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Improving filesystem read performance using “noatime”
Linux records information about when files was last accessed. There is a cost associated with recording the last access time. The ext3 file system of Linux has an attribute that allows the super-user to mark individual filesystem to ignore recording of last access time. This may lead to […] How to check/repair (fsck) filesystem after crash or power-outage
At some point your system will crash and you need to perform a manual repair of your file system. A typical situation would be power loss while you are working on the system. You reboot and the system stops and indicates you must perform a […] LVM First LVM Setup 1) fdisk /dev/sdb WARNING: DOS-compatible mode is deprecated. It’s strongly recommended to switch off the mode (command ‘c’) and change display units to sectors (command ‘u’). Command (m for help): n Command action e extended p primary partition (1-4) p Partition number (1-4): 1 First cylinder (1-13054, default 1): Using default […] Creation deletion of Logical Partition and extended 1) List the Partition Table [root@localhost ~]# fdisk -l 2) Create Extended Partition on the New disk /dev/sdb fdisk /dev/sdb [root@localhost ~]# fdisk /dev/sdb Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel Building a new DOS disklabel with disk […] Hard Disk Specs details on Linux Open the terminal and type the command: # hdparm -I /dev/sda OR $ sudo hdparm -I /dev/sda [root@localhost thermal_zone]# hdparm -I /dev/sda /dev/sda: ATA device, with non-removable media Model Number: VBOX HARDDISK Serial Number: VB81a9afe9-f59293fa Firmware Revision: 1.0 Standards: Used: ATA/ATAPI-6 published, ANSI INCITS 361-2002 Supported: 6 5 […] |
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