holms's questions

Installed virt-man like this

$ apt-get install virt-manager
$ modprobe kvm
$ modprobe vhost-net

Launching libvirt guest

$ virt-install --virt-type kvm \
--name centos-6.5 --ram 1024 \
--cdrom=CentOS-6.5-x86_64-minimal.iso 
--disk centos-6.5.qcow2,format=qcow2 \ 
--network network=default \
--graphics vnc,listen=0.0.0.0 \
--noautoconsole --os-type=linux \ 
--os-variant=rhel6 

And it throws an error:

ERROR    No domains available for virt type 'hvm', arch 'x86_64', domain type 'kvm'

Validate command shows that's everything should work.

$ virt-host-validate 
QEMU: Checking for hardware virtualization                                 : PASS
QEMU: Checking for device /dev/kvm                                         : PASS
QEMU: Checking for device /dev/vhost-net                                   : PASS
QEMU: Checking for device /dev/net/tun                                     : PASS
 LXC: Checking for Linux >= 2.6.26                                         : PASS

Standart solutions I've found are usually related to missing kernel modules like kvm_intel for example, but it's loaded, although with warning

$ dmesg | grep kvm
[   10.279733] kvm: VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL does not work properly. Using workaround

Update: Here's more info:

$ cat /proc/cpustat
processor   : 0
vendor_id   : GenuineIntel
cpu family  : 6
model       : 44
model name  : Intel(R) Xeon(R) CPU           E5620  @ 2.40GHz
stepping    : 2
microcode   : 0x10
cpu MHz     : 1596.000
cache size  : 12288 KB
physical id : 1
siblings    : 8
core id     : 0
cpu cores   : 4
apicid      : 32
initial apicid  : 32
fpu     : yes
fpu_exception   : yes
cpuid level : 11
wp      : yes
flags       : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 popcnt aes lahf_lm ida arat epb dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips    : 4788.24
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management:

My original purpose is to create centos image for openstack. Although I did directly with kvm, still wondering about error.

Was using this manual for my task.

After this command:

# virt-install --virt-type kvm --name centos-6.4 --ram 1024 \
--cdrom=/data/isos/CentOS-6.4-x86_64-netinstall.iso \
--disk /tmp/centos-6.4.qcow2,format=qcow2 \
--network network=default \
--graphics vnc,listen=0.0.0.0 --noautoconsole \
--os-type=linux --os-variant=rhel6

I got an error:

ERROR    Error in network device parameters: Virtual network 'default' does not exist: Network not found: no network with matching name 'default'

Needless to say that I'm using RDO. By default I don't have any pre-configured network devices for libvirt. Question is which networking devices are available? Or if there's none, how to create one? Maybe RDO has different approach on libvirt networking?

In my opinion this happens only because of rackspace build (Freebsd 9.1)

root@office:/root # uname -a
FreeBSD office 9.1-RELEASE-p4 FreeBSD 9.1-RELEASE-p4 #1: Fri Jun 21 04:11:23 UTC 2013     root@freebsd:/usr/obj/usr/src/sys/XENHVM  amd64

With freshly built machine, after updating ports, and compiling mysql-server from ports, I'm trying to launch mysqld and that what's happens:

root@office:/root # cd /usr/
root@office:/root # /usr/local/etc/rc.d/mysql-server start
Starting mysql.
root@office:/root # /usr/local/etc/rc.d/mysql-server status
mysql is not running.
root@office:/root # ps ax | grep mysql
 4886  0  S+      0:00.00 grep mysql
root@office:/root # tail /var/db/mysql/office.err
/usr/local/libexec/mysqld: Can't create/write to file '/tmp/ib1NS09t' (Errcode: 13)
130705 11:35:44  InnoDB: Error: unable to create temporary file; errno: 13
130705 11:35:44 [ERROR] Plugin 'InnoDB' init function returned error.
130705 11:35:44 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
130705 11:35:44 [ERROR] Unknown/unsupported storage engine: InnoDB
130705 11:35:44 [ERROR] Aborting

130705 11:35:44 [Note] /usr/local/libexec/mysqld: Shutdown complete

130705 11:35:44 mysqld_safe mysqld from pid file /var/db/mysql/office.pid ended

doing this at home, everything work fine. I think this caused by some partitioning scheme, that rackspace did.

