checking whether to enable multibyte string support… no
checking whether to enable multibyte regex support… yes
checking whether to check multibyte regex backtrack… yes
checking for external libmbfl… no
checking for mcrypt support… yes
configure: error: mcrypt.h not found. Please reinstall libmcrypt.

Checking if the package exists in the default repos shows it doesn’t,

# yum search libmcrypt
Loaded plugins: fastestmirror, security
Loading mirror speeds from cached hostfile
* base: mirrors.versaweb.com
* extras: mirrors.usc.edu
* updates: mirrors.easynews.com
Warning: No matches found for: libmcrypt
No Matches found

You need to obtain this from the epel repos now at http://dl.fedoraproject.org/pub/epel/6/x86_64/ , at the time of writing the version is 2.5.8-9 so you can install this with,

mcryptver=2.5.8-9
arch=x86_64
rpm -Uhv http://dl.fedoraproject.org/pub/epel/6/x86_64/libmcrypt-$mcryptver.el6.$arch.rpm
rpm -Uhv http://dl.fedoraproject.org/pub/epel/6/x86_64/libmcrypt-devel-$mcryptver.el6.$arch.rpm

An example,

# mcryptver=2.5.8-9
# arch=x86_64
# rpm -Uhv http://dl.fedoraproject.org/pub/epel/6/x86_64/libmcrypt-$mcryptver.el6.$arch.rpm
Retrieving http://dl.fedoraproject.org/pub/epel/6/x86_64/libmcrypt-2.5.8-9.el6.x86_64.rpm
warning: /var/tmp/rpm-tmp.BoLykl: Header V3 RSA/SHA256 Signature, key ID 0608b895: NOKEY
Preparing… ########################################### [100%]
1:libmcrypt ########################################### [100%]
# rpm -Uhv http://dl.fedoraproject.org/pub/epel/6/x86_64/libmcrypt-devel-$mcryptver.el6.$arch.rpm
Retrieving http://dl.fedoraproject.org/pub/epel/6/x86_64/libmcrypt-devel-2.5.8-9.el6.x86_64.rpm
warning: /var/tmp/rpm-tmp.6SW2Vh: Header V3 RSA/SHA256 Signature, key ID 0608b895: NOKEY
Preparing… ########################################### [100%]
1:libmcrypt-devel ########################################### [100%]

First you should right click on the current panel and click “New panel” then all you have to do is move the panel to the other monitor of which there are a few ways, the easiest two are

– Hold ALT and drag the panel to the new window.
or
– Right click the panel and go to properties
– Uncheck “Expand”
– Now drag the smaller panel to the monitor you want it on
– Right click and re-check expand and also select where you want it (top/bottom/left/right)

Then simply add what items you want on the panel. In my case I added the Window List item.

# rpm -qf /sbin/resize2fs
e2fsprogs-1.39-23.el5_5.1
# rpm -qf /sbin/resize4fs
e4fsprogs-1.41.9-3.el5

As I found out today when resizing an LVM partition on one of our mongodb snapshot systems.

# lvextend -L+50G /dev/mapper/mongo
Extending logical volume mongo to 150.00 GB
Logical volume mongo successfully resized
# resize2fs /dev/mapper/mongo
resize2fs 1.39 (29-May-2006)
resize2fs: Filesystem has unsupported feature(s) while trying to open /dev/mapper/mongo
Couldn’t find valid filesystem superblock.

Having alook around I noticed the resize4fs binary which resized it successfully.

# resize4fs /dev/mapper/mongo
resize4fs 1.41.9 (22-Aug-2009)
Filesystem at /dev/mapper/mongo is mounted on /var/lib/mongodb; on-line resizing required
old desc_blocks = 7, new_desc_blocks = 10
Performing an on-line resize of /dev/mapper/mongo to 39321600 (4k) blocks.

