From 0acf41bf12fa2f0ecfb034f7643aff6b69fa2bfb Mon Sep 17 00:00:00 2001
From: Justin Garrison <justinleegarrison@gmail.com>
Date: Wed, 7 Oct 2026 20:57:57 -0700
Subject: [PATCH] cap davfs cache, skip nautilus thumbs on remote

---
 hosts/x-home.nix | 21 +++++++++++++++++++++
 hosts/x.nix      |  8 ++++++++
 2 files changed, 29 insertions(+)

diff --git a/hosts/x-home.nix b/hosts/x-home.nix
index 17f835d..42dd68f 100644
--- a/hosts/x-home.nix
+++ b/hosts/x-home.nix
@@ -72,6 +72,27 @@ in
       command = "nautilus --new-window /home/jgarr/downloads";
       name = "Open Downloads in Nautilus";
     };
+
+    # Keep Nautilus from thumbnailing files on the davfs2-backed Taildrive
+    # mount at /mnt/s/home. davfs2 downloads whole files to open them (WebDAV
+    # has no range-read / streaming semantics), so a single video thumbnail
+    # pulls the entire file through the network. "local-only" means Nautilus
+    # only generates thumbnails on local filesystems.
+    "org/gnome/nautilus/preferences" = {
+      show-image-thumbnails = "local-only";
+      # Also skip the directory-size counter on remote mounts for the same
+      # reason — otherwise Nautilus stat()s every file in the subtree.
+      show-directory-item-counts = "local-only";
+    };
+
+    # Belt and suspenders: exclude /mnt from the Tracker file-indexing miner
+    # so background indexing doesn't walk mounted shares.
+    "org/freedesktop/tracker3/miner/files" = {
+      ignored-directories = [
+        "po" "CVS" "core-dumps" "lost+found"
+        "/mnt"
+      ];
+    };
   };
 
   xdg.configFile."ghostty/config".text = ''
diff --git a/hosts/x.nix b/hosts/x.nix
index 09c2f97..6ea9f78 100644
--- a/hosts/x.nix
+++ b/hosts/x.nix
@@ -67,6 +67,11 @@ in
     settings.globalSection = {
       use_locks = false;
       ask_auth  = false;
+      # Cap cache at 200MB (default is 50MB but davfs2 can balloon well past
+      # it in practice when something like Nautilus walks the tree). This is
+      # the hard ceiling — davfs2 evicts the least-recently-used entries once
+      # the cache dir exceeds it.
+      cache_size = 200;
     };
   };
   environment.etc."davfs2/secrets" = {
@@ -74,6 +79,9 @@ in
     text = "/mnt/s/home guest guest\n";
   };
   systemd.mounts = [{
+    # davfs2 1.7.3 can't match hrefs when the request URL is percent-encoded,
+    # so `@` must be left literal (not %40) — the server returns `@` in <D:href>
+    # and davfs2 rejects responses whose paths don't match the request.
     what  = "http://100.100.100.100:8080/justinleegarrison@gmail.com/s/home/";
     where = "/mnt/s/home";
     type  = "davfs";
-- 
2.51.2