here's some info about perms and partitions:

root@office:/root # df -h
Filesystem                   Size    Used   Avail Capacity  Mounted on
zroot                         15G    958M     15G     6%    /
devfs                        1.0k    1.0k      0B   100%    /dev
zroot/tmp                     15G    192k     15G     0%    /tmp
zroot/usr                     16G    1.3G     15G     8%    /usr
zroot/usr/ports               16G    1.5G     15G     9%    /usr/ports
zroot/usr/ports/distfiles     15G    145M     15G     1%    /usr/ports/distfiles
zroot/usr/ports/packages      15G    144k     15G     0%    /usr/ports/packages
zroot/usr/src                 15G    509M     15G     3%    /usr/src
zroot/var                     15G    1.1M     15G     0%    /var
zroot/var/crash               15G    148k     15G     0%    /var/crash
zroot/var/db                  15G    306M     15G     2%    /var/db
zroot/var/db/pkg              15G    2.2M     15G     0%    /var/db/pkg
zroot/var/empty               15G    144k     15G     0%    /var/empty
zroot/var/log                 15G    256k     15G     0%    /var/log
zroot/var/mail                15G    148k     15G     0%    /var/mail
zroot/var/run                 15G    244k     15G     0%    /var/run
zroot/var/tmp                 15G    152k     15G     0%    /var/tmp
root@office:/root # ls -lah /tmp
total 60
drwxr-xr-x   7 root  wheel     7B Jul  5 03:05 .
drwxr-xr-x  18 root  wheel    24B Jun 20 20:33 ..
drwxrwxrwt   2 root  wheel     2B Jul  4 12:39 .ICE-unix
drwxrwxrwt   2 root  wheel     2B Jul  4 12:39 .X11-unix
drwxrwxrwt   2 root  wheel     2B Jul  4 12:39 .XIM-unix
drwxrwxrwt   2 root  wheel     2B Jul  4 12:39 .font-unix
drwx------   2 root  wheel     3B Jul  4 13:07 tmux-0

Question is: how to find a problem and fix it?

Preferably without setting tmpdir parameter in my.cnf, I wanna fix this in proper way so I could feedback to rackspace that they made some mistake in their build.

I'm new to ldap. I need to specify username in plaintext with some parameter without any sasl.

So this command gonna give you some search results, but it always empty cause there's no authorization:

ldapsearch -h 1.1.1.1 -p 389 -D "OU=SysAcc,OU=Infra,dc=mydomain,dc=com" -b "OU=blg,dc=whatever,dc=whatever2,dc=com"

I've found that I can add -w mypasswd to specify password, where can I specify a username? I started with ldapsearch because I'm having hard time to configure LDAP in one of web application I'm trying to setup. Just wanna check if my parameters are correct with ldapsearch tool, but I can't find how to specify username.

EDIT:

as from answer above just wanna write a final command how it should be:

   ldapsearch -h 1.1.1.1 -p 389 -W -D "CN=sysMYUSER,OU=SysAcc,OU=Infra,dc=mydomain,dc=com" -b "OU=blg,dc=whatever,dc=whatever2,dc=com"

I tried to upgrade few packages and then it's failed on libc upgrade. And now it's impossible to upgrade anything at all. here's things I've done:

# apt-get dist-upgrade

Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these.
The following packages have unmet dependencies:
 libc6 : Depends: libc-bin (= 2.13-37) but 2.13-38 is installed
E: Unmet dependencies. Try using -f.

root@pagalbadaiktais:~# apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following extra packages will be installed:
  libc6
Suggested packages:
  glibc-doc
The following packages will be upgraded:
  libc6
1 upgraded, 0 newly installed, 0 to remove and 71 not upgraded.
Need to get 4339 kB of archives.
After this operation, 1024 B of additional disk space will be used.
Do you want to continue [Y/n]? Y
Get:1 http://ftp.lt.debian.org/debian/ testing/main libc6 amd64 2.13-38 [4339 kB]
Fetched 4339 kB in 0s (30.5 MB/s)
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
    LANGUAGE = (unset),
    LC_ALL = (unset),
    LC_CTYPE = "UTF-8",
    LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
Preconfiguring packages ...
dpkg: warning: files list file for package 'libc6:amd64' missing; assuming package has no files currently installed
dpkg: warning: files list file for package 'gcc-4.7-base:amd64' missing; assuming package has no files currently installed
dpkg: warning: files list file for package 'liblzma5:amd64' missing; assuming package has no files currently installed
dpkg: warning: files list file for package 'libgcc1:amd64' missing; assuming package has no files currently installed
(Reading database ... 26345 files and directories currently installed.)
Preparing to replace libc6:amd64 2.13-37 (using .../libc6_2.13-38_amd64.deb) ...

