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Bug 494738 - sys-fs/e4rat-0.2.3-r1 - e4rat-realloc: Cannot open file: /sys/fs/ext4/dm-N/mb_stream_req
Summary: sys-fs/e4rat-0.2.3-r1 - e4rat-realloc: Cannot open file: /sys/fs/ext4/dm-N/mb...
Status: RESOLVED OBSOLETE
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: [OLD] Core system (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Pacho Ramos
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2013-12-19 12:04 UTC by Norman Back
Modified: 2014-02-25 20:34 UTC (History)
0 users

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


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Description Norman Back 2013-12-19 12:04:38 UTC
e4rat-realloc processes my system partitions correctly but fail with 'Cannot open file: /sys/fs/ext4/dm-8/mb_stream_req' on my home partion. The failure is due to e4rat-realloc attibuting /home/norman to /dev/dm-8 but it is mounted on dm-56.

mount | grep norman
/dev/mapper/vgsdb7-home.norman on /home/norman type ext4 (rw,noatime,nodiratime,barrier=1,commit=600)
ls -l /dev/mapper/vgsdb7-home.norman
lrwxrwxrwx 1 root root 8 Dec 19 11:38 /dev/mapper/vgsdb7-home.norman -> ../dm-56

/dev/dm-8 is an lv not currently open
lvs /dev/mapper/syssdc7-slash
  LV    VG      Attr       LSize Pool Origin Data%  Move Log Cpy%Sync Convert
  slash syssdc7 -wi-a----- 8.00g

ls -l /dev/mapper/* | grep dm-8$
lrwxrwxrwx 1 root root       7 Dec 19 11:47 /dev/mapper/syssdc7-slash -> ../dm-8

ls /sys/fs/ext4
dm-0  dm-1  dm-2  dm-3  dm-4  dm-5  dm-56  dm-70  features

emerge --info
Portage 2.2.7 (default/linux/amd64/13.0/desktop, gcc-4.7.3, glibc-2.16.0, 3.12.5-gentoo-65 x86_64)
=================================================================
System uname: Linux-3.12.5-gentoo-65-x86_64-AMD_Phenom-tm-_II_X4_965_Processor-with-gentoo-2.2
KiB Mem:    16446280 total,  14945708 free
KiB Swap:   34602996 total,  34602996 free
Timestamp of tree: Thu, 19 Dec 2013 02:15:01 +0000
ld GNU ld (GNU Binutils) 2.23.1
distcc 3.1 x86_64-pc-linux-gnu [disabled]
ccache version 3.1.9 [disabled]
app-shells/bash:          4.2_p45
dev-java/java-config:     2.1.12-r1
dev-lang/python:          2.7.5-r3, 3.3.2-r2
dev-util/ccache:          3.1.9
dev-util/cmake:           2.8.11.2
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:       1.9.6-r3, 1.11.6, 1.12.6, 1.13.4
sys-devel/binutils:       2.23.1
sys-devel/gcc:            4.6.3, 4.7.3-r1
sys-devel/gcc-config:     1.7.3
sys-devel/libtool:        2.4.2
sys-devel/make:           3.82-r4
sys-kernel/linux-headers: 3.9 (virtual/os-headers)
sys-libs/glibc:           2.16.0
Repositories: gentoo local ikelos systemd
Installed sets: @kde-4.11, @kernels
ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="*"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=amdfam10 -mtune=amdfam10 -O2 -pipe"
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 /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/splash /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c"
CXXFLAGS="-march=amdfam10 -mtune=amdfam10 -O2 -pipe"                                                                                                                 
DISTDIR="/mnt/portage.autofs/distfiles"                                                                                                                              
EMERGE_DEFAULT_OPTS="--with-bdeps=y -j9 --load-average=8 --quiet-build=y"                                                                                            
FCFLAGS="-O2 -pipe"                                                                                                                                                  
FEATURES="assume-digests binpkg-logs buildpkg config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch parallel-install preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync"                                 
FFLAGS="-O2 -pipe"                                                                                                                                                   
GENTOO_MIRRORS="http://mirror.qubenet.net/mirror/gentoo/ http://mirrors.linuxant.fr/distfiles.gentoo.org/ ftp://mirror.qubenet.net/mirror/gentoo/ http://www.mirrorservice.org/sites/www.ibiblio.org/gentoo/ http://ftp.snt.utwente.nl/pub/os/linux/gentoo ftp://ftp.free.fr/mirrors/ftp.gentoo.org/ http://mirror.leaseweb.com/gentoo/ http://gentoo.modulix.net/gentoo/ http://linux.rz.ruhr-uni-bochum.de/download/gentoo-mirror/ ftp://mirror.bytemark.co.uk/gentoo/"                                      
LANG="en_GB.UTF-8"                                                                                                                                                   
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j9 --load-average=8"
PKGDIR="/mnt/portage.autofs/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/portage/"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage /var/lib/layman/ikelos /var/lib/layman/systemd"
SYNC="rsync://datastoreone/gentoo-portage"
USE="3dnow X a52 aac accessibility acl acpi alsa amarok amd64 amr authdaemond bash-completion berkdb bluetooth bluray branding bzip2 cairo caps cdda cdr cli consolekit cracklib crypt cups cxx dbus dri dts dv dvd dvdr dvdread emboss encode exif fam firefox flac fortran gdbm gif gpm gtk iconv ieee1394 ipv6 jpeg kde lcms ldap libnotify lm_sensors lock mad mmx mng modules mp3 mp4 mpeg mudflap multilib mysql ncurses network nls nptl ofx ogg opengl openmp oss pam pango pcre pdf png policykit ppds qt3 qt3support qt4 readline samba sasl sdl semantic-desktop session spell sse sse2 ssl startup-notification svg tcpd thunar tiff truetype udev udisks uk_bleb uk_rt unicode upower usb v4l v4l2 vdpau vorbis wxwidgets x264 xcb xine xinerama xml xv xvid xvmc zlib" ABI_X86="64" 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" APACHE2_MODULES="actions alias auth_basic auth_digest authn_anon authn_dbd authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock dbd deflate dir disk_cache env expires ext_filter file_cache filter headers ident imagemap include info log_config logio mem_cache mime mime_magic negotiation proxy proxy_ajp proxy_balancer proxy_connect proxy_http rewrite setenvif so speling status unique_id userdir usertrack vhost_alias cgi cgid" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" DRACUT_MODULES="lvm syslog" DVB_CARDS="usb-dib0700" 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" GRUB_PLATFORMS="pc" INPUT_DEVICES="evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="en en_GB" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_3" QEMU_SOFTMMU_TARGETS="i386 x86_64" QEMU_USER_TARGETS="i386 x86_64" RUBY_TARGETS="ruby19 ruby18" SANE_BACKENDS="hp5590 hp net abaton agfafocus apple artec artec_eplus48u as6e avision bh canon canon630u canon_dr canon_pp cardscan coolscan coolscan2 coolscan3 dc210 dc240 dc25 dell1600n_net dmc epjitsu epson epson2 fujitsu genesys gt68xx hp3500 hp3900 hp4200 hp5400 hpljm1005 hpsj5s hs2p ibm kodak kvs1025 kvs20xx leo lexmark ma1509 magicolor matsushita microtek microtek2 mustek mustek_pp mustek_usb nec niash p5 pie pixma plustek plustek_pp pnm qcam ricoh rts8891 s9036 sceptre sharp sm3600 sm3840 snapscan sp15c st400 stv680 tamarack teco1 teco2 teco3 test u12 umax umax1220u umax_pp xerox_mfp" 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 Norman Back 2013-12-19 12:06:52 UTC
Full output from e4rat-realloc.

