Bug 441768 – KDE 4.9.2 fails to mount an exfat-formatted usb drive: "Requested filesystem type is neither well-known nor in /proc/filesystems nor in /etc/filesystems"

• Status: RESOLVED NEEDINFO
• Product: Gentoo Linux

[Description PM 2012-11-04 18:41:14 UTC]

I have sys-fs/exfat-utils-0.9.8 and sys-fs/fuse-exfat-0.9.8-r1 installed. I can mount the drive manually using the 'mount' command:

# mount /dev/sdc1 /mnt/usbstick/
FUSE exfat 0.9.8
# mount
(...)
/dev/sdc1 on /mnt/usbstick type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096)

Yet if I try to tell Dolphin to mount the device, it responds: 

An error occurred while accessing '16gigowiec', the system responded: Żądana operacja zakończona niepowodzeniem.: Requested filesystem type is neither well-known nor in /proc/filesystems nor in /etc/filesystems

I have added the line "exfat" to /etc/filesystems, but it didn't help. 

This is a recent breakage, as I remember it used to work a couple of months ago.


Portage 2.2.0_alpha142 (default/linux/amd64/10.0/desktop, gcc-4.7.2, glibc-2.16.0, 3.6.6-pf x86_64)
=================================================================
System uname: Linux-3.6.6-pf-x86_64-Intel-R-_Core-TM-2_Duo_CPU_E7400_@_2.80GHz-with-gentoo-2.2
Timestamp of tree: Thu, 01 Nov 2012 20:30:01 +0000
ld GNU ld (GNU Binutils) 2.23
distcc 3.1 x86_64-pc-linux-gnu [disabled]
ccache version 3.1.8 [enabled]
app-shells/bash:          4.2_p37
dev-java/java-config:     2.1.12
dev-lang/python:          2.7.3-r2, 3.2.3-r1
dev-util/ccache:          3.1.8
dev-util/cmake:           2.8.9-r1
dev-util/pkgconfig:       0.27.1
sys-apps/baselayout:      2.2
sys-apps/openrc:          0.11.2
sys-apps/sandbox:         2.6
sys-devel/autoconf:       2.13, 2.69
sys-devel/automake:       1.4_p6-r1, 1.9.6-r3, 1.11.6, 1.12.4
sys-devel/binutils:       2.23
sys-devel/gcc:            4.6.3, 4.7.2
sys-devel/gcc-config:     1.7.3
sys-devel/libtool:        2.4.2
sys-devel/make:           3.82-r4
sys-kernel/linux-headers: 3.6 (virtual/os-headers)
sys-libs/glibc:           2.16.0
Repositories: gentoo multimedia bitcoin roslin sunrise java-overlay dupa
Installed sets: @system
ACCEPT_KEYWORDS="amd64 ~amd64"
ACCEPT_LICENSE="*"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -march=native -pipe -ggdb"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt /usr/share/themes/oxygen-gtk/gtk-2.0 /usr/share/themes/oxygen-gtk/gtk-3.0"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c"
CXXFLAGS="-O2 -march=native -pipe -ggdb"
DISTDIR="/usr/portage/distfiles"
EMERGE_DEFAULT_OPTS="--keep-going --quiet-build=n"
FCFLAGS="-O2 -march=native -pipe -ggdb"
FEATURES="assume-digests binpkg-logs ccache config-protect-if-modified distlocks ebuild-locks fixlafiles installsources merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms splitdebug strict unknown-features-warn unmerge-logs unmerge-orphans userfetch"
FFLAGS="-O2 -march=native -pipe -ggdb"
GENTOO_MIRRORS="http://ftp.spline.inf.fu-berlin.de/mirrors/gentoo/ http://ftp-stud.hs-esslingen.de/pub/Mirrors/gentoo/"
LANG="pl_PL.utf8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
LINGUAS="pl"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage/layman/multimedia /usr/local/portage/layman/bitcoin /usr/local/portage/layman/roslin /usr/local/portage/layman/sunrise /usr/local/portage/layman/java-overlay /usr/local/portage/moje"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="X Xaw3d a52 aac aalib acl acpi alsa amd64 amr amrnb amrwb apng async audiofile automount avahi bash-completion berkdb bfq bineditor bluetooth bluray branding bzip2 cairo cdda cddb cdparanoia cdr chdir cli consolekit cracklib crypt css cuda cups curl cxx dbus dirac disk-partition divx djvu dri dts dvd dvdr editor emboss emovix enca encode exchange exif faac faad fam fat ffmpeg fftw firefox firefox3 flac fontconfig fortran g3dvl gd gdbm geoip gif glitz gmedia gphoto2 gpm gtk hddtemp iconv id3 id3tag imagemagick inotify iostats ipod jpeg kde kde4 kdehiddenvisibility kipi kompare kpathsea kqemu ladspa lame laptop lastfm latex lcms libass libcaca libnotify libsamplerate lm_sensors lzma lzo mad matroska midi mjpeg mmap mmx mmxext mng modules mp3 mp3tunes mp4 mpeg mplayer mtp mudflap multilib musicbrainz ncurses networkmanager nls nptl nsplugin ntfs nvidia ogg okteta openal opencl opencore-amr opengl openmp optimized-qmake pam pango pch pcre pdf plasma png policykit portage ppds pppd private-headers pulseaudio qt3 qt3support qt4 qthelp raster readline realmedia roe scanner schroedinger sdl secure-delete semantic-desktop sensord session shaders slang sndfile solver soundtouch sourceview sparse spell sse sse2 sse3 sse4 sse41 sse4_1 sse4a ssl ssse3 startup-notification suid svg swat symlink syslog tcpd theora threads tiff truetype udev udisks unicode upnp upower usb vaapi vamp vcd vdpau vorbis wifi wmf wmp wxwidgets wxwindows x264 xcb xcomposite xml xscreensaver xv xvid xvmc zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="pl" PHP_TARGETS="php5-3" PYTHON_TARGETS="python3_2 python2_7" QEMU_SOFTMMU_TARGETS="x86_64 i386" QEMU_USER_TARGETS="x86_64 i386" RUBY_TARGETS="ruby18 ruby19" USERLAND="GNU" VIDEO_CARDS="nvidia" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset:  CPPFLAGS, CTARGET, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON

