Разделы HDD

 

sudo fdisk -l # посмотреть все HDD на станции
sudo fdisk /dev/sdb # редактировать новый HDD, обозначенный как sdb.

Основные команды Fdisk:

m - вывести список команд

p - вывести параметры HDD (проверить HDD).

Linux Partition type= 83.

Разметка файловой системы

sudo mkswap /dev/sdb2 # разметить раздел как swap
sudo swapon /dev/sdb2 # активировать swap

swapon -s # list swap partitions

sudo mkfs -t ext2 /dev/sdb1 # make file system of type in sdb1
sudo mkfs -t ext3 /dev/sdb1 # make journaling file system
sudo mkfs -t xfs /dev/sdb1  -f # make (force) XFS file system
sudo mkfs -t reiserfs  /dev/sdb1 # make reiserFS file system

sudo mkfs.ext4 /dev/mapper/vg_nqt5-DataVol # CentOS LVM Logical Volume Partitioning 

# To make a Windows file system (vFAT), ID should be changed from 83 to 32 type partition
sudo mkfs -t vfat /dev/sdb1 # make MSDOS/WIN file system

File system integrity

df -hT # Check free space, show result in megabytes/gigs and display in table

NFS Server

Установить компоненты:

yum install nfs-utils nfs-utils-lib

Автостарт служб:

chkconfig --levels 235 nfs on 
/etc/init.d/nfs start

Possible Error

Starting NFS mountd:                                       [FAILED]

Starting NFS daemon: rpc.nfsd: writing fd to kernel failed: errno 111 (Connection refused)

rpc.nfsd: unable to set any sockets for nfsd     [FAILED]

Resolution: check & start rpcbind service

$ service rpcbind status

$ service rpcbind start

$ chkconfig rpcbind on

Создать права на папку NFS:

mkdir /var/nfs
chown 65534:65534 /var/nfs
chmod 755 /var/nfs

Настройка папок на экспорт:

sudo vim /etc/exports
/home           192.168.0.101(rw,sync,no_root_squash,no_subtree_check)
/var/nfs        192.168.*.*(rw,sync,no_subtree_check)

Run sudo exportfs -a to make changes.


Диагностика: showmount -e

mount fails with

clnt_create: RPC: Unknown host

Diagnostic:

If we do a more thorough diagnostic, this is the issue

# showmount -e 

clnt_create: RPC: Unknown host

Change the /etc/hosts file from this:

Change from

::1          localhost localhost.localdomain localhost6 localhost6.localdomain6

To

::1          machine_hostname localhost localhost.localdomain localhost6 localhost6.localdomain6

Restart the NFS service and check on the showmount -e localhost and showmount -e and attempt to mount the share.

# service nfs restart 

# showmount -e localhost 

# showmount -e

 


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