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Bug 501322 - sys-apps/util-linux-2.24.1: misbehavior when listing mount points in /etc/fstab that involve symlinks
Summary: sys-apps/util-linux-2.24.1: misbehavior when listing mount points in /etc/fst...
Status: UNCONFIRMED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: [OLD] Core system (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Gentoo's Team for Core System packages
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-02-14 20:38 UTC by Juergen Rose
Modified: 2014-03-10 20:33 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


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Description Juergen Rose 2014-02-14 20:38:17 UTC
If I boot my system, it looks at the first view, as /home/ftp is not mounted:

rose@wildcat:/home/rose(1)$ df -T | grep home
/dev/mapper/vg1-home      ext4     257899908 120121180 124655144   50% /home_wildcat

rose@wildcat:/home/rose(2)$ ll /home_wildcat/ftp/
insgesamt 0

But if I look with 'mount' I see, that it is mounted:

rose@wildcat:/home/rose(3)$ mount | grep home
/dev/mapper/vg1-home on /home_wildcat type ext4 (rw,noatime,data=ordered)
/dev/mapper/vg1-ftp on /home_wildcat/ftp type xfs (rw,noatime,attr2,inode64,noquota)


If I umount /home_wildcat, I see with the next 'df' that /dev/mapper/vg1-ftp is mounted at /home_wildcat/ftp. It looks, if the system mount at first /dev/mapper/vg1-ftp on  /home_wildcat/ftp and then /dev/mapper/vg1-home on 
/home_wildcat.

In /etc/fstab I have:

root@wildcat:/root(4)# grep -u2  home /etc/fstab
/dev/vg1/portage   /usr/portage_wildcat                 ext2  noatime  1 2
/dev/vg1/distfiles /usr/local/portage/distfiles_wildcat ext2  noatime  1 2
/dev/vg1/home      /home_wildcat                        ext4  noatime  1 2
/dev/vg1/opt       /opt                                 ext3  noatime  1 2
/dev/vg1/tmp       /tmp                                 reiserfs  noatime  1 2
--
/dev/vg1/data      /data_wildcat                        ext4  noatime   1 2
/dev/vg1/src       /usr/src_wildcat                     ext3  noatime   1 2
/dev/vg1/ftp       /home/ftp                            xfs   noatime   1 2


The strange thing is, if I umount /dev/vg1/home and /dev/vg1/ftp, I have an empty directory /home_wildcat/ftp,  I remove this directory and reboot.

root@wildcat:/root(10)# rmdir /home_wildcat/ftp/
root@wildcat:/root(11)# date
Fri Feb 14 17:41:28 CET 2014
root@wildcat:/root(12)# ll /home_wildcat/
total 0
root@wildcat:/root(13)# date
Fri Feb 14 17:41:47 CET 2014


Then I have the same situation as before. 

root@wildcat:/root(1)# df -T
...
/dev/mapper/vg1-home   ext4  257899908 120121176 124655148  50% /home_wildcat

root@wildcat:/root(2)# date
Fri Feb 14 17:45:40 CET 2014
root@wildcat:/root(3)# umount /home_wildcat/
root@wildcat:/root(4)# ll /home_wildcat/
total 0
drwxr-xr-x 2 root root 6 Feb 14 17:32 ftp/
root@wildcat:/root(5)# df
...
/dev/mapper/vg1-ftp    136248320   32928 136215392   1% /home_wildcat/ftp

It looks if the directory /home_wildcat/ftp is created automatically during the booting. 

Anybody can help me, what is happen here?

