[Ubuntu] swap 파티션 생성

(Ubuntu) swap 파티션 생성

디스크 추가

• 디스크 추가 확인 /dev/vdc

  # fdisk -l
  
  Disk /dev/vdc: 1 GiB, 1073741824 bytes, 2097152 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
  

• 파티션 생성

  root@sung-ubuntu02:~# fdisk /dev/vdc
  Welcome to fdisk (util-linux 2.34).
  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.
  Created a new DOS disklabel with disk identifier 0x3fcbbd50.
  
  Command (m for help): n
  Partition type
     p   primary (0 primary, 0 extended, 4 free)
     e   extended (container for logical partitions)
  Select (default p): p
  Partition number (1-4, default 1):
  First sector (2048-2097151, default 2048):
  Last sector, +/-sectors or +/-size{K,M,G,T,P} (2048-2097151, default 2097151):
  
  Created a new partition 1 of type 'Linux' and of size 1023 MiB.
  
  

#포맷변경
Command (m for help): t
Selected partition 1
Hex code (type L to list all codes): L

0 Empty 24 NEC DOS 81 Minix / old Lin bf Solaris
1 FAT12 27 Hidden NTFS Win 82 Linux swap / So c1 DRDOS/sec (FAT-
2 XENIX root 39 Plan 9 83 Linux c4 DRDOS/sec (FAT-
3 XENIX usr 3c PartitionMagic 84 OS/2 hidden or c6 DRDOS/sec (FAT-
4 FAT16 <32M 40 Venix 80286 85 Linux extended c7 Syrinx
5 Extended 41 PPC PReP Boot 86 NTFS volume set da Non-FS data
6 FAT16 42 SFS 87 NTFS volume set db CP/M / CTOS / .
7 HPFS/NTFS/exFAT 4d QNX4.x 88 Linux plaintext de Dell Utility
8 AIX 4e QNX4.x 2nd part 8e Linux LVM df BootIt
9 AIX bootable 4f QNX4.x 3rd part 93 Amoeba e1 DOS access
a OS/2 Boot Manag 50 OnTrack DM 94 Amoeba BBT e3 DOS R/O
b W95 FAT32 51 OnTrack DM6 Aux 9f BSD/OS e4 SpeedStor
c W95 FAT32 (LBA) 52 CP/M a0 IBM Thinkpad hi ea Rufus alignment
e W95 FAT16 (LBA) 53 OnTrack DM6 Aux a5 FreeBSD eb BeOS fs
f W95 Ext'd (LBA) 54 OnTrackDM6 a6 OpenBSD ee GPT
10 OPUS 55 EZ-Drive a7 NeXTSTEP ef EFI (FAT-12/16/
11 Hidden FAT12 56 Golden Bow a8 Darwin UFS f0 Linux/PA-RISC b
12 Compaq diagnost 5c Priam Edisk a9 NetBSD f1 SpeedStor
14 Hidden FAT16 <3 61 SpeedStor ab Darwin boot f4 SpeedStor
16 Hidden FAT16 63 GNU HURD or Sys af HFS / HFS+ f2 DOS secondary
17 Hidden HPFS/NTF 64 Novell Netware b7 BSDI fs fb VMware VMFS
18 AST SmartSleep 65 Novell Netware b8 BSDI swap fc VMware VMKCORE
1b Hidden W95 FAT3 70 DiskSecure Mult bb Boot Wizard hid fd Linux raid auto
1c Hidden W95 FAT3 75 PC/IX bc Acronis FAT32 L fe LANstep
1e Hidden W95 FAT1 80 Old Minix be Solaris boot ff BBT
Hex code (type L to list all codes): 82
Changed type of partition 'Linux' to 'Linux swap / Solaris'.

Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
Syncing disks.

root@sung-ubuntu02:~#

- 포맷 & UUID 확인

  ```bash
  root@sung-ubuntu02:~# fdisk -l
  ...
  Disk /dev/vdc: 1 GiB, 1073741824 bytes, 2097152 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
  Disklabel type: dos
  Disk identifier: 0x3fcbbd50

  Device     Boot Start     End Sectors  Size Id Type
  /dev/vdc1        2048 2097151 2095104 1023M 82 Linux swap / Solaris

  root@sung-ubuntu02:~# mkswap /dev/vdc1
  Setting up swapspace version 1, size = 1023 MiB (1072689152 bytes)
  no label, UUID=066cafe3-114c-432a-b038-8a7cba878267

마운트

• /etc/fstab 등록

  UUID=066cafe3-114c-432a-b038-8a7cba878267 none swap sw 0 0 

• swapon

  root@sung-ubuntu02:~# swapon -a
  root@sung-ubuntu02:~# free -m
                total        used        free      shared  buff/cache   available
  Mem:           7957         572        1581           1        5802        7120
  Swap:          1022           0        1022