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+### Please describe the problem.
+
+If I run git annex fsck with the parallel jobs switch (e.g. -J2) it fails when it encounters files with non-ASCII filenames. It works fine without
+this switch.
+
+
+### What steps will reproduce the problem?
+
+Make a git annex repository with non-ascii filenames, add the files, and then run fsck with the parallel switch. A script to do this
+is included below.
+
+
+### What version of git-annex are you using? On what operating system?
+
+Arch Linux (64bit)
+
+git-annex version: 6.20160114-g297a744
+build flags: Assistant Webapp Webapp-secure Pairing Testsuite S3(multipartupload) WebDAV Inotify DBus DesktopNotify XMPP ConcurrentOutput DNS Feeds Quvi TDFA TorrentParser
+key/value backends: SHA256E SHA256 SHA512E SHA512 SHA224E SHA224 SHA384E SHA384 SHA3_256E SHA3_256 SHA3_512E SHA3_512 SHA3_224E SHA3_224 SHA3_384E SHA3_384 SKEIN256E SKEIN256 SKEIN512E SKEIN512 SHA1E SHA1 MD5E MD5 WORM URL
+remote types: git gcrypt S3 bup directory rsync web bittorrent webdav tahoe glacier ddar hook external
+local repository version: 5
+supported repository versions: 5 6
+upgrade supported from repository versions: 0 1 2 4 5
+
+### Please provide any additional information below.
+
+[[!format sh """
+#!/bin/bash
+set -o errexit -o nounset
+
+mkdir testing-repo
+cd testing-repo
+git init
+git annex init testing-repo
+
+make_fake_file() {
+  local filename="$1"
+  mkdir -p "$(dirname "$filename")"
+  echo "hello world" > "$filename"
+  git annex add "$filename"
+}
+
+export -f make_fake_file
+parallel -j1 'make_fake_file {}' <<EOF
+ASIAN KUNG-FU GENERATION/2012 - BEST HIT AKG/flac/folder.jpg
+ASIAN KUNG-FU GENERATION/2012 - BEST HIT AKG/flac/01 - 遥か彼方 - ASIAN KUNG-FU GENERATION.flac
+ASIAN KUNG-FU GENERATION/2012 - BEST HIT AKG/flac/02 - 未来の破片 - ASIAN KUNG-FU GENERATION.flac
+ASIAN KUNG-FU GENERATION/2012 - BEST HIT AKG/flac/03 - アンダースタンド - ASIAN KUNG-FU GENERATION.flac
+ASIAN KUNG-FU GENERATION/2012 - BEST HIT AKG/flac/04 - 君という花 - ASIAN KUNG-FU GENERATION.flac
+ASIAN KUNG-FU GENERATION/2012 - BEST HIT AKG/flac/05 - リライト - ASIAN KUNG-FU GENERATION.flac
+ASIAN KUNG-FU GENERATION/2012 - BEST HIT AKG/flac/06 - 君の街まで - ASIAN KUNG-FU GENERATION.flac
+ASIAN KUNG-FU GENERATION/2012 - BEST HIT AKG/flac/07 - ループ & ループ - ASIAN KUNG-FU GENERATION.flac
+ASIAN KUNG-FU GENERATION/2012 - BEST HIT AKG/flac/08 - ブラックアウト - ASIAN KUNG-FU GENERATION.flac
+ASIAN KUNG-FU GENERATION/2012 - BEST HIT AKG/flac/09 - ブルートレイン - ASIAN KUNG-FU GENERATION.flac
+ASIAN KUNG-FU GENERATION/2012 - BEST HIT AKG/flac/10 - 或る街の群青 - ASIAN KUNG-FU GENERATION.flac
+ASIAN KUNG-FU GENERATION/2012 - BEST HIT AKG/flac/11 - アフターダーク - ASIAN KUNG-FU GENERATION.flac
+ASIAN KUNG-FU GENERATION/2012 - BEST HIT AKG/flac/12 - 転がる岩、君に朝が降る - ASIAN KUNG-FU GENERATION.flac
+ASIAN KUNG-FU GENERATION/2012 - BEST HIT AKG/flac/13 - ムスタング - ASIAN KUNG-FU GENERATION.flac
+ASIAN KUNG-FU GENERATION/2012 - BEST HIT AKG/flac/14 - 藤沢ルーザー - ASIAN KUNG-FU GENERATION.flac
+ASIAN KUNG-FU GENERATION/2012 - BEST HIT AKG/flac/15 - 新世紀のラブソング - ASIAN KUNG-FU GENERATION.flac
+ASIAN KUNG-FU GENERATION/2012 - BEST HIT AKG/flac/16 - ソラニン - ASIAN KUNG-FU GENERATION.flac
+ASIAN KUNG-FU GENERATION/2012 - BEST HIT AKG/flac/17 - マーチングバンド - ASIAN KUNG-FU GENERATION.flac
+EOF
+
+git commit -m 'Add testing files.'
+git annex fsck -J2
+"""]]
+
+On my system this produces:
+
+[[!format sh """
+fsck ASIAN KUNG-FU GENERATION/2012 - BEST HIT AKG/flac/01 - git-annex: <stdout>: commitAndReleaseBuffer: invalid argument (invalid character)
+FAIL 1
+"""]]
+
+(The FAIL 1 output is just my terminal printing that the exit code was 1)
+
+### Have you had any luck using git-annex before? (Sometimes we get tired of reading bug reports all day and a lil' positive end note does wonders)
+
+Plenty. In fact I've been using it for a long time - I just only recently tried to use -J2 to speed up the fsck'ing :)
+