During the installation of Oracle 11gR2 on Red Hat Enterprise Linux 5 I stumbled upon a incorrect default setting for ASM disk discovery when using ASM lib. The discovery path is set to ‘/dev/raw/sd*’, which is incorrect because ASM lib creates the devices under ‘/dev/oracleasm/disks’.
Another thing to be aware of is the ownership of the disks. You need to run ‘/etc/init.d/oracleasm configure’ in order to configure the owner. If you just hit return the ownership of the disks is set to root. Because you will start the Oracle installation as user oracle the disks will not appear in the discovery step during the installation.
Incorrect ownership:
# ls -l /dev/oracleasm/disks/*
brw------- 1 root root 8, 65 Jan 20 15:27 /dev/oracleasm/disks/VOL1
brw------- 1 root root 8, 49 Jan 20 15:27 /dev/oracleasm/disks/VOL2
brw------- 1 root root 8, 33 Jan 20 15:27 /dev/oracleasm/disks/VOL3
Configure Oracle ASM Library:
# /etc/init.d/oracleasm configure
Configuring the Oracle ASM library driver.
This will configure the on-boot properties of the Oracle ASM library
driver. The following questions will determine whether the driver is
loaded on boot and what permissions it will have. The current values
will be shown in brackets ('[]'). Hitting <ENTER> without typing an
answer will keep that current value. Ctrl-C will abort.
Default user to own the driver interface []: oracle
Default group to own the driver interface []: oinstall
Start Oracle ASM library driver on boot (y/n) [y]:
Scan for Oracle ASM disks on boot (y/n) [y]:
Writing Oracle ASM library driver configuration: done
Initializing the Oracle ASMLib driver: [ OK ]
Scanning the system for Oracle ASMLib disks: [ OK ]
Correct ownership:
# ls -l /dev/oracleasm/disks/
total 0
brw-rw---- 1 oracle oinstall 8, 33 Jan 20 15:27 VOL1
brw-rw---- 1 oracle oinstall 8, 49 Jan 20 15:27 VOL2
brw-rw---- 1 oracle oinstall 8, 65 Jan 20 15:27 VOL3
[root@porad001 ~]#
Hope it saves you some time!
I would like to share my experience with webOS in combination with Zimbra Collaboration Suite. For the past two years I’m using Zimbra Open Source edition and I am pretty satisfied with it. It handles my email, contacts, calendar and tasks very well. Call me paranoid, but I don’t like Google or Yahoo! to watch over my personal data. All was working well till I received my first webOS device, an HP TouchPad, which I wanted to connect to my Zimbra server to manage email, appointments, contacts and tasks. Doing some searches I discovered it is possible to use Exchange (ActiveSync) with Zimbra Mobile, but I had the wrong edition of Zimbra. It appeared Zimbra Mobile is available for all Zimbra editions except for the Open Source edition I was using, that’s how they earn their money. I chose to go for the Zimbra Appliance Basic Free Edition. This free edition allows you to create up to 10 mailboxes, which is enough for myself and some family members.
I am using VirtualBox virtualization software, which works with the VMDK from the ZCA zip file. The configuration and migration from one Zimbra edition to the other went relatively smooth. The first thing to test was to setup my HP TouchPad and HP Pre3 smartphone (both collectors items now) and both are connected without a glitch.
One last catch, be careful with the Zimbra default mobile policy. Remote wipe works extremely well if you enter four incorrect your pin codes.
After all I am pretty pleased the way it’s working.
My specs:
- VirtualBox 4.1 on Debian 5 (Lenny)
- ZCA 6.0.13 (Installed) upgraded to 6.0.14 (6.0.15 is on it’s way to be released shortly)
- HP TouchPad 3.0.5
- HP Pre3 2.2.4
This week I decided it was time to upgrade my home server. The main reasons, lack of 64-bit support and virtualization technology (VT-x) in my existing setup. The performance gain was also a nice side effect. I have come up with the following new components:
- Intel DQ67EPB3, S1155, Q67, 2xDDR3, mITX
- Intel Core i3-2120T, 2.60GHz, 3MB, HD2000, S1155
- Kingston ValueRam 8GB(2x4GB) DDR3 1333MHz CL9
The Intel motherboard claims to be energy efficient and the i3 processor has a max thermal design power (TDP) of 35W. I think this is a nice balanced setup to do low-end virtualization with low-power consumption in mind. I might do a power consumption measurement one day.
Once all was installed and the new system booted it appeared networking did not come up in Debian 5 (Lenny).
I had to download and build the driver manually, see the instructions below:
lspci showed: Ethernet controller: Intel Corporation Device 1502 (rev 04)
Look for the “Intel® 82579 Gigabit Ethernet Controller” on the http://downloadcenter.intel.com website.
tar xvzf e1000e-1.9.5.tar.gz
cd e1000e-1.9.5/src
make install
modprobe e1000e
ifconfig eth0 up
UPDATE: The network driver works out of the box with Debian Squeeze.
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