A copy of the C library was found in an unexpected directory:
  '/lib/x86_64-linux-gnu/libc-2.13.so'
It is not safe to upgrade the C library in this situation;
please remove that copy of the C library or get it out of
'/lib/x86_64-linux-gnu' and try again.

dpkg: error processing /var/cache/apt/archives/libc6_2.13-38_amd64.deb (--unpack):
 subprocess new pre-installation script returned error exit status 1
Errors were encountered while processing:
 /var/cache/apt/archives/libc6_2.13-38_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

I've googled for this problem so much.. people who tried to solve this problem, after restarting machine, ended up reinstalling whole disto - which is not an option for me, because this project is quite highly loaded to have a downtime.

Some additional info from irc help:

# dpkg -S /lib/x86_64-linux-gnu/libc-2.13.so
dpkg-query: warning: files list file for package 'libc6:amd64' missing; assuming package has no files currently installed
dpkg-query: warning: files list file for package 'gcc-4.7-base:amd64' missing; assuming package has no files currently installed
dpkg-query: warning: files list file for package 'liblzma5:amd64' missing; assuming package has no files currently installed
dpkg-query: warning: files list file for package 'libgcc1:amd64' missing; assuming package has no files currently installed
dpkg-query: no path found matching pattern /lib/x86_64-linux-gnu/libc-2.13.so
# ls -l /var/lib/dpkg/info/libc*
-rw-r--r-- 1 root root     87 Dec 30 17:36 /var/lib/dpkg/info/libc-bin.conffiles
-rw-r--r-- 1 root root   1790 Mar  8 22:06 /var/lib/dpkg/info/libc-bin.list
-rw-r--r-- 1 root root   2874 Dec 30 17:36 /var/lib/dpkg/info/libc-bin.md5sums
-rwxr-xr-x 1 root root    246 Dec 30 17:36 /var/lib/dpkg/info/libc-bin.postinst
-rw-r--r-- 1 root root     40 Nov 19 01:07 /var/lib/dpkg/info/libc6.conffiles
-rw-r--r-- 1 root root  13341 Feb  1 15:45 /var/lib/dpkg/info/libc6.list
-rw-r--r-- 1 root root  21675 Nov 19 01:07 /var/lib/dpkg/info/libc6.md5sums
-rwxr-xr-x 1 root root  10114 Nov 19 01:07 /var/lib/dpkg/info/libc6.postinst
-rwxr-xr-x 1 root root   1117 Nov 19 01:07 /var/lib/dpkg/info/libc6.postrm
-rwxr-xr-x 1 root root  17327 Nov 19 01:07 /var/lib/dpkg/info/libc6.preinst
-rwxr-xr-x 1 root root   2015 Nov 19 01:07 /var/lib/dpkg/info/libc6.prerm
-rw-r--r-- 1 root root    996 Nov 19 01:07 /var/lib/dpkg/info/libc6.shlibs
-rw-r--r-- 1 root root 106948 Nov 19 01:07 /var/lib/dpkg/info/libc6.symbols
-rw-r--r-- 1 root root  64982 Nov 19 01:07 /var/lib/dpkg/info/libc6.templates
-rw-r--r-- 1 root root    267 Feb  1 15:47 /var/lib/dpkg/info/libcap2:amd64.list
-rw-r--r-- 1 root root    281 Aug 11  2012 /var/lib/dpkg/info/libcap2:amd64.md5sums
-rwxr-xr-x 1 root root    135 Aug 11  2012 /var/lib/dpkg/info/libcap2:amd64.postinst
-rwxr-xr-x 1 root root    132 Aug 11  2012 /var/lib/dpkg/info/libcap2:amd64.postrm
-rw-r--r-- 1 root root     27 Aug 11  2012 /var/lib/dpkg/info/libcap2:amd64.shlibs
-rw-r--r-- 1 root root    338 Feb  1 15:47 /var/lib/dpkg/info/libck-connector0:amd64.list
-rw-r--r-- 1 root root    322 Jul 30  2012 /var/lib/dpkg/info/libck-connector0:amd64.md5sums
-rwxr-xr-x 1 root root    135 Jul 30  2012 /var/lib/dpkg/info/libck-connector0:amd64.postinst
-rwxr-xr-x 1 root root    132 Jul 30  2012 /var/lib/dpkg/info/libck-connector0:amd64.postrm
-rw-r--r-- 1 root root     35 Jul 30  2012 /var/lib/dpkg/info/libck-connector0:amd64.shlibs
-rw-r--r-- 1 root root    350 Jul 30  2012 /var/lib/dpkg/info/libck-connector0:amd64.symbols
-rw-r--r-- 1 root root    395 Feb  1 15:46 /var/lib/dpkg/info/libclass-isa-perl.list