e4rat-realloc /var/lib/e4rat/startup.log 
Parsing file /var/lib/e4rat/startup.log
   2/3774 file(s) are not available
  56/3774 file(s) are presently not writable.
   5/3774 file(s) have no blocks.
   1/3774 file(s) are sparse-files which will retain gaps of unallocated blocks.
Defrag mode: locality group
Processing 702 file(s) on device /dev/dm-0 (mount-point: /)
Total fragment count before/afterwards/best-case:  153/59/1
Processing 63 file(s) on device /dev/dm-1 (mount-point: /opt)
Total fragment count before/afterwards/best-case:  23/25/1
There is no improvement possible.
Processing 132 file(s) on device /dev/dm-2 (mount-point: /var/tmp)
Total fragment count before/afterwards/best-case:  18/10/1
Processing 1 file(s) on device /dev/dm-4 (mount-point: /var/log)
Total fragment count before/afterwards/best-case:  1/1/1
There is no improvement possible.
Processing 2448 file(s) on device /dev/dm-5 (mount-point: /usr)
Total fragment count before/afterwards/best-case:  91/71/1
Processing 365 file(s) on device /dev/dm-8 (mount-point: /home/norman)
Cannot open file: /sys/fs/ext4/dm-8/mb_stream_req
Cannot dump log messages: /dev/kmsg: Bad file descriptor
Discard 3 unwritten log message(s).
Comment 2 Pacho Ramos gentoo-dev 2014-02-02 08:15:32 UTC
Please create a bug in upstream site:
https://sourceforge.net/p/e4rat/tickets/new/

And post the link here to let me track the issue there

Thanks!
Comment 3 Norman Back 2014-02-25 14:37:52 UTC
(In reply to Pacho Ramos from comment #2)
> Please create a bug in upstream site:
> https://sourceforge.net/p/e4rat/tickets/new/
> 
> And post the link here to let me track the issue there
> 
> Thanks!

I have attempted to reproduce the error but it has gone away, most likely due to a kernel upgrade.
Comment 4 Pacho Ramos gentoo-dev 2014-02-25 20:34:56 UTC
OK, will see if it was solved then :/