centos 7 에 xfs로 디스크 추가하기

참고
[CenOS7] 새로운 하드디스크 추가하기.
https://zero-gravity.tistory.com/297



# fdisk -l

Disk /dev/vda: 53.7 GB, 53687091200 bytes, 104857600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000ce797

   Device Boot      Start         End      Blocks   Id  System
/dev/vda1   *        2048      976895      487424   83  Linux
/dev/vda2          976896     2928639      975872   82  Linux swap / Solaris
/dev/vda3         2928640   104857566    50964463+  83  Linux

Disk /dev/vdb: 214.7 GB, 214748364800 bytes, 419430400 sectors   <-----------
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

# fdisk /dev/vdb
Welcome to fdisk (util-linux 2.23.2).

Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0x7baf295d.

Command (m for help): n    <----
Partition type:
   p   primary (0 primary, 0 extended, 4 free)
   e   extended
Select (default p): p  <----
Partition number (1-4, default 1): 1  <----
First sector (2048-419430399, default 2048):  <----
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-419430399, default 419430399):  <----
Using default value 419430399
Partition 1 of type Linux and of size 200 GiB is set

Command (m for help): w  <----
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.


# fdisk -l

Disk /dev/vda: 53.7 GB, 53687091200 bytes, 104857600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000ce797

   Device Boot      Start         End      Blocks   Id  System
/dev/vda1   *        2048      976895      487424   83  Linux
/dev/vda2          976896     2928639      975872   82  Linux swap / Solaris
/dev/vda3         2928640   104857566    50964463+  83  Linux

Disk /dev/vdb: 214.7 GB, 214748364800 bytes, 419430400 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x7baf295d

   Device Boot      Start         End      Blocks   Id  System
/dev/vdb1            2048   419430399   209714176   83  Linux    <------------


# mkfs -t xfs /dev/vdb1
centos 7부터 기본 지원되는 파일시스템 xfs의 장단점 https://idchowto.com/?p=11593



# mount -t xfs /dev/vdb1 /home

# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/vda3        49G  1.3G   48G   3% /
devtmpfs        1.9G     0  1.9G   0% /dev
tmpfs           1.9G     0  1.9G   0% /dev/shm
tmpfs           1.9G   17M  1.9G   1% /run
tmpfs           1.9G     0  1.9G   0% /sys/fs/cgroup
/dev/vda1       473M  176M  298M  38% /boot
tmpfs           379M     0  379M   0% /run/user/0
/dev/vdb1       200G   33M  200G   1% /home

# blkid
/dev/vda1: UUID="19988f0b-3cb1-428f-9df2-eaa432f7b252" TYPE="xfs"
/dev/vda2: UUID="3390f939-74c7-4de8-9f99-4e476db28672" TYPE="swap"
/dev/vda3: UUID="71c352fc-333d-4a39-a299-0c9f8da5c7b2" TYPE="xfs"
/dev/vdb1: UUID="52ea8acf-2160-4781-a547-70237c51e501" TYPE="xfs"  <-------


# vi /etc/fstab
UUID=71c352fc-333d-4a39-a299-0c9f8da5c7b2 /                       xfs     defaults        0 0
UUID=19988f0b-3cb1-428f-9df2-eaa432f7b252 /boot                   xfs     defaults        0 0
UUID=3390f939-74c7-4de8-9f99-4e476db28672 swap                    swap    defaults        0 0
UUID=52ea8acf-2160-4781-a547-70237c51e501 /home                   xfs     defaults        0 0  <------ 추가


재부팅 후
# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/vda3        49G  1.3G   48G   3% /
devtmpfs        1.9G     0  1.9G   0% /dev
tmpfs           1.9G     0  1.9G   0% /dev/shm
tmpfs           1.9G   17M  1.9G   1% /run
tmpfs           1.9G     0  1.9G   0% /sys/fs/cgroup
/dev/vdb1       200G   33M  200G   1% /home
/dev/vda1       473M  165M  308M  35% /boot
tmpfs           379M     0  379M   0% /run/user/0

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