debian

If you would like to use SNMP to monitor your dell server with OMSA (server administrator) installed, you have to configure your local SNMPd.

First you have to enable SNMP on OMSA:

/etc/init.d/dataeng enablesnmp

Than restart your Data Engine System from OMSA:

/etc/init.d/dataeng restart

You can now install the snmp daemon from debian:

apt-get install snmpd

SNMPd should listen to all interfaces. You can configure this at /etc/default/snmpd

Please note, that you have to remove the entry -I -smux, because OMSA uses snmp smux for communicating with the SNMP daemon.

The following snmpd.conf is tested to work with OMSA:

com2sec local localhost public
com2sec watchdog 192.168.168.0/24 public
smuxsocket 127.0.0.1
smuxpeer .1.3.6.1.4.1.674.10892.1
group MyRoGroup v2c local
group MyRoGroup v2c watchdog
view all included .1
access MyRoGroup "" any noauth exact all none none

Now restart the snmpd and install also the dell mibs. You can find the mibs in /opt/dell/.

After the restart you can walk throw your SNMP tables:

snmpwalk -v2c -c public localhost 1.3.6.1.4.1.674.10893

If you want to monitor the health of your server I can suggest you the following nagios plugin:

check_omsa_snmp.pl - this plugin checks temperature,voltage, Power Supply and Cooling Devices

If you are running clamav daemon on debian etch, and your clamav daemon takes up to 3-4 minutes to create the unix socket and the pid file, don't despair it's an clamav bug.

While you are running clamav with amavis this bug can be very annoying:

amavis[22480]: (21470-02) (!!) ClamAV-clamd av-scanner FAILED: Too many retries to talk to /var/run/clamav/clamd.ctl (Can't connect to UNIX socket

If you strace your clamv on the startup time you get many of these messages:

read(10, "n.Downloader-14249\n29184:5d2a569"..., 4096) = 4096
read(10, "15872:15a82a8cbbb437f9249c944391"..., 4096) = 4096
read(10, "a6288c61679d87f00:Trojan.Bancos-"..., 4096) = 4096
read(10, "db2a:Trojan.IRCBot-1189\n24576:5e"..., 4096) = 4096

The clamav version is debian etch is 0.90.1.
The bug is fixed in version 0.91rc2. So you could use the backports.org packages (0.91.2).

I have updated my 3Ware 3dm2 and 3Ware CLI debian packages. I also included the patch from tretkowski.de.

Now version 9.5.0 is available on jonas.genannt.name.

If you want to start an DomU with xm create foo.bar.domain and you get the following output:

error: (22, 'Invalid argument')

I have found the following two possible problems:

• DomU kernel has got no Xen support


• DomU kernel uses PAE; hypervisor and Dom0 kernel does not support PAE

I have updated my 3Ware 3dm2 and 3Ware CLI debian packages.

Now version 9.4.1.2 is available on jonas.genannt.name.

If you update from sarge to etch with an running 3dm2, please make sure if you use the default etch kernel (version 2.6.18) that you have installed the newest version of 3dm2.

If you use an old 3dm2 version with the etch kernel you get the following messages in dmesg:

3w-xxxx: SCSI_IOCTL_SEND_COMMAND deprecated, please update your 3ware tools.
3w-xxxx: SCSI_IOCTL_SEND_COMMAND deprecated, please update your 3ware tools.

You can get the newest version of 3dm2 here.

New ( version: 9.4.1.1) 3Ware CLI programm is now packaged. You can find it on: jonas.genannt.name.

Please have a look at: Using the tw_cli

If you get this "4gb seg fixup" message on tty and/or in your /var/log/messages after the reboot to the Xen Hypervisor on Etch, you should check if you installed libc6-xen on your system.

If not, install it, and reboot the system again.

The tw_cli from 3Ware for all the 3WARE Controllers is a little bit tricky.