After doing the rewrite for nginx,

location ^~ /common/ {
fastcgi_split_path_info ^(/common)(/?.+)$;
fastcgi_param SCRIPT_FILENAME /vhosts/shared/common$fastcgi_script_name;
fastcgi_param PATH_INFO $fastcgi_path_info;
fastcgi_pass 127.0.0.1:9000;
include fastcgi_params;
}

nginx was simply returning access denied.

# curl http://localhost/common/file
Access denied.

Which is because the new file has no extension and PHP-FPM now defaults to only allow .php. This can be altered by editing security.limit_extensions in the php-fpm.conf (in this case /etc/php-fpm.d/daemon.conf) to allow the extensions you need. In this case we needed it to support files without extensions so setting security.limit_extensions to FALSE done the job,

security.limit_extensions = FALSE

Error: unsupported locale setting

So it looks like it doesn’t have the locale installed (In my case EN_GB) this is easily fixed by running,

sudo dpkg-reconfigure locales

Then selecting the necessary locale, you’ll most likely want to default to UTF8.

You should then be able to run trac and have it accessible, in my case

sudo -u trac tracd -s -p 8000 –pidfile ~trac/dev/tracd.pid -d –basic-auth=”*,/home/trac/dev/htpasswd,dev” ~trac/dev
curl -I localhost:8000
HTTP/1.0 200 OK
Server: tracd/0.11.7 Python/2.6.6
Date: Wed, 16 Jan 2013 07:38:32 GMT
Cache-Control: must-revalidate
Content-Type: text/html;charset=utf-8
Content-Length: 6184
Set-Cookie: trac_form_token=a83b66948209b4197936bd1a; Path=/
Set-Cookie: trac_session=d2dad341a8e80e6fd2f76551; expires=Tue, 16-Apr-2013 07:38:32 GMT; Path=/

[initandlisten] pthread_create failed: errno:11 Resource temporarily unavailable
[initandlisten] can’t create new thread, closing connection

There is a bug fix in the init.d available per https://jira.mongodb.org/browse/SERVER-6443 to increase the ulimit -u however while working through increasing the available max processes on RHEL I was noting the soft limit would not increase past 1024 when checking /proc/pid/limits even when being increased in the startup script.

Limit Soft Limit Hard Limit Units
Max cpu time unlimited unlimited seconds
Max file size unlimited unlimited bytes
Max data size unlimited unlimited bytes
Max stack size 10485760 unlimited bytes
Max core file size 0 unlimited bytes
Max resident set unlimited unlimited bytes
Max processes 1024 256662 processes
Max open files 8192 8192 files
Max locked memory 65536 65536 bytes
Max address space unlimited unlimited bytes
Max file locks unlimited unlimited locks
Max pending signals 256662 256662 signals
Max msgqueue size 819200 819200 bytes
Max nice priority 0 0
Max realtime priority 0 0
Max realtime timeout unlimited unlimited us

It turns out the pam package provides a file /etc/security/limits.d/90-nproc.conf which explicitly overrides the settings in security.conf for the number of processes,

# Default limit for number of user’s processes to prevent
# accidental fork bombs.
# See rhbz #432903 for reasoning.

* soft nproc 1024

Changing this allowed the number of processes to be increased.

First you need ffmpeg and libmp3lame which on Ubuntu and Linux Mint can be done with

