distrotech / curlftpfs Goto Github PK

Does this version included with all the patches out there, for example here http://slackbuilds.org/slackbuilds/15.0/system/curlftpfs/patches/

I have curlftpfs on Slackware with all patches but still have issues like:

1. Input/Output error when reading/opening files on the FTP server.
2. Permission denied while reading/opening files on FTP server.
3. Hangs when browsing the FTP server.

Thanks.

Environment

• macOS 11.7.1
• macfuse: 4.4.1
• curlftpfs 0.9.2 libcurl/7.64.1 fuse/2.9

Cyberduck — Observation with Wireshark

• In Cyberduck I use FTP-SSL (port 21) with username/password inside the SSL tunnel.
• There is traffic when I login and for displaying the first directory.
• Then there is network silence.
• When I go into another directory, there's short network traffic.
• Then there's again absolute network silence until my next action.

✅ That's a frugal network usage how it should be in my opinion.

curlftps — Observation with Wireshark

• Connecting as FTP-SSL (port 21) via curlftps in FUSE

  curlftpfs -o ssl,uid=501,gid=20
  ftp://mycustomerid-backup:[email protected]/
  ~/Documents/Web/mydomain/backup-remote
  

• Ca 10 seconds of network traffic (SSL handshake, listing root directory, done; 246 ethernet packets).
• Then network silence.
• In Finder browse inside your locally mounted remote FTP server.
  • ❌ The network traffic starts and continues for minutes, never stops…
    • On a low level, ca 20-30 KB/sec, but nevertheless, a constant data stream.
    • Initially I had no idea why.

Finder and Spotlight can access quite recursively - Check these settings

1. System Preferences > Spotlight > Privacy:
   • Add the folder that acts as the mount point, e.g.
     ~/Documents/Web/mydomain/backup-remote
   • As soon as CURL mounts the volume as "macFUSE Volume 1 (curlftpfs)" that filepath is gone from Spotlight's exclusion list.
   • When you then try to drag'n'drop "macFUSE Volume 1 (curlftpfs)" onto the exclusion list again, it fails with an error message:
     Privacy List Error: The item couldn't be added or removed because of an unknown error.
   • ❌ An indication that FUSE and or curlftpfs do not properly integrate into the Mac filesystem mechanisms and its extensions light Spotlight (the search engine indexing mechanism of macOS)
     • ℹ️ Spotlight access anyhow seems not to be the reason for the constant network traffic. It's Finder. See next point.
2. Finder: Show folder size (disk usage) with the "Calculate all sizes" option causes heavy recursive FTP access

• Open any folder outside the FTP mount, e.g. your home directory, doesn't matter which one.
• Menu > View > View Options (⌘ J): [√] Calculate all sizes
  • That option gives you the size of a directory.
  • Finder needs to recurse and sum up all the file sizes below your folder of interest.
  • This is fine on your local fast SSD. But not so fine for remote disks (which Finder may not aware of to be remote disks when using an alternative filesystem driver such as FUSE).
  • Disable "Calculate all sizes". Click "Use as defaults". Now you may re-activate it, if you need it in the particular folder you had opened.
  • ✅ From now on network traffic is decent:
    • Access a folder, there's 2-15secs of network traffic (depending on the amount of items in it)
    • Then there's network silence until the next user action.
    • But still, a lot of interactions still cause traffic, Finder is quite data-hungry:
      • If you only select a folder (one mouse click) and not open it (double click) this still causes some lookups.
      • Noticeable traffic. But least it ends after 2-3secs.
    • So for frugal browsing a true FTP/S client such as Cyberduck may be better for you.