Reproducible: Always




root@wildcat:/root(6)# emerge --info
Portage 2.2.8-r1 (default/linux/amd64/13.0/desktop, gcc-4.8.2, glibc-2.18-r1, 3.13.3-gentoo x86_64)
=================================================================
System uname: Linux-3.13.3-gentoo-x86_64-Intel-R-_Core-TM-2_Duo_CPU_T7500_@_2.20GHz-with-gentoo-2.2
KiB Mem:     3971760 total,   2740548 free
KiB Swap:   12582908 total,  12582908 free
Timestamp of tree: Fri, 14 Feb 2014 03:00:01 +0000
ld GNU ld (GNU Binutils) 2.24
distcc 3.1 x86_64-pc-linux-gnu [disabled]
app-shells/bash:          4.2_p45-r1
dev-java/java-config:     2.2.0
dev-lang/python:          2.7.6, 3.3.3
dev-util/cmake:           2.8.12.2
dev-util/pkgconfig:       0.28
sys-apps/baselayout:      2.2
sys-apps/openrc:          0.12.4
sys-apps/sandbox:         2.6-r1
sys-devel/autoconf:       2.13, 2.69
sys-devel/automake:       1.10.3, 1.11.6, 1.12.6, 1.14.1
sys-devel/binutils:       2.24-r2
sys-devel/gcc:            4.8.2
sys-devel/gcc-config:     1.8
sys-devel/libtool:        2.4.2
sys-devel/make:           4.0-r1
sys-kernel/linux-headers: 3.13 (virtual/os-headers)
sys-libs/glibc:           2.18-r1
Repositories: gentoo science sunrise lordvan dlan ago x-portage g-cpan g-octave
ACCEPT_KEYWORDS="amd64 ~amd64"
ACCEPT_LICENSE="* -@EULA PUEL Intel-SDP dlj-1.1 skype-eula skype-4.0.0.7-copyright googleearth AdobeFlash-11.x cadsoft Oracle-BCLA-JavaSE MakeMKV-EULA NVIDIA-CUDA Nero-AAC-EULA GIMPS"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=native -O2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt /var/lib/hsqldb"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5.5/ext-active/ /etc/php/cgi-php5.5/ext-active/ /etc/php/cli-php5.5/ext-active/ /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="-march=native -O2 -pipe"
DISTDIR="/usr/portage/distfiles"
FCFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="http://distfiles.gentoo.org"
LANG="en_US.UTF-8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j3"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage_wildcat"
PORTDIR_OVERLAY="/var/lib/layman/science /var/lib/layman/sunrise /var/lib/layman/lordvan /var/lib/layman/dlan /var/lib/layman/ago /usr/local/portage /var/lib/cpan /var/lib/g-octave"
USE="64bit R X Xaw3d a52 aac acl acpi admin afs alsa amd64 ao apache2 apng applet archive armadillo arpack asf aspell atlas audacious audiofile automap automount bash-completion berkdb blas blast bluetooth bluray boost branding bzip2 cairo cdda cddb cdf cdio cdparanoia cdr cgi chm cli cmake consolekit cracklib crypt css cups curl cxx daap db dbi dbm dbus declarative designer devhelp device-mapper dga dia dirac djvu doc dot dri ds2490 ds9097 ds9097u dts dv dvb dvd dvdr dvi dynamicplugin eds egl elf emacs emboss emf encode epiphany evo examples exif expat extensions extra extras faac faad fam ffmpeg fftw firefox fits flac fltk fontconfig foomaticdb fortran fortran95 fpm fpx fuse g3dvl garmin gcj gd gdal gdbm gdu gedit geoip geolocation geos gfortran gif gimp git glade glib glpk gml gmp gnome gnome-keyring gnome-print gnuplot gnutls gold gphoto2 gpm grammar graphics graphtft graphviz grass gsl gsm gstreamer gtk gtk3 gudev guile hddtemp hdf hdf5 hdri html http httpd hvm hwdb iconv icq icu id3 id3tag ide imagemagick imap inotify introspection ipod ipv6 ithreads jabber jadetex jbig john jpeg jpeg2k kate kdepim kdrive kerberos keymap kpathsea kvm ladspa lame lapack laptop latex lcms ldap lensfun libffi libkms libnotify libsamplerate live lm_sensors lua lzma lzo mad mail maildir mapnik math matroska media-library mercurial mikmod mmx mmxext mng mod modules mono motif mozilla mp3 mp4 mpeg mpi mplayer mtp multilib multimedia musepack musicbrainz mysql mysqli nautilus ncurses netcdf netpbm network networking networkmanager nfs nls nntp nptl nsplugin ntfs ntp numpy obex objc ocaml ocr octave odbc ofa ogdi ogg openexr opengl openmp openvg pam pango pcre pda pdf pdl2 perl plasma plotutils plugins png podcast policykit portaudio posix postgres postscript ppds preview-latex proj projectm projectx pstricks pulseaudio python python-bindings q16 q32 qemu qhull qt3support qt4 quicktime raw readline real reiserfs reports rhythmbox rle romio rpc rrdcgi rrdtool samba sasl schroedinger science sdk sdl secure-delete semantic-desktop server session shout sip slang slp smart smbclient smp sms sndfile snmp soap sockets sound soup sox speex spell sql sqlite sse sse2 ssl ssse3 startup-notification stlport subtitles subversion sudo suexec svg svm swig systemd szip t1lib tcl tcpd tex tex4ht texmacs tgif theora thesaurus thinkpad threads thunderbird tidy tiff tk tools truetype udev udisks unicode upower usb userlocales utempter v4l vaapi vala valgrind vdpau video virt-network virtualbox visio vorbis vpx wav webdav webdav-serf webkit wifi wmf wxwidgets x264 xa xattr xcb xemacs xetex xext xft xine xml xmlreader xmlrpc xpm xv xvid xvmc yaml youtube zlib zvbi" ABI_X86="64" ALSA_CARDS="hda-intel" APACHE2_MODULES="actions alias auth_basic auth_digest authn_anon authn_dbd authn_core authn_dbm authn_default authn_file authz_core authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgid dav dav_fs dav_lock dbd deflate dir disk_cache env expires ext_filter file_cache filter headers ident imagemap include info lbmethod_byrequests log_config logio mem_cache mime mime_magic negotiation proxy proxy_ajp proxy_balancer proxy_connect proxy_http rewrite setenvif slotmem_shm so socache_shmcb speling status unique_id unixd userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="canon fuji ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CURL_SSL="nss" DRACUT_MODULES="caps dm lvm mdraid syslog" DVB_CARDS="usb-wt220u" 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 ublox ubx" INPUT_DEVICES="keyboard mouse evdev synaptics void" KERNEL="linux" LCD_DEVICES="cfontz hd44780 mtxorb ncurses X lcd2usb lcdlinux png usblcd" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="de fr ru" NETBEANS_MODULES="apisupport cnd dlight enterprise ergonomics groovy gsf harness ide identity j2ee java mobility nb php profiler websvccommon xml" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-3" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_3" QEMU_SOFTMMU_TARGETS="arm i386 x86_64" QEMU_USER_TARGETS="arm i386 x86_64" RUBY_TARGETS="ruby19 ruby18" USERLAND="GNU" VIDEO_CARDS="intel displaylink" 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, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, SYNC, USE_PYTHON
Comment 1 Juergen Rose 2014-02-17 15:42:45 UTC
I get the same result with util-linux-2.24.1-r2.
Comment 2 Alexander Tsoy 2014-02-18 21:34:45 UTC
(In reply to Juergen Rose from comment #0)
> If I boot my system, it looks at the first view, as /home/ftp is not mounted:
> 
> rose@wildcat:/home/rose(1)$ df -T | grep home
> /dev/mapper/vg1-home      ext4     257899908 120121180 124655144   50%
> /home_wildcat
> 
> rose@wildcat:/home/rose(2)$ ll /home_wildcat/ftp/
> insgesamt 0
> 
> But if I look with 'mount' I see, that it is mounted:
> 
> rose@wildcat:/home/rose(3)$ mount | grep home
> /dev/mapper/vg1-home on /home_wildcat type ext4 (rw,noatime,data=ordered)
> /dev/mapper/vg1-ftp on /home_wildcat/ftp type xfs
> (rw,noatime,attr2,inode64,noquota)
> 
> 
> If I umount /home_wildcat, I see with the next 'df' that /dev/mapper/vg1-ftp
> is mounted at /home_wildcat/ftp. It looks, if the system mount at first
> /dev/mapper/vg1-ftp on  /home_wildcat/ftp and then /dev/mapper/vg1-home on 
> /home_wildcat.
> 
> In /etc/fstab I have:
> 
> root@wildcat:/root(4)# grep -u2  home /etc/fstab
> /dev/vg1/portage   /usr/portage_wildcat                 ext2  noatime  1 2
> /dev/vg1/distfiles /usr/local/portage/distfiles_wildcat ext2  noatime  1 2
> /dev/vg1/home      /home_wildcat                        ext4  noatime  1 2
> /dev/vg1/opt       /opt                                 ext3  noatime  1 2
> /dev/vg1/tmp       /tmp                                 reiserfs  noatime  1
> 2
> --
> /dev/vg1/data      /data_wildcat                        ext4  noatime   1 2
> /dev/vg1/src       /usr/src_wildcat                     ext3  noatime   1 2
> /dev/vg1/ftp       /home/ftp                            xfs   noatime   1 2