sudo apt-get install libavcodec-extra-53 ffmpeg

Then use ffmpeg to do the conversion replacing INPUT.aiff and OUTPUT.mp3

ffmpeg -i INPUT.aiff -f mp3 -acodec libmp3lame -ab 192000 -ar 44100 OUTPUT.mp3

Sample,

scott@scott:~/Music$ ffmpeg -i INPUT.mp3 -f mp3 -acodec libmp3lame -ab 192000 -ar 44100 OUTPUT.mp3
ffmpeg version 0.7.3-4:0.7.3-0ubuntu0.11.10.1, Copyright (c) 2000-2011 the Libav developers
built on Jan 4 2012 16:08:51 with gcc 4.6.1
configuration: –extra-version=’4:0.7.3-0ubuntu0.11.10.1′ –arch=amd64 –prefix=/usr –enable-vdpau –enable-bzlib –enable-libgsm –enable-libschroedinger –enable-libspeex –enable-libtheora –enable-libvorbis –enable-pthreads –enable-zlib –enable-libvpx –enable-runtime-cpudetect –enable-vaapi –enable-gpl –enable-postproc –enable-swscale –enable-x11grab –enable-libdc1394 –enable-shared –disable-static
WARNING: library configuration mismatch
avutil configuration: –extra-version=’4:0.7.3ubuntu0.11.10.1+medibuntu1′ –arch=amd64 –prefix=/usr –enable-vdpau –enable-bzlib –enable-libgsm –enable-libschroedinger –enable-libspeex –enable-libtheora –enable-libvorbis –enable-pthreads –enable-zlib –enable-libvpx –enable-runtime-cpudetect –enable-libopencore-amrnb –enable-libopencore-amrwb –enable-version3 –enable-vaapi –enable-libopenjpeg –enable-libfaac –enable-nonfree –enable-gpl –enable-postproc –enable-swscale –enable-x11grab –enable-libdirac –enable-libmp3lame –enable-librtmp –enable-libx264 –enable-libxvid –enable-libopencore-amrnb –enable-version3 –enable-libopencore-amrwb –enable-version3 –enable-libvo-aacenc –enable-version3 –enable-libvo-amrwbenc –enable-version3 –enable-libdc1394 –enable-shared –disable-static
avcodec configuration: –extra-version=’4:0.7.3ubuntu0.11.10.1+medibuntu1′ –arch=amd64 –prefix=/usr –enable-vdpau –enable-bzlib –enable-libgsm –enable-libschroedinger –enable-libspeex –enable-libtheora –enable-libvorbis –enable-pthreads –enable-zlib –enable-libvpx –enable-runtime-cpudetect –enable-libopencore-amrnb –enable-libopencore-amrwb –enable-version3 –enable-vaapi –enable-libopenjpeg –enable-libfaac –enable-nonfree –enable-gpl –enable-postproc –enable-swscale –enable-x11grab –enable-libdirac –enable-libmp3lame –enable-librtmp –enable-libx264 –enable-libxvid –enable-libopencore-amrnb –enable-version3 –enable-libopencore-amrwb –enable-version3 –enable-libvo-aacenc –enable-version3 –enable-libvo-amrwbenc –enable-version3 –enable-libdc1394 –enable-shared –disable-static
libavutil 51. 7. 0 / 51. 7. 0
libavcodec 53. 6. 0 / 53. 6. 0
libavformat 53. 3. 0 / 53. 3. 0
libavdevice 53. 0. 0 / 53. 0. 0
libavfilter 2. 4. 0 / 2. 4. 0
libswscale 2. 0. 0 / 2. 0. 0
libpostproc 52. 0. 0 / 52. 0. 0
[aiff @ 0x100d560] max_analyze_duration reached
Input #0, aiff, from ‘INPUT.aiff’:
Duration: 00:53:17.08, start: 0.000000, bitrate: 1411 kb/s
Stream #0.0: Audio: pcm_s16be, 44100 Hz, 2 channels, s16, 1411 kb/s
Output #0, mp3, to ‘OUTPUT.mp3’:
Metadata:
TSSE : Lavf53.3.0
Stream #0.0: Audio: libmp3lame, 44100 Hz, 2 channels, s16, 192 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Press ctrl-c to stop encoding
size= 74933kB time=3197.13 bitrate= 192.0kbits/s
video:0kB audio:74933kB global headers:0kB muxing overhead 0.000042%

Removing munin-node …
[FAIL] Munin-Node appears to be unconfigured. … failed!
invoke-rc.d: initscript munin-node, action “stop” failed.
dpkg: error processing munin-node (–purge):
subprocess installed pre-removal script returned error exit status 6
[FAIL] Munin-Node appears to be unconfigured. … failed!
invoke-rc.d: initscript munin-node, action “start” failed.
dpkg: error while cleaning up:
subprocess installed post-installation script returned error exit status 6
Errors were encountered while processing:
munin-node
E: Sub-process /usr/bin/dpkg returned an error code (1)

