Bug 335205 – sys-fs/lvm2-2.02.73 dlopen errors when creating snapshot

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description App Deb 2010-08-30 07:49:49 UTC]

Happens with following kernel versions (haven't tested others yet):
gentoo-sources-2.6.35-r5
vanilla-sources-2.6.32.21

Trying to create an lvm2 snapshot using the 2.02.72 or 2.02.73 versions creates the following error:

lvcreate -L24G -s -n testsnapshot /dev/vgen/root

vgen-testsnapshot: event registration failed: 1150:3 libdevmapper-event-lvm2snapshot.so dlopen failed: /lib/liblvm2cmd.so.2.02: undefined symbol: floor
vgen/snapshot0: snapshot segment monitoring function failed.
Logical volume "testsnapshot" created

Reproducible: Always

Steps to Reproduce:




emerge --info

Portage 2.1.8.3 (default/linux/amd64/10.0/desktop/gnome, gcc-4.4.3, glibc-2.11.2-r0, 2.6.32.21 x86_64)
=================================================================
System uname: Linux-2.6.32.21-x86_64-AMD_Phenom-tm-_II_X6_1090T_Processor-with-gentoo-1.12.13
Timestamp of tree: Mon, 30 Aug 2010 06:00:01 +0000
app-shells/bash:     4.0_p37
dev-lang/python:     2.6.5-r3, 3.1.2-r4
dev-util/cmake:      2.8.1-r2
sys-apps/baselayout: 1.12.13
sys-apps/sandbox:    1.6-r2
sys-devel/autoconf:  2.13, 2.65
sys-devel/automake:  1.9.6-r3, 1.10.3, 1.11.1
sys-devel/binutils:  2.20.1-r1
sys-devel/gcc:       4.4.3-r2
sys-devel/gcc-config: 1.4.1
sys-devel/libtool:   2.2.6b
sys-devel/make:      3.81-r2
virtual/os-headers:  2.6.30-r1
ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="*"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/X11/xkb"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-O2 -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="assume-digests distlocks fixpackages news parallel-fetch protect-owned sandbox sfperms strict unmerge-logs unmerge-orphans userfetch"
GENTOO_MIRRORS="http://ftp.ntua.gr/pub/linux/gentoo/"
LANG="en_US.UTF-8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j6"
PKGDIR="/usr/portage/packages"
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="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage"
SYNC="rsync://gensrv/gentoo-portage"
USE="X a52 aac acl acpi alsa amd64 berkdb bluetooth branding bzip2 cairo cdr cli consolekit cracklib crypt cups cxx dbus dri dts dvb dvd dvdr eds emboss encode evo exif fam firefox flac fortran fuse gdbm gdu gif gnome gnome-keyring gpm gstreamer gtk hal iconv ipv6 jpeg lcms ldap libnotify mad mikmod mmx mng modules mp3 mp4 mpeg mudflap multilib nautilus ncurses nls nptl nptlonly ogg opengl openmp pam pango pcre pdf perl png policykit ppds pppd python qt3support qt4 readline reflection samba sdl session spell spl sse sse2 ssl svg sysfs tcpd tiff truetype unicode usb vdpau vorbis x264 xcb xml xorg xulrunner xv xvid 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="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" ELIBC="glibc" INPUT_DEVICES="evdev synaptics" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="vesa 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, FFLAGS, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

[Comment 1 Markus Passerschröer 2010-08-31 13:43:00 UTC]

Same here:

Creating a snapshot:

  Internal error: Maps lock 14217216 < unlock 14221312
  Internal error: Maps lock 14303232 < unlock 14307328
  vg-snapmysql: event registration failed: 7483:3 libdevmapper-event-lvm2snapshot.so dlopen failed: /lib/liblvm2cmd.so.2.02: undefined symbol: floor
  vg/snapshot0: snapshot segment monitoring function failed.
  Logical volume "snapmysql" created

