This is a bug in 20.04 as well. I have no Release file, this is a private, unsigned repository, only Packages.xz. On first run, apt update first works. On the second run apt update issues a HTTP GET with an If- Modified-Since header:
GET /deb/Packages.xz HTTP/1.1 Host: XXX Cache-Control: max-age=0 If-Modified-Since: Sat, 18 Apr 2020 14:19:16 GMT User-Agent: Debian APT-HTTP/1.3 (1.6.12) Apache HTTPD correctly responds that there was no change: HTTP/1.1 304 Not Modified Date: Sun, 19 Apr 2020 20:53:02 GMT Server: Apache/2.4.18 (Ubuntu) ETag: "960-5a39159dd8574" Instead of using the existing downloaded version apt update tries to download Packages.bz2 etc. and finally it displays: root@pipa11:~# apt update Hit:1 http://mirror.hk.leaseweb.net/ubuntu bionic InRelease Hit:2 http://mirror.hk.leaseweb.net/ubuntu bionic-updates InRelease Hit:3 http://mirror.hk.leaseweb.net/ubuntu bionic-backports InRelease Ign:4 http://XXX/deb InRelease Ign:5 http://XXX/deb Release Hit:6 http://security.ubuntu.com/ubuntu bionic-security InRelease Hit:7 http://XXX/deb Packages Ign:7 http://XXX/deb Packages Ign:7 http://XXX/deb Packages Ign:7 http://XXX/deb Packages Ign:7 http://XXX/deb Packages Ign:7 http://XXX/deb Packages Ign:7 http://fXXX/deb Packages Err:7 http://fXXX/deb Packages lzma_read: Read error (7) Reading package lists... Done E: Failed to fetch http://XXX/deb/Packages lzma_read: Read error (7) E: Some index files failed to download. They have been ignored, or old ones used instead. The exit code is 100. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1750625 Title: update misinterprets 304 response on Packages.gz To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1750625/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
