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[ubuntu] No swap file on Ubuntu 14.04 fresh encrypted install

First of all, I want to say that I know similar questions have been posted and I'm sorry, but I'm in a period of recovery from an illness and my brain isn't working as well as usual. I just could not piece together the solution from other posts this time.

Ubuntu 14.04 install. Noticed performance lag when using several intense applications. I have 6gb of ram. Checked and there is no swapfile and I obviously need one as my computer will freeze up for a while if I'm using too much ram.

Thanks in advance for any step-by-step help anyone is willing to offer. I am using Linux exclusively and would prefer not to bork it as I don't currently have the energy for a fresh install in my condition. I have included some information that may be helpful.

Code:

sudo swapon -a

swapon: /dev/mapper/ubuntu--vg-swap_1: read swap header failed: Invalid argument
swapon: /dev/mapper/cryptswap1: stat failed: No such file or directory
Cryptab:

Code:

cat /etc/crypttab
sda3_crypt UUID=8992d06e-2c19-467e-af2d-1f49e7c59ce9 none luks,discard
cryptswap1 UUID=2aec9a27-8510-4c15-9ceb-a8b2927847bd /dev/urandom swap,cipher=aes-cbc-essiv:sha256
Fstab:

Code:

cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
/dev/mapper/ubuntu--vg-root /               ext4    errors=remount-ro 0       1
# /boot was on /dev/sda2 during installation
UUID=f0fc8d75-f0b6-4517-8278-7eeb36c0a42c /boot           ext2    defaults        0       2
# /boot/efi was on /dev/sda1 during installation
UUID=0A3C-FD40  /boot/efi       vfat    defaults        0       1
/dev/mapper/ubuntu--vg-swap_1 none            swap    sw              0       0
/dev/mapper/cryptswap1 none swap sw 0 0
Partition list:

Code:

sudo fdisk -l
WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.




Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000


   Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1  1953525167   976762583+  ee  GPT
Partition 1 does not start on physical sector boundary.


Disk /dev/sdb: 500.1 GB, 500107861504 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773167 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 identifier: 0x08622858


   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1            2048   976766975   488382464    7  HPFS/NTFS/exFAT


Disk /dev/mapper/sda3_crypt: 999.4 GB, 999408271360 bytes
255 heads, 63 sectors/track, 121504 cylinders, total 1951969280 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/sda3_crypt doesn't contain a valid partition table


Disk /dev/mapper/ubuntu--vg-root: 993.1 GB, 993060192256 bytes
255 heads, 63 sectors/track, 120732 cylinders, total 1939570688 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/ubuntu--vg-root doesn't contain a valid partition table


Disk /dev/mapper/ubuntu--vg-swap_1: 6337 MB, 6337593344 bytes
255 heads, 63 sectors/track, 770 cylinders, total 12378112 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/ubuntu--vg-swap_1 doesn't contain a valid partition table

برچسب: نویسنده: استخدام کار تاريخ: پنجشنبه 12 فروردين 1395 ساعت: 12:01

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