As in the summary, while umounting filesystems the fuser is not able to detect open sockets and in my example fail to umount /home as is 'in use'. Thats because ssh-agent's socket file is in my $HOME. Thats really nasty. The workaround is put 'killall ssh-agent' in for example /etc/local.d/kill-ssh-agents.stop script, but that will handle only ssh-agent. Reproducible: Always
Please post your emerge --info with any bug report that you post. Also, I need the steps to reproduce this bug. Thanks, William
the emerge --info is usualy at least useless, the problem is with using fuser, anyway.... Portage 2.2.0_alpha84 (default/linux/amd64/10.0, gcc-4.5.3, glibc-2.13-r4, 3.1.9-frontier x86_64) ================================================================= System uname: Linux-3.1.9-frontier-x86_64-Intel-R-_Core-TM-_i5_CPU_M_480_@_2.67GHz-with-gentoo-2.1 Timestamp of tree: Wed, 18 Jan 2012 13:00:01 +0000 ccache version 3.1.7 [enabled] app-shells/bash: 4.2_p20 dev-lang/python: 2.7.2-r3, 3.2.2 dev-util/ccache: 3.1.7 dev-util/cmake: 2.8.6-r4 dev-util/pkgconfig: 0.26 sys-apps/baselayout: 2.1 sys-apps/openrc: 0.9.8.1 sys-apps/sandbox: 2.5 sys-devel/autoconf: 2.13, 2.68 sys-devel/automake: 1.9.6-r3, 1.11.2 sys-devel/binutils: 2.21.1-r1 sys-devel/gcc: 4.5.3-r1 sys-devel/gcc-config: 1.5-r2 sys-devel/libtool: 2.4.2 sys-devel/make: 3.82-r3 sys-kernel/linux-headers: 3.1 (virtual/os-headers) sys-libs/glibc: 2.13-r4 Repositories: gentoo foo-overlay lcd-filtering Installed sets: ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="*" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -pipe -march=native -mtune=generic -fno-var-tracking" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt" 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" CXXFLAGS="-O2 -pipe -march=native -mtune=generic -fno-var-tracking" DISTDIR="/var/portage/distfiles" FEATURES="assume-digests binpkg-logs ccache distlocks ebuild-locks fixlafiles news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch" FFLAGS="" GENTOO_MIRRORS="http://distfiles.gentoo.org" LC_ALL="en_US.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="en pl" MAKEOPTS="--quiet -j4" PKGDIR="/var/portage/packages" PORTAGE_COMPRESS="bzip2" PORTAGE_COMPRESS_FLAGS="-9" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/var/portage/tree" PORTDIR_OVERLAY="/var/lib/layman/foo-overlay /var/lib/layman/lcd-filtering" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X acl amd64 berkdb bzip2 cli cracklib crypt cups cxx dbus dri fontconfig fortran gdbm gif gpm iconv ipv6 jpeg lcdfilter logrotate mmx modules mudflap multilib ncurses nls nptl nptlonly opengl openmp pam pcre png pppd readline session sse sse2 ssl sysfs tcpd threads truetype unicode vim-syntax xft xorg zlib zsh-completion" 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="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 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="synaptics evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en pl" PHP_TARGETS="php5-3" QEMU_SOFTMMU_TARGETS="x86_64 i386" QEMU_USER_TARGETS="x86_64 i386" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="nouveau 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, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, PORTAGE_BUNZIP2_COMMAND, PORTAGE_RSYNC_EXTRA_OPTS Steps to reproduce: ssh-agent -s -a /path/to/mountpoint/foo.socket just run ssh-agent with the socket outside rootfs.
not a bug in openrc. reproduces fine for me, thanks for that. fuser does open /proc/net/unix, so that's good ...
How is psmisc-22.15?
same behavior. here's the copy & paste to reproduce: mkdir -p /mnt/tmp mount -t tmpfs tmpfs /mnt/tmp eval $(ssh-agent -s -a /mnt/tmp/foo.socket) fuser -v / |& grep $SSH_AGENT_PID fuser -v /mnt/tmp |& grep $SSH_AGENT_PID kill $SSH_AGENT_PID you can see that the first fuser identifies the ssh-agent, but the 2nd one doesn't. i've long mounted my /tmp as tmpfs and always wondered why on shutdown, i get the "could not unmount as it's in use" even though fuser should have found + killed the stuff.
The quick_and_dirty solution would be run lsof to find open sockets on mountpoint and kill them. lsof -U | awk -v mountpoint="^/home/" '$5 ~ /^unix$/ && $9 ~ mountpoint { system("kill "$2) }' instead of /home/ there can be mountpoint="^${mountpoint}". The awk is example, that can be done with pure sh. I would vote for adding something like it as a fallback to fuser being unable to find open sockets. I found some reports about fuser being unable to find open socket from 2007, also, busybox's fuser can't find it either.
22.16 in Portage and reported this to upstream (see URL field)
(In reply to comment #6) perhaps, but that's not something i want to add to our init scripts
+*psmisc-22.19-r1 (31 Aug 2012) + + 31 Aug 2012; Samuli Suominen <ssuominen@gentoo.org> +psmisc-22.19-r1.ebuild: + Upstream patch for fuser to work with unix sockets wrt #398811. Thanks to + Piotr Karbowski and Mike Frysinger. http://psmisc.git.sourceforge.net/git/gitweb.cgi?p=psmisc/psmisc;a=commit;h=be54c4182c7826ab633d3f39904db441e960e497