[Comment 1 Samuli Suominen (RETIRED) 2012-11-04 19:24:15 UTC]

Both UDisks1 and UDisks2 already have exfat listed internally as well known file system.

sys-fs/udisks:0 says:

src/device.c:  "exfat",

sys-fs/udisks:2 says:

src/udiskslinuxfilesystem.c:  "exfat",

Does 'gvfs-mount' work from command-line? Requires sys-fs/gvfs built with USE="udev udisks -gdu fuse" for UDisks2 support and USE="udev -udisks gdu fuse" for UDisks1.

I don't know what kind of FUSE layer KDE has in it's handling of them, but right now looking, this seems to be a bug in it, or lack of the layer entirely :P

Does changing "exfat-fuse" to "exfat_fuse" in 99-exfat.rules change anything?
Or possibly flipping the order of the ENV's?

Does adding 'fuseblk' to /etc/filesystems help?

Do a bit more digging before filing the bug, so I don't have to ask for these basics just to determine who gets the bug :P

[Comment 2 PM 2012-11-05 12:38:53 UTC]

I found a solution: instead of "exfat" I added "exfat-fuse" to /etc/filesystems.

I still consider this a bug, IMHO it should work out of the box without any workarounds.

[Comment 3 Samuli Suominen (RETIRED) 2013-01-21 14:28:44 UTC]

Please recompile your kdelibs in a way it uses sys-fs/udisks:2 instead of the dead sys-fs/udisks:0. We have bug 424157 for that. It's overdue anyway.

[Comment 4 Samuli Suominen (RETIRED) 2013-01-21 14:31:19 UTC]

(In reply to comment #3)
> Please recompile your kdelibs in a way it uses sys-fs/udisks:2 instead of
> the dead sys-fs/udisks:0. We have bug 424157 for that. It's overdue anyway.

And use at least >=1.0.0 of fuse-exfat/exfat-utils. I think I had bad udev rules being installed.

[Comment 5 PM 2013-01-21 15:17:52 UTC]

>And use at least >=1.0.0 of fuse-exfat/exfat-utils.

The tree only has 0.9.8.

[Comment 6 Samuli Suominen (RETIRED) 2013-01-21 15:33:43 UTC]

(In reply to comment #5)
> >And use at least >=1.0.0 of fuse-exfat/exfat-utils.
> 
> The tree only has 0.9.8.

It has 1.0.0 but the mirrors take a while to catch up. Try again in hour or two.

[Comment 7 Andreas K. Hüttel 2013-03-09 21:25:26 UTC]

Do you still have this problem?

[Comment 8 Johannes Huber (RETIRED) 2013-04-22 08:51:15 UTC]

(In reply to comment #7)
> Do you still have this problem?