-rw-r--r-- 1 root root    451 Nov 24  2011 /var/lib/dpkg/info/libclass-isa-perl.md5sums
-rw-r--r-- 1 root root    247 Feb  1 15:47 /var/lib/dpkg/info/libcomerr2:amd64.list
-rw-r--r-- 1 root root    221 Jul 31  2012 /var/lib/dpkg/info/libcomerr2:amd64.md5sums
-rwxr-xr-x 1 root root    253 Jul 31  2012 /var/lib/dpkg/info/libcomerr2:amd64.postinst
-rwxr-xr-x 1 root root    247 Jul 31  2012 /var/lib/dpkg/info/libcomerr2:amd64.postrm
-rw-r--r-- 1 root root     82 Jul 31  2012 /var/lib/dpkg/info/libcomerr2:amd64.shlibs
-rw-r--r-- 1 root root    574 Jul 31  2012 /var/lib/dpkg/info/libcomerr2:amd64.symbols
-rw-r--r-- 1 root root   1553 Feb  1 15:46 /var/lib/dpkg/info/libconsole.list
-rw-r--r-- 1 root root   1556 Feb 18  2011 /var/lib/dpkg/info/libconsole.md5sums
-rwxr-xr-x 1 root root    135 Feb 18  2011 /var/lib/dpkg/info/libconsole.postinst
-rwxr-xr-x 1 root root    132 Feb 18  2011 /var/lib/dpkg/info/libconsole.postrm
-rw-r--r-- 1 root root    124 Feb 18  2011 /var/lib/dpkg/info/libconsole.shlibs
-rw-r--r-- 1 root root   3889 Feb  1 15:48 /var/lib/dpkg/info/libcrack2.list
-rw-r--r-- 1 root root   3226 Dec 13 00:00 /var/lib/dpkg/info/libcrack2.md5sums
-rwxr-xr-x 1 root root    135 Dec 13 00:00 /var/lib/dpkg/info/libcrack2.postinst
-rwxr-xr-x 1 root root    132 Dec 13 00:00 /var/lib/dpkg/info/libcrack2.postrm
-rw-r--r-- 1 root root     21 Dec 13 00:00 /var/lib/dpkg/info/libcrack2.shlibs
-rw-r--r-- 1 root root    703 Dec 13 00:00 /var/lib/dpkg/info/libcrack2.symbols
-rw-r--r-- 1 root root    432 Feb  1 15:47 /var/lib/dpkg/info/libcroco3:amd64.list
-rw-r--r-- 1 root root    558 Nov 26 15:53 /var/lib/dpkg/info/libcroco3:amd64.md5sums
-rwxr-xr-x 1 root root    135 Nov 26 15:53 /var/lib/dpkg/info/libcroco3:amd64.postinst
-rwxr-xr-x 1 root root    132 Nov 26 15:53 /var/lib/dpkg/info/libcroco3:amd64.postrm
-rw-r--r-- 1 root root     25 Nov 26 15:53 /var/lib/dpkg/info/libcroco3:amd64.shlibs
-rw-r--r-- 1 root root  15081 Nov 26 15:53 /var/lib/dpkg/info/libcroco3:amd64.symbols
-rw-r--r-- 1 root root    366 Feb  1 15:47 /var/lib/dpkg/info/libcups2:amd64.list
-rw-r--r-- 1 root root    438 Jan 11 11:57 /var/lib/dpkg/info/libcups2:amd64.md5sums
-rwxr-xr-x 1 root root    135 Jan 11 11:55 /var/lib/dpkg/info/libcups2:amd64.postinst
-rwxr-xr-x 1 root root    132 Jan 11 11:55 /var/lib/dpkg/info/libcups2:amd64.postrm
-rw-r--r-- 1 root root     19 Jan 11 11:55 /var/lib/dpkg/info/libcups2:amd64.shlibs
-rw-r--r-- 1 root root  11545 Jan 11 11:55 /var/lib/dpkg/info/libcups2:amd64.symbols
-rw-r--r-- 1 root root    834 Feb  5 12:12 /var/lib/dpkg/info/libcurl3-gnutls:amd64.list
-rw-r--r-- 1 root root   1056 May 25  2012 /var/lib/dpkg/info/libcurl3-gnutls:amd64.md5sums
-rwxr-xr-x 1 root root    135 May 25  2012 /var/lib/dpkg/info/libcurl3-gnutls:amd64.postinst
-rwxr-xr-x 1 root root    132 May 25  2012 /var/lib/dpkg/info/libcurl3-gnutls:amd64.postrm
-rw-r--r-- 1 root root     33 May 25  2012 /var/lib/dpkg/info/libcurl3-gnutls:amd64.shlibs
-rw-r--r-- 1 root root   2390 May 25  2012 /var/lib/dpkg/info/libcurl3-gnutls:amd64.symbols
-rw-r--r-- 1 root root   4336 Feb  1 15:46 /var/lib/dpkg/info/libcwidget3.list
-rw-r--r-- 1 root root   3462 Jun 17  2012 /var/lib/dpkg/info/libcwidget3.md5sums
-rwxr-xr-x 1 root root    135 Jun 17  2012 /var/lib/dpkg/info/libcwidget3.postinst
-rwxr-xr-x 1 root root    132 Jun 17  2012 /var/lib/dpkg/info/libcwidget3.postrm
-rw-r--r-- 1 root root     25 Jun 17  2012 /var/lib/dpkg/info/libcwidget3.shlibs
#  apt-cache policy libc6
libc6:
  Installed: 2.13-37
  Candidate: 2.13-38
  Version table:
     2.13-38 0
        500 http://ftp.lt.debian.org/debian/ testing/main amd64 Packages
 *** 2.13-37 0
        100 /var/lib/dpkg/status

