[Users] [bug] End_of_file exception raised in loading archive

[c.buhtz at posteo.jp]

This is a know bug but I don't know a bug-trac system for unison. So I
use this list. Hope this is ok.

With DuckDuckGo.com I found to reports about this bug in the past
From Dec'14 on stackexchange
<http://unix.stackexchange.com/questions/176646/unison-end-of-file-exception>
and on that list from Feb'13
<http://comments.gmane.org/gmane.network.unison.general/9966>

The bug is still there. The workaround with -ignorearchvies work.

Some questions about this:

1. Why does this error happen? Of course the archive is corrupt. But
why? Did the user made something wrong?

2. Is it registred somewhere as an official bug?

3. What does -ignorearchiv really do? Why is this option there? What is
the difference between running unison with and without it? Why do we
need "archives" and why does it work without, too?

The is the complete debug-output of my unison run.

user at MONSTER:~$ unison mysync -auto -debug all
[startup] Preferences:
ui = graphic
host = 
server = false
prefsdocs = false
doc = 
version = false
silent = false
dumbtty = false
testserver = false
rest = mysync
showprev = false
selftest = false
confirmmerge = false
retry = 0
repeat = 
contactquietly = false
key = 
label = 
expert = false
height = 15
auto = true
maxthreads = 0
prefer = newer
force = 
sortnewfirst = false
sortbysize = false
keeptempfilesaftermerge = false
diff = diff -u CURRENT2 CURRENT1
backupdir = 
maxbackups = 2
backups = false
backupsuffix = 
backupprefix = .bak.$VERSION.
backup = Name *
backuploc = central
copymax = 1
copyquoterem = default
copythreshold = -1
copyprogrest = rsync --partial --append-verify --compress
copyprog = rsync --partial --inplace --compress
rsync = true
fastcheck = default
ignorelocks = false
dumparchives = false
ignorearchives = false
showarchive = false
rootsName = 
fat = false
allHostsAreRunningWindows = false
someHostIsRunningWindows = false
ignore = Path {.out, __pycache__}
confirmbigdel = true
batch = false
path = share
path = .MyAppData
path = Dokumente
root = ssh://user@tonne//home/user
root = /home/user
killserver = false
halfduplex = false
stream = true
addversionno = false
servercmd = 
sshargs = -C
rshargs = 
rshcmd = rsh
sshcmd = ssh
xferbycopying = true
sshversion = 
ignoreinodenumbers = false
links-aux = true
links = default
times = true
group = false
owner = false
numericids = false
dontchmod = false
perms = 1023
rsrc-aux = false
rsrc = default
maxerrors = 1
follow = Name {share}
unicodeCS = false
unicodeEnc = false
unicode = default
someHostIsInsensitive = false
ignorecase = default
timers = false
terse = false
logfile = /home/user/.unison/unison.log
log = true
debugtimes = false
debug = all
addprefsto = 
[remote] Shell connection: ssh (ssh, -l, user, tonne, -e, none, -C,
unison, -server) [globals] Checking path 'share' for expansions
[globals] Checking path '.MyAppData' for expansions
[globals] Checking path 'Dokumente' for expansions
Connected [//MONSTER//home/user -> //TONNE//home/user]
[startup] Roots: 
        /home/user
        ssh://user@tonne//home/user
  i.e. 
        /home/user
        ssh://user@tonne//home/user
  i.e. (in canonical order)
       /home/user
       //TONNE//home/user

[props] Setting permission mask to 1777 (1777 and 7777)
[stasher] initBackupsLocal
[stasher] d = /
[stasher] Prefix and suffix regexps for backup filenames have been
updated [server: stasher] initBackupsLocal
[server: stasher] d = /
[server: stasher] Prefix and suffix regexps for backup filenames have
been updated <>Starting new major GC cycle
!<>$[update] Loading archive
from /home/user/.unison/arefefc6eea86151c51302f1e7d0dbfa30 [exn]
Converting an End_of_file to Fatal: End_of_file exception raised in
loading archive (this indicates a bug!) End_of_file exception raised in
loading archive (this indicates a bug!) [server: update] Loading
archive from /home/user/.unison/ar77f6f7084b316030b00b93b033635304
[server: update] Setting archive for //TONNE//home/user



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