Here are some examples how to use tw_cli:

tw_cli
//irena>info
Ctl Model Ports Drives Units NotOpt RRate VRate BBU
------------------------------------------------------------------------
c0 8506-4LP 4 3 1 0 3 - -

The info command is usefull for checking how many controller are available.

//irena>/c0 show
Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy
------------------------------------------------------------------------------
u0 RAID-5 OK - - 64K 298.099 ON -

Port Status Unit Size Blocks Serial
---------------------------------------------------------------
p0 OK u0 149.05 GB 312581808 0696J1FX608399
p1 OK u0 149.05 GB 312581808 0696J1FX611330
p2 NOT-PRESENT - - - -
p3 OK u0 149.05 GB 312581808 0696J1FX611304

The /c0 show command display which raid units and disks avilable on controller 0.
For the second controller in the system please type /c1 show.

//irena>/c0/u0 start verify
Sending start verify message to /c0/u0 ... Done.

The /c0/u0 start verify command starts an Raid verify on Controller 0 Unit 0.

//irena>/c0/u0 start rebuild disk=1
Sending rebuild start request to /c0/u0 on 1 disk(s)

The command /c0/u0 start rebuild disk=1 starts the rebuild on controller 0, unit 0 and disk 1 (on port 1).


If you are using debian, you can use my debian packages, please see here!

I have updated my 3Ware CLI (Command Line Interface) and 3DM2 (Disk Management Utility) debian packages.

You can find it on my website like the last version.

Please note, I have only updated the i386 packages, the amd64 will follow in some days.

Using /etc/defaults/snmpd in debian:

grep "SNMPDOPTS" /etc/default/snmpd | cut -f 2 -d '-'
Lsd

Say no to the drugs

Devolo dLAN USB drivers for the devolo network over power module.

If you try to compile the version 2.0 on an higher kernel than 2.6.13 you get the following error:

make[2]: Entering directory `/usr/src/linux-2.6.16.18'
CC [M] /home/jonas/dLAN-linux-package-2.0/driver/devolo_usb.o
/home/jonas/dLAN-linux-package-2.0/driver/devolo_usb.c: In function `devolo_tx_timeout':
/home/jonas/dLAN-linux-package-2.0/driver/devolo_usb.c:205: error: `URB_ASYNC_UNLINK' undeclared (first use in this function)
/home/jonas/dLAN-linux-package-2.0/driver/devolo_usb.c:205: error: (Each undeclared identifier is reported only once
/home/jonas/dLAN-linux-package-2.0/driver/devolo_usb.c:205: error: for each function it appears in.)
make[3]: [/home/jonas/dLAN-linux-package-2.0/driver/devolo_usb.o] Error 1
make[2]: [module /home/jonas/dLAN-linux-package-2.0/driver] Error 2

The URB_ASYNC_UNLINK symbol is removed from the kernel.

This afternoon Alan Stern submitted a patch to remove the URB_ASYNC_UNLINK
flag from the Linux kernel. Mr. Stern explained, "This flag is a relic
from an earlier, less-well-designed system. For over a year it hasn't
been used for anything other than printing warning messages."

For the complete text klick here!

So remove the lines 204 till 208 in the file driver/devolo_usb.c.

Restart the make, and the driver will now compile fine and work.

3Ware Software the second round!

I have created debian packages for the CLI (Command Line Interface) for 3Ware Controllers.

You can find it, like the 3dm2 on Debian Unofficial and here.

I have created debian packages for the 3DM 2 (Disk Management Utility) for 3Ware Controllers.

You can find it on Debian Unofficial and here.

Relating to that Virus Scanning entry I think Debian Volatile is better for an up-to-date ClamAV than Backports.org.

Debian Volatile is made for packages that change very often, and you need the current upstream package on a server. Like an up-to-date virus scanning engine.

So simple and this line to your sources.list and run after that an apt-get update.

deb http://ftp2.de.debian.org/debian-volatile sarge/volatile main

BTW: Volatile Mirror List

Now you can install your clamav normally with an apt-get install clamav.