In conclusion from IRC help it's multiarch problem. Would be nice stick to 64bit packages.

I've just tried basic puppet manifest which actually takes around 23 seconds to apply.

root@ovh:/root # cat freebsd.pp
package { '*./editors/vim':
    ensure => installed,
}

after adding --debug switch, it clearly seen how puppet every time reinstalls vim package with pkg_add.

q1) how force puppet to use port collection maybe with some portmaster or any other port management utility?

q2) Is this package name would be also valid for linux distros? Or I should make two file entries with different provider?

it's FreeBSD 9.1-RELEASE amd64 in here. I installed puppet from ports and my manifest also probably uses ports packages. I'm happy with that. Now here's a simple manifest:

root@ovh:/root # cat freebsd.pp
package { '*./editors/vim':
    ensure => installed,
}

Applying manifest:

root@ovh:/root # puppet apply freebsd.pp
Notice: /Stage[main]//Package[*./editors/vim]/ensure: created
Notice: Finished catalog run in 22.54 seconds

23 seconds to execute simple package check which actually already installed??? Is this normal? I'm new to puppet, so if somebody can explain what's going on in background for such a simple check, I would really appreciate that. Maybe there's faster way to check if package installed?

I heard once that in Linux it's possible to put whole /etc/ directory into repository. In fact i already done too much crap on server and I quite disoriented what exactly is setup in there at all.

Question is how to put FreeBSD all configuration files under Revision Control?

Is there's any solution for that like packages which helps to automatize this? (The only i know is etckeeper which is for Linux)

First time in my life I have something like this:

root@peklan:~# aptitude install git-core
No packages will be installed, upgraded, or removed.
0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B of archives. After unpacking 0 B will be used.
FATAL -> Failed to fork.   

can somebody explain how to get rid of this message?

