linux/common/storage

How to mount NTFS partition in RHEL-6

 The Linux kernel added a new kernel parameter called swappiness to let administrators tweak the way Linux swaps. It is a number from 0 to 100.In essence, higher values lead to more pages being swapped, and lower values lead to more applications being kept in memory, even if they are idle.The swappiness parameter controls the tendency of the kernel to move processes out of physical memory and onto the swap disk.

How to configure iSCSI

How to configure iSCSI initiator

]# iscsiadm -m discovery -t st -p 192.168.0.254
( m=mode, t= type, st=send targets, p=Portal )

]# iscsiadm -m node -T iqn.2010-09.com.example:rdisk.demo -p 192.168.0.254 -l
( T= target name, l=loging )

]# tailf /var/log/message ( to find device type eg. /dev/sda)

]# fdisk /dev/sda (make it primary or extended asper requirement )

]# mkfs.ext4 /dev/sda1

]# mkdir /storage

]# vim /etc/fstab

UUID=xxxxxx /storage ext4 _netdev 0 0

]# mount -a

How to convert ext3 to ext4

Now ext4 is default file system available for Linux kernel. Ext4 provides some additional benefits and perforce over ext3 file system. You can easily convert ext3 to ext4 file system. In this post you will learn how to convert ext3 to ext4 file system.

How to get list of Partition and Block devices

Following are the command line utility which can display disk partitions and block devices.

How to create software RAID

RAID stands for  Redundant Arrays of Inexpensive Disks, In a RAID configuration, multiple disks are combined together to improve performance, reliability, and data redundancy.RAID can be handled either by the operating system software called SOFTWARE RAID or it may be implemented via a purpose built RAID disk controller card is known as HARDWARE RAID. Following article explains, how to configure the software RAID.

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