Re: [gentoo-user] Re: All sorts of digest verification failures

[Peter Humphrey <peter@prh.myzen.co.uk>]

On Thursday 12 Nov 2015 18:45:44 Alan McKinnon wrote:
> On 12/11/2015 18:42, Grant Edwards wrote:
> > On 2015-11-12, <wabenbau@gmail.com> <wabenbau@gmail.com> wrote:
> >> Grant Edwards <grant.b.edwards@gmail.com> wrote:
> >>> After an emerge --sync that appeared to work with no problems, my
> >>> "emerge -auvND world" command is reporting that the Changelong files
> >>> are broken for about 2/3 of the packages it wants to update:
> >>> 
> >>> !!! Digest verification failed:
> >>> !!! /usr/portage/dev-libs/libxml2/ChangeLog
> >>> !!! Reason: Filesize does not match recorded size
> >>> !!! Got: 5221
> >>> !!! Expected: 5038
> >>> 
> >>> !!! Digest verification failed:
> >>> !!! /usr/portage/app-text/iso-codes/ChangeLog
> >>> !!! Reason: Filesize does not match recorded size
> >>> !!! Got: 4195
> >>> !!! Expected: 4014
> >>> 
> >>> [ ... and so on for another dozen or so packages ... ]
> >>> 
> >>> I removed the emerge timestamp, sync'ed again, and got the same
> >>> result.  Based on past experiences, I'm guessing that if I wait a day
> >>> or two and sync again the problems will go away.
> >>> 
> >>> But I am curious what causes these temporary breakages.  Does anybody
> >>> know how this happens?
> >> 
> >> Try it again. I just synced and received new Manifest and Changelog
> >> files for every(?) package of the portage tree. But no report of bad
> >> digest.
> > 
> > Just for fun, I removed the files from the portage tree that were
> > reported as bad, and did another sync.  Apparently, the rsync host
> > that got chosen that time had just been updated, because it downloaded
> > 313 files (I didn't pay much attention to which files exactly), and
> > now emerge is happy again.
> > 
> > I assume that the portage trees on the rsync servers from my first two
> > attempts were in some intermediate state with new manifist files and
> > old ChangeLog files or vice versa.
> > 
> > In the past I've wondered how portage tree updates and rsync servers
> > are managed so that people don't run into problems like this more
> > often.
> 
> The dev are doing some $MAGIC to reinstate ChangeLogs and the first run
> is expected to take a while (i.e. several hours). I suppose you can
> expect some breakage till it finishes.

Yes, and I got 74,000 files transferred this morning. And yesterday a couple 
of manifests were wrong, but they were corrected soon enough.

> It's being discussed and tracked on gentoo-dev, you can drop a mail
> there with specifics to let the devs know what's happening.

-- 
Rgds
Peter