Hallo, * Cédric Boutillier [Fri, Apr 10 2020, 11:16:00PM]: > Hi, > > On Thu, Apr 09, 2020 at 09:43:02PM +0530, Pirate Praveen wrote: > > boutil and terceiro also reported same problem yesterday in #debian-ruby irc > > (copying them). So I think the issue is not specific to me. > > > > boutil: hi! do you experience many "Hash Sum mismatch" when doing upgrades > > with apt-cache-ng? > > I indeed experience this often on my laptop (uptodate sid). On wifi, > about every second `apt update` fails with such a mismatch, either when > updating my system, or building a package with sbuild. > Ethernet connection is a bit better, but still it happens. I have a not > so fast ADSL line. > > I just got 5 times in a row this: > [...] > Err:19 http://ftp.fr.debian.org/debian testing/main DEP-11 64x64 Icons > Hash Sum mismatch > Hashes of expected file: > - Filesize:7050569 [weak] > - SHA256:802728a6bcbe5201c8cafa40286b9b10c8942beefe2922725056bfc706f86753 > - MD5Sum:570e3cdb335fed69c669af1610093c7b [weak] > Hashes of received file: > - SHA256:43b59d8c2ef9ac42b56f38108557a5e9b35a793a96a4268d6004a0d5e10865f9 > - MD5Sum:46fcee066fb69d7934cbbdf8d941273a [weak] > - Filesize:7050569 [weak] > Last modification reported: Fri, 10 Apr 2020 08:17:35 +0000 > Release file created at: Fri, 10 Apr 2020 15:23:29 +0000 > [...] > > My desktop station at work doesn't seem to show this behavior. It is > connected to a fast ethernet cable and fast internet connection.
Ok, guys, I still have no idea what is going on. While trying to hunt your bug down, I found a couple of other important issues on the way, but it is still not clear what happens in your case. Apart from the fact that the last TCP dump I saw was looking like sent trough a meat grinder. In thousands of request, I saw this issue only once and I figured that this file was pre-corrupted by another bug fixed in 3.4 and the download was resumed later. As for now, I can only suggest to make a few test runs with a specially instrumented version (see below). It enables the debug log stamps all over the place even in release build. Some of them can be controlled, therefore you should also set "debug=7" in the configuration. When the issue was reproduced, please stop ASAP, collect the /var/log/apt-cacher.err file and the suspicious package names or URLs and the IP&hostname of the client machine. Don't forget to compress apt-cacher.err, it might HUGE. And then please reinstall the unmodified apt-cacher-ng version. https://people.debian.org/~blade/experimental/apt-cacher-ng_3.5-1~1_amd64.deb Thanks, bye, best regards, Eduard. -- Abends kann man in der Altstadt sehr leicht versacken. -- Die Kölner U-Bahn (Marc-Uwe Kling: Falsch zugeordnete Zitate; eigentlich Wolfgang Overath)
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