The init.d checks if it’s configured

/etc/init.d/munin-node

elif [ ! -e $CONFFILE ]; then
log_failure_msg “Munin-Node appears to be unconfigured.”
exit 6
fi

Which is what is causing this issue, changing this too,

elif [ ! -e $CONFFILE && $1 != “stop” ]; then
log_failure_msg “Munin-Node appears to be unconfigured.”
exit 6
fi

Should solve the issue.

“Unity Sucks” the top recommendation next to the term itself.

In the previous release I was happy because the gnome classic to get gnome 2 worked but as of 11.10 this isn’t possible. It’s either Unity or GNOME 3 (Classic is available). Unity lasted no more than 10 minutes in testing, it’s clearly designed for tablets and is horrendous to use. GNOME 3 I could get used to but would need to tweak more, I really dislike the overly large icons and large notifications.

After a bit of trial and messing around I even managed to make all my panels disappear and couldn’t figure out how to return them and decided to just take the plunge and switch to mint 12 with cinnamon. The migration was rather easy, I simply installed mint and restored my backup of /home to retain all my old settings. Reinstalled skype, thunderbird, chrome, firefox, nagstamon and xchat and that was everything back with the exception of being on Mint 12.

The standard mint brings the gnome 2 feel but I still couldn’t quite take to it so went ahead and installed cinnamon and I have to say I quite like it. With the exception of not having a taskbar on the other screens but there does seem to be a bug issue last updated a few days ago for this at https://github.com/linuxmint/Cinnamon/issues/130 so with any luck this will be introduced soon.

Overall everything seems quite snappy, the UI is what I want and it’s back to business as usual.

ERROR: Module backupdriver is in use

r1soft-uninstall-buagent -R
This uninstaller will remove the following..

File /etc/init.d/buagent
File /usr/bin/buagent
File /var/lock/buagent.lock
File /var/run/buagent.pid
File /usr/bin/r1key
File /usr/bin/r1soft-cki
File /usr/bin/r1soft-report.sh
File /usr/bin/r1soft-uninstall-buagent
File /usr/share/man/man3/buagent.3.gz
File /usr/share/man/man3/r1key.3.gz
File /usr/share/man/man3/r1soft-uninstall-buagent.3.gz
Directory /etc/buagent
Directory /usr/lib/buagent
Directory /lib/modules/buagent
Directory /var/cache/buagent
Directory /var/db/buagent
User buagent
Group buagent

Would you like to continue? (yes/no):yes
stopping buagent.
removing buagent from services.
removing File /etc/init.d/buagent
removing File /usr/bin/buagent
removing File /var/lock/buagent.lock
removing File /var/run/buagent.pid
removing File /usr/bin/r1key
removing File /usr/bin/r1soft-cki
removing File /usr/bin/r1soft-report.sh
removing File /usr/bin/r1soft-uninstall-buagent
removing File /usr/share/man/man3/buagent.3.gz
removing File /usr/share/man/man3/r1key.3.gz
removing File /usr/share/man/man3/r1soft-uninstall-buagent.3.gz
removing Directory /etc/buagent
removing Directory /usr/lib/buagent
removing Directory /lib/modules/buagent
removing Directory /var/cache/buagent
removing Directory /var/db/buagent
removing buagent user…
unloading backupdriver kernel module…
ERROR: Module backupdriver is in use
done.

Trying to simply rmmod the driver fails because it’s in use but without having forced support there is no way to unload it using this method.


# rmmod backupdriver
ERROR: Module backupdriver is in use


The solution is to reinstall the latest CDP 2 agent and run buagent -u to unload it first then proceed to uninstalling the CDP2 agent and installing CDP3 agent.