Hmm.. I'm not fully understand how /home and /home_wildcat are related to each other. There is no /home and /home_wildcat/ftp in your fstab. :)
Comment 3 Juergen Rose 2014-02-19 11:49:20 UTC
(In reply to Alexander Tsoy from comment #2)
> (In reply to Juergen Rose from comment #0)
> > If I boot my system, it looks at the first view, as /home/ftp is not mounted:
> > 
> > rose@wildcat:/home/rose(1)$ df -T | grep home
> > /dev/mapper/vg1-home      ext4     257899908 120121180 124655144   50%
> > /home_wildcat
> > 
> > rose@wildcat:/home/rose(2)$ ll /home_wildcat/ftp/
> > insgesamt 0
> > 
> > But if I look with 'mount' I see, that it is mounted:
> > 
> > rose@wildcat:/home/rose(3)$ mount | grep home
> > /dev/mapper/vg1-home on /home_wildcat type ext4 (rw,noatime,data=ordered)
> > /dev/mapper/vg1-ftp on /home_wildcat/ftp type xfs
> > (rw,noatime,attr2,inode64,noquota)
> > 
> > 
> > If I umount /home_wildcat, I see with the next 'df' that /dev/mapper/vg1-ftp
> > is mounted at /home_wildcat/ftp. It looks, if the system mount at first
> > /dev/mapper/vg1-ftp on  /home_wildcat/ftp and then /dev/mapper/vg1-home on 
> > /home_wildcat.
> > 
> > In /etc/fstab I have:
> > 
> > root@wildcat:/root(4)# grep -u2  home /etc/fstab
> > /dev/vg1/portage   /usr/portage_wildcat                 ext2  noatime  1 2
> > /dev/vg1/distfiles /usr/local/portage/distfiles_wildcat ext2  noatime  1 2
> > /dev/vg1/home      /home_wildcat                        ext4  noatime  1 2
> > /dev/vg1/opt       /opt                                 ext3  noatime  1 2
> > /dev/vg1/tmp       /tmp                                 reiserfs  noatime  1
> > 2
> > --
> > /dev/vg1/data      /data_wildcat                        ext4  noatime   1 2
> > /dev/vg1/src       /usr/src_wildcat                     ext3  noatime   1 2
> > /dev/vg1/ftp       /home/ftp                            xfs   noatime   1 2
> 
> Hmm.. I'm not fully understand how /home and /home_wildcat are related to
> each other. There is no /home and /home_wildcat/ftp in your fstab. :)


