I believe this is fixed in recent versions of Unison.

  - B


On Oct 26, 2010, at 2:37 PM, Bernhard Froehler wrote:

> ** Tags added: maverick
> 
> -- 
> Unison produces "Fatal error: Corrupted archive" when switching on/off case sensitiveness
> https://bugs.launchpad.net/bugs/535211
> You received this bug notification because you are a member of Unison
> Developers, which is the registrant for Unison.
> 
> Status in Unison: the file synchronization tool: Confirmed
> Status in “unison” package in Ubuntu: Confirmed
> 
> Bug description:
> Binary package hint: unison
> 
> When a directory contains files whose name bare both capitalized and not capitalized letters (though not the same names, even ignoring case), the Unison archive is created in a way that switching on or off the "ignorecase" flag makes it crash.
> 
> Expected:
> 
> Unison re-sorts the archive to overcome the new user setting.
> 
> It should just proceed comparison normally
> (unless "ignorecase" was set to "false" before and now with "ignorecase=true" it happens that two files have the same name, e.g., "AaAaa" and "aaaAA")
> 
> Reproducing this bug:
> 
> $ mkdir tmp
> $ cd tmp
> $ mkdir a ; mkdir b
> $ ls > a/Aa
> $ ls > a/Ee
> $ ls > b/a
> $ ls > b/e
> $ unison a b -ignorecase=false -fastcheck=false
> Warning: No archive files were found for these roots, whose canonical names are:
> ...
> This can happen either
> because this is the first time you have synchronized these roots,
> or because you have upgraded Unison to a new version with a different
> archive format.
> 
> Update detection may take a while on this run if the replicas are
> large.
> 
> Unison will assume that the 'last synchronized state' of both replicas
> was completely empty.  This means that any files that are different
> will be reported as conflicts, and any files that exist only on one
> replica will be judged as new and propagated to the other replica.
> If the two replicas are identical, then no changes will be reported.
> 
> If you see this message repeatedly, it may be because one of your machines
> is getting its address from DHCP, which is causing its host name to change
> between synchronizations.  See the documentation for the UNISONLOCALHOSTNAME
> environment variable for advice on how to correct this.
> 
> Donations to the Unison project are gratefully accepted:
> http://www.cis.upenn.edu/~bcpierce/unison
> 
> Press return to continue.[<spc>]
> a              b
> file     ---->            Aa
> file     ---->            Ee
>          <---- file       a
>          <---- file       e
> 
> Proceed with propagating updates? [] g[BGN] Copying Aa...
> [END] Copying Aa
> ...
> [END] Copying e
> Synchronization complete  (4 items transferred, 0 skipped, 0 failures)
> $ unison a b -ignorecase=false -fastcheck=false
> $ unison a b -ignorecase=true -fastcheck=false
> Fatal error: Corrupted archive: the files are not correctely ordered in directory
> $ unison -version
> unison version 2.27.57
> $
> 
> ProblemType: Bug
> Architecture: i386
> Date: Tue Mar  9 18:51:30 2010
> DistroRelease: Ubuntu 9.10
> InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
> Package: unison 2.27.57-2ubuntu1
> ProcEnviron:
>  LANG=en_US.UTF-8
>  SHELL=/bin/bash
> ProcVersionSignature: Ubuntu 2.6.31-20.57-generic
> SourcePackage: unison
> Uname: Linux 2.6.31-20-generic i686
> 
> 
> 
>