Removing a snapshot:
  Internal error: Maps lock 14258176 < unlock 14262272
  Internal error: Maps lock 14278656 < unlock 14282752
  Logical volume "snapmysql" successfully removed

[Comment 2 App Deb 2010-09-01 14:05:48 UTC]

(In reply to comment #1)
> Same here:
> 
> Creating a snapshot:
> 
>   Internal error: Maps lock 14217216 < unlock 14221312
>   Internal error: Maps lock 14303232 < unlock 14307328
>   vg-snapmysql: event registration failed: 7483:3
> libdevmapper-event-lvm2snapshot.so dlopen failed: /lib/liblvm2cmd.so.2.02:
> undefined symbol: floor
>   vg/snapshot0: snapshot segment monitoring function failed.
>   Logical volume "snapmysql" created
> 
> Removing a snapshot:
>   Internal error: Maps lock 14258176 < unlock 14262272
>   Internal error: Maps lock 14278656 < unlock 14282752
>   Logical volume "snapmysql" successfully removed
> 

The "Internal error: Maps lock" errors are kernel related.
If you upgrade to the latest upstream kernels they will disappear.

[Comment 3 Tony Vroon (RETIRED) 2010-09-01 15:21:50 UTC]

Since -lm provides the floor symbol and --as-needed was recently made the default; I have a sneaking suspicion this may be a dropped library due to LDFLAGS problems.
An issue for us too:
Portage 2.1.8.3 (hardened/linux/amd64/10.0/no-multilib, gcc-4.3.4, glibc-2.11.2-r0, 2.6.32-hardened-r11 x86_64)
=================================================================
System uname: Linux-2.6.32-hardened-r11-x86_64-Dual-Core_AMD_Opteron-tm-_Processor_2218-with-gentoo-1.12.13
Timestamp of tree: Wed, 01 Sep 2010 11:15:01 +0000
app-shells/bash:     4.0_p37
dev-lang/python:     2.4.6, 2.5.4-r4, 2.6.5-r3
sys-apps/baselayout: 1.12.13
sys-apps/sandbox:    1.6-r2
sys-devel/autoconf:  2.65
sys-devel/automake:  1.7.9-r1, 1.10.3, 1.11.1
sys-devel/binutils:  2.20.1-r1
sys-devel/gcc:       3.4.6-r2, 4.3.4
sys-devel/gcc-config: 1.4.1
sys-devel/libtool:   2.2.6b
sys-devel/make:      3.81-r2
virtual/os-headers:  2.6.30-r1
ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="* -@EULA"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=opteron -O2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /var/bind"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/gconf /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-march=opteron -O2 -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="assume-digests distlocks fixpackages news parallel-fetch protect-owned sandbox sfperms strict unmerge-logs unmerge-orphans userfetch"
GENTOO_MIRRORS="http://distfiles.gentoo.org"
LANG="en_GB.UTF-8"
LC_ALL="en_GB.UTF-8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j4"
PKGDIR="/usr/portage/packages"
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="/usr/portage"
SYNC="rsync://portage-rsync.linx.net/gentoo-portage"
USE="amd64 bash-completion berkdb bzip2 cli cracklib crypt cups cxx diskio dri elf gnutls gpg hardened hpn iconv idled idn ipv6 justify lzo mmx modules mudflap ncurses network-cron no-old-linux nptl nptlonly pam pcre perl pic pppd python readline reflection session spl sse sse2 ssl sysfs unicode urandom xorg 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="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" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="fbdev glint intel mach64 mga neomagic nouveau nv r128 radeon savage sis tdfx trident vesa via vmware voodoo" 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, FFLAGS, INSTALL_MASK, LINGUAS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY

[Comment 4 Diego Elio Pettenò (RETIRED) 2010-09-01 15:35:50 UTC]

Fixed in 2.02.73-r1, patch sent upstream. Hope you don't mind me stepping in, Robin.