/home is a symbolic to /home_wildcat. This worked until now without problems.
Now I changed /etc/fstab and replaced /home/ftp by /home_wildcat/ftp. After the next reboot, everything was mounted as expected:

root@wildcat:/root(6)# df
Filesystem                1K-blocks      Used Available Use% Mounted on
/dev/sda3                 131980772  31158128  94095376  25% /
none                        1985880       996   1984884   1% /run
udev                          10240         0     10240   0% /dev
tmpfs                       1985880         0   1985880   0% /dev/shm
tmpfs                       1985880         0   1985880   0% /sys/fs/cgroup
/dev/mapper/vg1-data      351829148 158981384 174952752  48% /data_wildcat
/dev/mapper/vg1-tmp         8388348     79744   8308604   1% /tmp
/dev/mapper/vg1-distfiles  16772008   9995444   5937704  63% /usr/local/portage/distfiles_wildcat
/dev/mapper/vg1-portage     2046355    422810   1518688  22% /usr/portage_wildcat
/dev/mapper/vg1-home      257899908 120121176 124655148  50% /home_wildcat
/dev/mapper/vg1-opt         3997376    219016   3568648   6% /opt
/dev/mapper/vg1-var         8125880   1578428   6128024  21% /var
/dev/mapper/vg1-src        16382888   3298408  12245620  22% /usr/src_wildcat
/dev/mapper/vg1-vtmp       16776700    203368  16573332   2% /var/tmp
/dev/mapper/vg1-ftp       136248320     32928 136215392   1% /home_wildcat/ftp
root@wildcat:/root(7)# ll /home
lrwxrwxrwx 1 root root 12 Dec 30  2011 /home -> home_wildcat/
Comment 4 SpanKY gentoo-dev 2014-03-10 20:33:34 UTC
(In reply to Juergen Rose from comment #3)

ugh, please stop quoting in full replies.  it's just spamming at this point.

> /home is a symbolic to /home_wildcat.

util-linux has been reworking how it handles symlinks, so something might have broken

> This worked until now without problems.

unless i missed it, you didn't say what version was working for you.  so what is the last version that worked and the first that failed ?