How to add a hard disk to linux

How to add a hard disk overview to linux: Add a 15 GB hard disk 170 fdisk-l to list all hard disks 171 sudo pvcreate/dev/sdb ---------- sdb is the newly added physical disk, prepare for lvm to use 172 sudo vgcreate 12c/dev/sdb ----------------- to create a volume group named 12c 174 sudo lvcreate-l 100% FREE-n 12clv 12c volume to create a logical volume named 12lv 175 sudo mkfs -t ext4/dev/12c/12clv ------------------------ create a file system 176 sudo mkdir/12c -------------------------- create a mount point 177 sudo vi/etc/fs Tab ------------------------- set the mount option. mount point 178 sudo mount/12c ------------------------ mount the file system. For example: [root @ localhost ~] # Fdisk-lDisk/dev/sda: 14.3 GB, 14343061504 bytes255 heads, 63 sectors/track, 1743 cylindersUnits = cylinders of 16065*512 = 8225280 bytes Device Boot Start End Blocks Id System/dev/sda1 * 1 13 104391 83 Linux/dev/sda2 14 1743 13896225 8e Linux LVMDisk/dev /sdb: 16.1 GB, 16106127360 bytes255 heads, 63 sectors/track, 1958 cylindersUnits = cylinders of 16065*512 = 8225280 bytesDisk/dev/sdb doe Sn't contain a valid partition tableDisk/dev/dm-0: 13.1 GB, 13153337344 bytes255 heads, 63 sectors/track, 1599 cylindersUnits = cylinders of 16065*512 = 8225280 bytesDisk/dev/dm-0 doesn't contain a valid partition tableDisk/dev/dm-1: 1073 MB, 1073741824 bytes255 heads, 63 sectors/track, 130 cylindersUnits = cylinders of 16065*512 = 8225280 bytesDisk/dev/dm-1 doesn't contain a valid partiti On table [root @ localhost ~] # Sudo pvcreate/dev/sdb Writing physical volume data to disk "/dev/sdb" Physical volume "/dev/sdb" successfully created [root @ localhost ~] # Sudo vgcreate 12c/dev/sdb Volume group "12c" successfully created [root @ localhost ~] # Sudo lvcreate-l 100% FREE-n 12clv Path required for Logical Volume "12clv" Please provide a volume group name Run 'lvcreate -- help' for more information. [root @ localhost ~] # Sudo lvcreate-l 100% FREE-n 12clv 12c Logical volume "12clv" created [root @ localhost ~] # Sudo mkfs-t ext4/dev/12c/12clvmke4fs 1.41.12 (17-May-2010) Filesystem label = OS type: LinuxBlock size = 4096 (log = 2) fragment size = 4096 (log = 2) Stride = 0 blocks, Stripe width = 0 blocks983040 inodes, 3931136 blocks196556 blocks (5.00%) reserved for the super userFirst data block = 0 Maximum filesystem blocks = 4026531840120 block groups32768 blocks per group, 32768 fragments per group8192 inodes per groupSup Erblock backups stored on blocks: 32768,983 04, 163840,229 376, 294912,819 200, 884736,160 5632, 2654208 Writing inode tables: done Creating journal (32768 blocks): doneWriting superblocks and filesystem accounting information: doneThis filesystem will be automatically checked every 22 mounts or180 days, whichever comes first. use tune4fs-c or-I to override. [root @ localhost ~] # Sudo mkdir/12c [root @ localhost ~] # Sudo vi/etc/fstab/dev/VolGroup00/LogVol00/ext3 defaults 1 1 LABEL =/boot ext3 defaults 1 2 tmpfs/dev/shm tmpfs defaults 0 0 devpts/dev /pts devpts gid = 5, mode = 620 0 0 sysfs/sys sysfs defaults 0 0 proc/proc defaults 0 0/dev/VolGroup00/LogVol01 swap defaults 0 0/dev/12c/12clv/12c ext4 defaults 0 0 ~~ "/Etc/fstab" 8L, 610C written [root @ localhost ~] # Sudo mount/12c [root @ localhost ~] # Cd/[root @ localhost/] # lltotal 166drwxr-xr-x 3 root 4096 Jun 26 then 3 root 4096 Jun 20 04 bindrwxr-xr-x 4 root 1024 Jun 19 bootdrwxr -xr-x 13 root 3900 Jun 26 devdrwxr-xr-x 98 root 12288 Jun 26 etcdrwxr-xr-x 4 root 4096 Jun 26 homedrwxr-xr-x 11 root 4096 Jun 20 libdrwxr-xr-x 9 root 4096 Jun 20 04 lib64drwx ------ 2 root 16384 Jun 19 lost + founddrwxr-xr-x 3 root 4096 Jun 26 mediadrwxr-xr-x 2 root 0 Jun 26 miscdrwxr-xr-x 2 root 4096 Feb 16 2010 mntdrwxr-xr-x 2 root 0 Jun 26 netdrwxr- xr-x 2 root 4096 Feb 16 2010 optdr-xr-x 123 root 0 Jun 26 procdrwxr-x --- 15 root 4096 Jun 26 rootdrwxr-xr-x 2 root 12288 Jun 20 sbindrwxr-xr-x 2 root 4096 Jun 19 selinuxdrwxr-xr-x 2 root 4096 Feb 16 2010 srvdrwxr-xr-x 13 root 0 jun 26 sysdrwxr-xr-x 3 root 4096 Jun 19 tftpbootdrwxrwxrwt 8 root 4096 Jun 26 19 tmpdrwxr-xr-x 15 root 4096 Jun 19 usrdrwxr-xr-x 21 root 4096 Jun 19 var [root @ localhost/] # df-hFilesystem Size Used Avail Use % Mounted on/dev/mapper/VolGroup00-LogVol00 12G 8.7G 2.6G 78% // dev/sda1 99 M 24 M 71 M 25%/boottmpfs 244 M 0 244 M 0%/dev/shm/dev/mapper/12c-12clv 15G 166 M 14G 2%/12c [root @ localhost/] # cd/12c [root @ localhost 12c] # df-hFilesystem Size Used Avail Use % Mounted on/dev/mapper/VolGroup00-LogVol00 12G 8.7G 2.6G 78%/dev /sda1 99 M 24 M 71 M 25%/boottmpfs 244 M 0 244 M 0%/dev/shm/dev/mapper/12c-12clv 15G 166 M 14G 2%/12c [root @ localhost 12c] # a hard disk is successfully added here, create a File System