Your message dated Sat, 3 Nov 2007 22:22:01 +0000
with message-id <[EMAIL PROTECTED]>
and subject line Bug#447646: apt-cacher: upstream server caught mid-sync causes
indefinite false hits and constant client MD5Sum mismatch errors
has caused the attached Bug report to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what I am
talking about this indicates a serious mail system misconfiguration
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Debian bug tracking system administrator
(administrator, Debian Bugs database)
--- Begin Message ---
Package: apt-cacher
Version: 1.5.5
Severity: grave
Justification: renders package unusable
When upstream server is caught mid-sync and apt-cacher downloads only
a partial file,
apt-get on client identifies it as a MD5Sum mismatch error.
Without apt-cacher, this is easily handled- one simply runs "apt-get
update && apt-get install $pkgs" again.
With apt-cacher, the the partial file continues to be returned,
resulting in a "stuck" condition in the
clients.
The code at issue appears to be...
if (-f $complete_file) {
# not much to do if complete
# Possibly checksum cached file before delivery
$cache_status = "HIT";
debug_message("$cache_status");
}
... in /usr/share/apt-cacher/apt-cacher.
Apparently apt-cacher assumes that a file downloaded with good status
is complete, which makes it unusable for common situations, such as...
- security bulletin- update package xx (people run apt-get update,
catch mirror in mid-update and are stuck)
- new release- many people run apt-get update on stable as mirrors
are still in mid-sync
- rapidly-changing repositories such as testing, or worse, sid
And when it happens, apt-cacher appears to be stuck until the size or
md5sum changes, i.e. for days or weeks. I expect most people who hit
this just give up and uninstall apt-cacher.
Workaround is to move cached packages out of the way, e.g....
# for f in $(find /var/cache/apt-cacher/ -type f | grep "$pkg"); do
mv $f $f..junk; done
That forces a MISS and a re-download.
-- System Information:
Debian Release: 4.0
Architecture: i386 (i686)
Kernel: Linux 2.6.16-2-686-smp (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=locale: Cannot
set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/bash
Versions of packages apt-cacher depends on:
ii bzip2 1.0.3-6 high-quality block-sorting file co
ii libwww-perl 5.805-1 WWW client/server library for Perl
ii perl 5.8.8-7 Larry Wall's Practical Extraction
apt-cacher recommends no packages.
-- debconf information:
--
Best Regards.
Anthony Godshall
--- End Message ---
--- Begin Message ---
I am closing this as using checksumming will pick up the mismatch and you
can force refresh of a cached file by calling apt with
-o Acquire::http::No-Cache=true.
If you still find this a problem, feel free to reopen.
Thanks,
Mark
--- End Message ---
