nixos containers: hopefully fix test failures

Closes #18377.

1 files changed, 5 insertions, 1 deletions

diff --git a/nixos/modules/tasks/filesystems.nix b/nixos/modules/tasks/filesystems.nix
index a66ece1020f8..3c822c8716d0 100644
--- a/nixos/modules/tasks/filesystems.nix
+++ b/nixos/modules/tasks/filesystems.nix
@@ -286,11 +286,15 @@ in
     # Sync mount options with systemd's src/core/mount-setup.c: mount_table.
     boot.specialFileSystems = {
       "/proc" = { fsType = "proc"; options = [ "nosuid" "noexec" "nodev" ]; };
-      "/sys" = { fsType = "sysfs"; options = [ "nosuid" "noexec" "nodev" ]; };
       "/run" = { fsType = "tmpfs"; options = [ "nodev" "strictatime" "mode=755" "size=${config.boot.runSize}" ]; };
       "/dev" = { fsType = "devtmpfs"; options = [ "nosuid" "strictatime" "mode=755" "size=${config.boot.devSize}" ]; };
       "/dev/shm" = { fsType = "tmpfs"; options = [ "nosuid" "nodev" "strictatime" "mode=1777" "size=${config.boot.devShmSize}" ]; };
       "/dev/pts" = { fsType = "devpts"; options = [ "nosuid" "noexec" "mode=620" "gid=${toString config.ids.gids.tty}" ]; };
+    } // optionalAttrs (!config.boot.isContainer) {
+      # systemd-nspawn populates /sys by itself, and remounting it causes all
+      # kinds of weird issues (most noticeably, waiting for host disk device
+      # nodes).
+      "/sys" = { fsType = "sysfs"; options = [ "nosuid" "noexec" "nodev" ]; };
     };
 
   };