I'm not sure what to make of this on my Debian server

aptitude install apache2
ls /etc/apache2

You would expect to see configs, right?

aptitude remove apache2

It should remove everything, right?

ls /etc/apache2

But the configs are here.

rm -rf /etc/apache2
aptitude install apache2
ls /etc/apache2

No directory found. Any guidance?

This can sound a little bit paranoid but I really have a doubt that my configured libvirt+kvm uses any hardware acceleration in debian. I setuped it with this guide. in fact i've checked already, kvm-intel module is loaded for sure. But inside vm with freebsd for example, I have such a huge lag while, for example: installing OS, extracting port tree with csup, and of course compiling ports also. Resources are pretty big on that machine: 4 cores of cpu and 4gb of ram. I can confirm that I had same setup with proxmox on debian, before setuping libvirt manually on the same machine. So I do know how fast guest must be. So it's really out of question about hardware issue, I mean OVH hosting states that: Intel Core i5-2400 4x3.1+ GHz 6 Mb L2 - QPI 5 GT/sec is ued and virtualisation is: VT Instructions

So as I said this setup worked before. The only thing that, maybe, I missed kernel module configuration, but kvm-intel is loaded, and my friend checked that libvirt uses it too. so please tell me what I did wrong , maybe guide giving wrong steps..? maybe freebsd guest doesn't support something? if you need some additional information please write in comments. Maybe it's worth to mention that I've updated kernel, since new installation of debian was done (on host). Maybe loaded module can't find something related to kernel.. anyway I'm really puzzled what to do next.

this configuration was used to create vm:

# virt-install --connect qemu:///system -n bsd -r 4096 --vcpus=2 --disk path=/home/vm/hdd/bsd.img,size=100 -c /home/vm/iso/FreeBSD-8.2-RELEASE-amd64-disc1.iso --vnc --noautoconsole --os-type unix --os-variant freebsd7 --accelerate --network=bridge:br0,mac=02:00:00:a7:66:32 --hvm

Update: ps -ef | grep qemu

106       2370     1  5 09:40 ?        00:24:10 /usr/bin/kvm -S -M pc-0.12 -enable-kvm -m 4095 -smp 2,sockets=2,cores=1,threads=1 -name roman -uuid 405855d7-7fbe-7ecb-d125-b23fd9c9d07a -nodefaults -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/roman.monitor,server,nowait -mon chardev=monitor,mode=readline -rtc base=utc -boot c -drive file=/home/vm/hdd/roman.img,if=none,id=drive-ide0-0-0,boot=on,format=raw -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -device ne2k_pci,vlan=0,id=net0,mac=02:00:00:a7:66:31,bus=pci.0,addr=0x3 -net tap,fd=32,vlan=0,name=hostnet0 -chardev pty,id=serial0 -device isa-serial,chardev=serial0 -usb -vnc 127.0.0.1:0 -k en-us -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4

Trying to boot freebsd iso on KVM/libvirt [debian host]

Timer shows: 10 sometimes is 9 or even 7. and that's it, count down stops.. Found some information that it's a bug with newest qemu and my kernel version.

iso used is: amd64. machine has 2cpu physical cpu's with 4 cores.

uname -a Linux ns387352.ovh.net 2.6.38.2-xxxx-std-ipv6-64 #2 SMP Thu Aug 25 16:43:23 UTC 2011 x86_64 GNU/Linux

kernel upgrade would be real pain on this damned hosting..

I just wanna know what is the most recommended method to use for managing your vm's. Let's say you have big dedicated server something like 8 cores cpu and 24gb ram. What method you'd choose for managing server? I know some for example: xentools, xen-shell, argo and the whole distro like citrix XenServer.. if any of this method only suitable for exact needs I would like to know those "needs"... I mean, I'm just learning, and soon I'll have a production server setup, and I'm a little bit afraid to do this only with xen-tools or even manually.

I've got 3 SATA hdds in my computer which is in fact - stripe software RAID volume. I want to transfer data from there. I know that Linux can read HFS+ file system. Is there's any chance to MOUNT whole RAID volume by it's ID somehow?

For example I want to check does py-sqlite3 available..? One of the methods would to call that command with some minimum python script and catch error?

I want to make check for any linux distro and unix system (at least bsd)

What could be the best way to achieve this?

