweroff: "destroy".to_string(),
             on_reboot: "restart".to_string(),
-            on_crash: "preserve".to_string(),
+            on_crash: "destroy".to_string(),
         })
     }
 

virtweb_backend/src/main.rs

@@ -35,6 +35,7 @@ async fn main() -> std::io::Result<()> {
     log::debug!("Create required directory, if missing");
     files_utils::create_directory_if_missing(AppConfig::get().iso_storage_path()).unwrap();
     files_utils::create_directory_if_missing(AppConfig::get().vnc_sockets_path()).unwrap();
+    files_utils::set_file_permission(AppConfig::get().vnc_sockets_path(), 0o644).unwrap();
     files_utils::create_directory_if_missing(AppConfig::get().disks_storage_path()).unwrap();
 
     let conn = Data::new(LibVirtClient(

virtweb_backend/src/utils/files_utils.rs

@@ -1,3 +1,4 @@
+use std::os::unix::fs::PermissionsExt;
 use std::path::Path;
 
 const INVALID_CHARS: [&str; 19] = [
@@ -19,6 +20,14 @@ pub fn create_directory_if_missing<P: AsRef<Path>>(path: P) -> anyhow::Result<()
     Ok(())
 }
 
+/// Update file permission
+pub fn set_file_permission<P: AsRef<Path>>(path: P, mode: u32) -> anyhow::Result<()> {
+    let mut perms = std::fs::metadata(path.as_ref())?.permissions();
+    perms.set_mode(mode);
+    std::fs::set_permissions(path.as_ref(), perms)?;
+    Ok(())
+}
+
 #[cfg(test)]
 mod test {
     use crate::utils::files_utils::check_file_name;