The Linux Pit Stop

Linux is such a great operating system that it offers you lots of flexibility over removable media. You can manage them in many ways possible. In order for such media to work, you need to mount them. A system Administrator with minimal experience can mount a disk in Linux easily. Yesterday, I got an error, Device I was going to mount was thorwing the following error when run mount command:

mount: /dev/sda3 already mounted or /tmp/mnt busy

I have gone over many forums and tried to find out the solution for this but non of them worked. Then i run fdisk -l command and discovered that the partition I am trying to mount is Linux LVM, not NTFS or EXT3. Here are the steps to successfully mount LVM disk in Linux.

First of all, determine the volume group containing the physical volume /dev/sda3. for this the following command will work.

pvs

Here is output of this command:

/dev/sda3 VolGroup00 lvm2 a-   67.94G 56.00M

Now, let’s find the the logical volume VolGroup00.

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Symfony is the collection of classes written in PHP and it is the most commonly used PHP Framework. Here are the steps to install it in Linux ( The following instructions should work on all Linux distros, I followed them on Fedora Core).

First of all make sure that Pear is already installed, open the terminal and download the go-pear file by running the following command:

wget http://pear.php.net/go-pear

Once the go-pear is downloaded, run the following command to install Pear to your system.

php go-pear

Then follow the onscreen instructions and you are done with the Pear installation in some time. Once the Pear installation is completed, then it is the piece of cake to install symfony. ( Sometimes symfony may also require the ‘dom’ extension to be loaded).

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