P.s. Please provide example of shell scripting error catching, because I'm not so advanced in shell scripting

Trying to get compile psybnc on NAS. ipkg is default package manager in here. I've installed ncurses already, it's in /opt/lib (libncurses.so)

[\w] # ls /opt/lib | grep ncurses
libncurses.so
libncurses.so.5
libncurses.so.5.7
libncursesw.so
libncursesw.so.5
libncursesw.so.5.7

[\w] # file libncurses.so.5.7
libncurses.so.5.7: ELF 32-bit LSB shared object, ARM, version 1 (SYSV), dynamically linked, stripped

I added this path to /etc/profile

[\w] # echo $PATH     
/bin:/sbin:/usr/bin:/usr/sbin:/opt/bin:/opt/sbin:/opt/lib

So trying to make menuconfig gives me this error

[\w] # make menuconfig
Initializing Menu-Configuration
[*] Running Conversion Tool for older psyBNC Data.
Using existent configuration File.
[*] Running Autoconfig.
System: Linux
Socket Libs: Internal.
Environment: Internal.
Time-Headers: in time.h and sys/time.h
Byte order: Big Endian.
IPv6-Support: Yes, general support. But no interface configured.
async-DNS-Support: Yes.
SSL-Support: No openssl found. Get openssl at www.openssl.org
Creating Makefile
[*] Creating Menu, please wait.
This needs the ncurses library. If it is not available, menuconf wont work. If you are using curses, use make menuconfig-curses instead.
make: *** [menuconfig] Error 1

Same goes for make menuconfig-curses

[\w] # make menuconfig-curses 
Initializing Menu-Configuration using Curses
[*] Running Conversion Tool for older psyBNC Data.
Using existent configuration File.
[*] Running Autoconfig.
System: Linux
Socket Libs: Internal.
Environment: Internal.
Time-Headers: in time.h and sys/time.h
Byte order: Big Endian.
IPv6-Support: Yes, general support. But no interface configured.
async-DNS-Support: Yes.
SSL-Support: No openssl found. Get openssl at www.openssl.org
Creating Makefile
[*] Creating Menu, please wait.
This needs the curses library. If it is not available, menuconf wont work.
make: *** [menuconfig-curses] Error 1

Psybnc compiled ok, just wanna work with menuconfig instead of configuration file.

Replace ACDC to AC-DC

For example we have these files

ACDC - Rock N' Roll Ain't Noise Pollution.xxx

ACDC - Rocker.xxx

ACDC - Shoot To Thrill.xxx

I want them to become:

AC-DC - Rock N' Roll Ain't Noise Pollution.xxx

AC-DC - Rocker.xxx

AC-DC - Shoot To Thrill.xxx

I know that sed or awk is used for this operation. I can't google anything so I'm asking for your help =) Could you please provide full working shell command for this task?

Feedback: Solution for OSX users

The default shell in FreeBSD is sh and I really can't stand it: autocomplete is very limited, and rehash commands kill me. I feel like a one armed and one legged man...

How can I change the shell globally to zsh or bash - for root and for all current and future users?

I tried to install with "grub-install" grub for guest os (which is debian) from host (centos). Tried with chroot, tried with deboostrap, tried with netinstaller. Centos is running on two raid hdd's,under LVM. Lvm volumes are created everything is formated and works. Only bootloader problem left.

Netinstaller just throws me a window with error that grub can't be installed, debootstrap instructions is not clear for me in here, grub-install doesn't work in chroot, and out of chroot (grub-install /dev/mylvm/partition)

Please can somebody write how to install grub for domU (guest) os from centos?

Edit: For feedback: in domU configuration I set bootloader for pygrub. Then it started ok. Still haven't figured out how to make a successful installation from debian install image.

I'm a little bit confused in here..

I want to have 2 node cluster with shared storage. I read all wiki page about HA cluster. Now in my head there's a scheme like:

So we have two 4U tower servers from superMicro. There's SAS in there... is it possible somehow to connect few servers (not through network) to one SAS storage?? Or we need to sell these two servers and get normal NAS/SAN storage and 2 simple rack servers? Edit: Or just to use these two servers as NAS? and to buy 2 another servers?

any answers are welcome, I'm a little bit a beginner in server hardware so any theory are welcome in here.

Thank you